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Kair Heat Recovery Extractor Fan – 12VAC SELV – Humidistat
Original price was: £503.08.£323.94Current price is: £323.94.
- Solves Mould, Damp and Condensation Problems
- Save up to 86% of your heat, you will soon get lower heating bills
- Perfect for your bedroom because it includes a night sensor
- Quiet and powerful -Trickle 19m3/h / Boost 38m3/h Average daily airflow 547m3
- This unit is perfectly suited to your needs as it automatically controls the humidity of your room for you, so you can relax knowing that it will take care of everything for you.
- 5 Year Warranty
Found it cheaper? we will match or beat that price for you wherever possible. See Details
You may return an item within 60 days for a full refund. Returns Details | Delivery Details
Rated Excellent by our customers, See Reviews
Need help or have a query? You can fill in our Contact Form or call us on 020 8463 9696
The Best Solution for a Condensation and Mould Problem in a Single Room
Often copied – never bettered – look out for inferior copies… This unit eclipses the imitators. Solving Mould, Damp and Condensation Problems The Kair KHRV150/12RH Single Room Heat Recovery Ventilator is perfect for you if you are looking to solve a damp problem in one of your rooms. Such as your kitchen, bathroom, utility room, living room, lavatory, washroom, conservatories, office and bedroom. Continuous ventilation in your home This unit is perfectly suited to your needs as it automatically controls the humidity of your room for you, so you can relax knowing that it will take care of everything for you. The unit also offers you continuous trickle ventilation, so it will constantly clean and purify the air you breathe. Continuous ventilation is the key in keeping your home mould free. Free extra set of filters Register your product within 14 days of purchase and you will receive an extra set of filters for FREE! Reducing heating bills The unit is highly energy efficient so it will help you save money on your heating bill. Up to 86% heat recovered from extracted air, means even in cold winter weather the incoming clean air will remain at almost the same room temperature. Clean air for You and Your family The unit is 100% completely safe for you to put in your bedroom or your child’s bedroom since it has a very low voltage, keeping you and your family safe. By providing adequate ventilation the unit maintains the recommended humidity levels, preventing harmful bacteria being breathed in. Installation of the K-HRV150 Unit This unit can be installed using a 152mm core drill. Uses Phillips or Tamperproof Screws – Supplied in box with installation instructions. Required wall thicknesses is from 229mm (9inch) to 356mm (14inch); this is the standard for British homes. For full installation instructions and other important documentation, please have a look at the Related files section below.<!–Invest in the K-HRV150 Unit and never worry about mould, damp, condensation, and associated health risks
Here are some more ways in which the unit can help you:- Save up to 86% of your heat, you will soon get lower heating bills.
- Quietest unit available on the market.
- Easy for you to install.
- Perfect for your bedroom because it includes a night sensor.
- Unlike other manufactures provides you with balanced air-flow, so safe for any of your rooms even ones with boilers in.
- Can help you achieve Carbon Neutral and Carbon Saving applications
- Landlords – Comes complete with tamper proof screws, your tenants cannot fiddle around with it, so you can enjoy peace of mind.
- Trickle 19m3/h / Boost 38m3/h Average daily airflow 547m3
- Supplied with a choice of both standard cross head or tamperproof screws for ease of install or piece of mind.
- Tamperproof bit or driver required to install or maintain using the included tamperproof Screws – See below.
- IP Ratings: IP57 SELV Heat exchanger / wall unit
- IP Ratings: IP30 SELV Transformer
- Heat exchanger / wall unit: IP57 Aluminium heat exchanger combined with 2 low voltage motors in combined assembly for complete safety especially in the splash zones of bathrooms and showers
- Transformer Input: 220-240V 50Hz Output: (12V AC) is mounted remotely outside of Zones 1 and 2.
- Meets All IEE, SELV and Building Regulations.
- Suitable for wall thicknesses from 229mm (9inch) to 356mm (14inch)
- 152mm core drill installation – no need for external access (High rise application)
- Extension kit is available for walls up to 1 metre thickness (K-HRV150-EXT)
- Part of our Single room SRHRV range
- Approximate coverage 17.5m²
Guaranteed solution in eliminating black mould, condensation and damp
5 Year Warranty.| Model | K-HRV150/12RH |
|---|---|
| QS code | QS2838 |
| Barcode | 5060272540005 |
| Product type | Heat Recovery - Single Room |
| Product group | Ventilation Fan |
| Round system (mm) | 150 |
| Weight (kg) | 4.7 |
| SELV | Yes |
| Pullcord | Yes |
| Humidistat | Yes |
| Power max watts | 46 |
| Power min watts | 9 |
| Decibel rating db min | 21 |
| Decibel rating db max | 45 |
| Airflow performance ls low | 5.2 |
| Airflow performance ls high | 10.5 |
| Airflow performance mh low | 19 |
| Airflow performance mh high | 38 |
| Diameter mm | 152 |
| Packaged height (mm) | 220 |
| Packaged length (mm) | 545 |
| Packaged width (mm) | 345 |
| Packaged weight (kg) | 4.7 |
25 reviews for Kair Heat Recovery Extractor Fan – 12VAC SELV – Humidistat
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Free Delivery Over £100
For items in stock. Excludes timed and non UK Mainland deliveries.
Cut off time 12:00 (noon)
Orders placed after midday will be shipped the following working day.
K-HRV150 Data Sheet
K-HRV150 Diagnosis and Maintenance
K-HRV150 Installation Instructions
K-HRV150 User Guide
Questions and answers of the customers
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Hello, would this be suitable for a 40m3 kitchen please? Dimensions are 5.3x3.1x2.4 (lwh). The extractor would be towards the end of the room (extracting from one end of the 5.3m length). Thank you
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QHello, would this be suitable for a 40m3 kitchen please? Dimensions are 5.3x3.1x2.4 (lwh). The extractor would be towards the end of the room (extracting from one end of the 5.3m length). Thank youanswer nowA
The airflow capacity of the Kair Heat Recovery Extractor Fan is typically between 40-60 m³/h for single-room units. This is significantly below the required airflow rate for a 40 m³ kitchen.
the Kair fan is not suitable for a kitchen of this size because it cannot provide the required ventilation rates.
Consider a kitchen-specific extractor fan or a centralized heat recovery ventilation system with a capacity of at least 400 m³/h.or a 60 L/s fan
you could try this nuaire extractor on our website i-sells.co.uk you can give me a call on 0208 463 9518
Nuaire Cyfan Bathroom/Utility/Kitchen All-in-One Extractor
Does this unit have a continuously run function? What is the range of humidity sensor please? Would it suit 6m by 6m open plan kitchen/family room?
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QDoes this unit have a continuously run function? What is the range of humidity sensor please? Would it suit 6m by 6m open plan kitchen/family room?answer nowA Good afternoon Natalia. All Heat recovery units run continuously. This unit will run on a trickle speed and boost via humidity or by pulling the pull cord. The threshold for the humidity sensor is between 20-90% but we recommend setting it between 50-55%.It will be suitable for the living space, but the kitchen will need to have a separate extractor fan ducted to the outside. Kind regardsMarc
Hello,
We suffer from lots of condensation and black mould spots in our bedroom each winter. These grow around the window frame most densely, as well as on curtains and blinds, the exterior bedroom walls (of which there are two) and also any furniture positioned in the coldest areas of the room.
Previously I was advised to open a window to allow the damp air to escape, but this doesnt work and is also very cold in winter months. I have tried to remove with damp spray each week to try and limit the problem but this is just a quick fix.
This year we have a new baby (currently 3 months old) so need a solution and am hoping the Kair Heat Recover Extractor Fan would work. Im not sure if this is the right product as I cant see anything about mould in the questions above, just condensation.
Many thanks in advance for your advice.
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QHello, We suffer from lots of condensation and black mould spots in our bedroom each winter. These grow around the window frame most densely, as well as on curtains and blinds, the exterior bedroom walls (of which there are two) and also any furniture positioned in the coldest areas of the room. Previously I was advised to open a window to allow the damp air to escape, but this doesnt work and is also very cold in winter months. I have tried to remove with damp spray each week to try and limit the problem but this is just a quick fix. This year we have a new baby (currently 3 months old) so need a solution and am hoping the ...... Read moreanswer nowA Hi Lauren. Give me a call on 020 8463 9514. I do go to lunch between 1.30 and 2.30, but am available until 5.30, and from 8 am tomorrow morning.Kind regards, Marc
We need to improve ventilation and control humidity in the kitchen. The only feasible access is through the wall to the adjacent garage. An extension of about 1m would then allow access through the garage wall to the outside, but I understand it is not possible to duct the kair unit. What would you suggest
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QWe need to improve ventilation and control humidity in the kitchen. The only feasible access is through the wall to the adjacent garage. An extension of about 1m would then allow access through the garage wall to the outside, but I understand it is not possible to duct the kair unit. What would you suggestanswer nowA Good morning Mike.You could look at something like the Airflow QT150HT extractor fan. These can extract over long duct runs, and it comes with an inbuilt humidity sensor.We currently have 1 in stock.Kind regards, Marc
We had the fan fitted recently but the night sensor was not activated. Could we activate it ourselves or do we need to get an electrician to activate it? In either case, please tell us how to do it as I cant see anything about it in the instruction booklet. Thank you.
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QWe had the fan fitted recently but the night sensor was not activated. Could we activate it ourselves or do we need to get an electrician to activate it? In either case, please tell us how to do it as I cant see anything about it in the instruction booklet. Thank you.answer nowA Good Morning JanetThank you for your question. A Light Level Sensor is included to prevent the fan from switching automatically to boost at night time.This is a useful feature particularly if the Heat Recovery Ventilator is installed in a bedroom or bed-sitaccommodation, ensuring noise is kept to a minimum.The sensor is factory set in the OFF position as this is preferred for most installations. This meansthat the automatic boost feature will operate if the humidity rises during the hours of darkness. Toactivate the light sensing feature, (boost inhibited during darkness) turn the adjuster fullyanti-clockwise, shown on page 2.This should be an approximate setting for most installations depending on the location of the remotetransformer/humidity assembly in the room.Fine-tuning may be required for precise operation, especially in rooms with low energy light bulbs:- Clockwise allows boost to operate during darkness- Anti-clockwise prevents boost operating during darknessA simple test for the correct setting is to trigger the boost feature via the humidity sensor in adarkened room. When switching the light on or off, the boost speed should cut in and out accordingly. Please come back to me if you require any further helpKind RegardsAnita
Hi, we have a small 2 bedroom terrace with upstairs bedroom. We currently experience high levels of moisture from the bathroom, adults and child sleeping upstairs and kitchen cooking and clothes drying downstairs. Is there a way I can understand the right number of units as really keen to purchase, but want to right-size the requirement. At the moment, I think I would like one unit in the kitchen downstairs, and one or possibly two upstairs. Im uncertain about the upstairs as the house is small, hence the question. Once weve come up with the right number of units, it would also be great to see if you have any recommended suppliers in the East of England? Many thanks for any help
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QHi, we have a small 2 bedroom terrace with upstairs bedroom. We currently experience high levels of moisture from the bathroom, adults and child sleeping upstairs and kitchen cooking and clothes drying downstairs. Is there a way I can understand the right number of units as really keen to purchase, but want to right-size the requirement. At the moment, I think I would like one unit in the kitchen downstairs, and one or possibly two upstairs. Im uncertain about the upstairs as the house is small, hence the question. Once weve come up with the right number of units, it would also be great to see if you have any recommended suppliers i...... Read moreanswer nowA Hello JamesThank you for your enquiry. Please give me a call on 0208 463 9683 and I will be happy to talk through your requirementsKind ReagrdsAnita
Hi there, is there an adaptor for using this in a single skin wall (approx 215mm + plaster)? I.e. something to secure the overlap of the 345mm shaft...
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QHi there, is there an adaptor for using this in a single skin wall (approx 215mm + plaster)? I.e. something to secure the overlap of the 345mm shaft...answer nowA Hi Ed, and thanks for your question.Sadly there is no adaptor, as these units are really only suitable for wall thickness between 229mm and 356mm, or up to 1m with the extension.If your wall isnt quite thick enough, you may need to create a box section on the inside, being careful not to affect the airflow of the unit.Kind regards, Marc
Are the controls manual and is there an off switch?
Thanks.
Ruth
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A Hello RuthThank you for your enquiry. The pin wheel to set the unit is on the fan and the pullcord if the fan needed to be boosted is on the transformer. This fan is designed to run continuous however if you have windows open in the summer then you can turn the unit off. If you have any further questions please do not hesitate to contact us.Kind RegardsAnita
We had one of these heat recovery extractor fans fitted in our conservatory a few weeks ago in order to cure the condensation problem that we were having . I must say that although the unit was on boost for a couple of weeks it has sorted out the problem. The only thing is even with the radiator on the unit seems to be blowing out cool air , I thought that it should circulate the warm air in the room. The unit is on the opposite wall to the radiator if this makes any difference. I look forward to your early reply.
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QWe had one of these heat recovery extractor fans fitted in our conservatory a few weeks ago in order to cure the condensation problem that we were having . I must say that although the unit was on boost for a couple of weeks it has sorted out the problem. The only thing is even with the radiator on the unit seems to be blowing out cool air , I thought that it should circulate the warm air in the room. The unit is on the opposite wall to the radiator if this makes any difference. I look forward to your early reply.answer nowA Good morning Bill. The incoming air wouldnt necessarily be hot air, as it does rely on the exhaust air warming up the heat exchanger. That in turn should warm the incoming air a little bit and should save quite a bit of heat loss. Its possible the air around the unit on the inside is not warm enough to heat up the heat exchanger enough. This would be more prominent when it is very cold.Kind regards, Marc
What is the noise/decibel level of the product when switched on at the different output levels?
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QWhat is the noise/decibel level of the product when switched on at the different output levels?answer nowA Hello Joseph, Trickle speed 21 decibels (youd hardly notice it unless you put your ear up to it and everything around is quiet) and then 45 decibels on boost speed (which you will hear but in theory its only on that when it needs to boost the air circulation to bring the humidity level back down or if the pullcord is pulled). The trickle and boost are dependent at which level the humidistat dial is set at (ideally between 40-60%, it comes set at around 50-55%) but you can easily adjust this yourself so this will also determine how often the machine goes from trickle to boost itself.Hope this helps, Ingrid
Hi, this would be for a kitchen, so I dont really need SELV. Do you do such a version?
Thanks,
David
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QHi, this would be for a kitchen, so I dont really need SELV. Do you do such a version? Thanks, Davidanswer nowA Good afternoon David. Take a look at part number KAIKSRHRV100-WHKind regards, Marc
Thanks for aswering my question ive opened it up and the fuses are missing can you tell me exactly what fuses they are please
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QThanks for aswering my question ive opened it up and the fuses are missing can you tell me exactly what fuses they are pleaseanswer nowA Hi Don.To the top left of the circuit board you will see two fuse positions, one labelled ‘fast’ and one labelled ‘slow’. The reason for this is toallow adjustment for long cable runs. Make a note of which positionyour fuse is in before replacing and make sure your new fuse goesback in the same place.These units use a 5A quick-blow fuse.You may also want to check the fuse on the fused spur.There is a diagnostic PDF in the download section on out website. If you look up k-hrv150 and click on the HRV unit itself and scholl down a bit, you will see it. Info is on page 2.Kind regards, Marc.
unit not working at the moment are there any fuses that may have blown and can be replaced
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Qunit not working at the moment are there any fuses that may have blown and can be replacedanswer nowA Hi Don. There is 1 or 2 fuses in the transformer itself. It is likely one of those have blown. Please make sure you replace it with the same type and amperage.Kind regards, Marc.
I have been waiting to purchase this item for several months but havent because its not a stock item, I have noticed that it is due in stock on 6/12.21. If I place an order with you now will you debit my account with the full purchase price on the day of purchase or 2months from now when the item is dispatched?
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QI have been waiting to purchase this item for several months but havent because its not a stock item, I have noticed that it is due in stock on 6/12.21. If I place an order with you now will you debit my account with the full purchase price on the day of purchase or 2months from now when the item is dispatched?answer nowA Hi Mark, Thanks for your email.Yes sorry the units have been in high demand and limited supply recently due to component shortages.To secure a unit within the next available batch you would need to pay now rather than when the unit is dispatched.I hope that helps to answer your question.RegardsChris
I would like to install a Single Room Mechanical Ventilation Heat Recovery System in my bathroom, but the only reasonable way of connecting to the outside air is through the roof. Is it possible to do this, rather than going through the wall? Can your heat recovery unit be used with a standard roof vent tile, or is there another way?
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QI would like to install a Single Room Mechanical Ventilation Heat Recovery System in my bathroom, but the only reasonable way of connecting to the outside air is through the roof. Is it possible to do this, rather than going through the wall? Can your heat recovery unit be used with a standard roof vent tile, or is there another way?answer nowA Good afternoon Ben, and thanks for your question. This unit is only deigned to go directly through the WALL. The only units that can be ducted to tile vents are the Blauberg Komfort D105-A and the Vent Axia HR100R / HR100RS. The tile vents will need to be at least 300mm apart, preferably 500mm to prevent the duct runs from contaminating each other.If you want to discuss options, you can call me on 020 8463 9514 Mon-Fri 8am-5.30pm.Kindest regards, Marc.
One of these units has been recommended for installation in a second floor bedroom to cure a condensation/mould problem. The unit looks suitable to cure the problem but I am balking at a quote of £700 to purchase and install one unit. Is this reasonable?
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QOne of these units has been recommended for installation in a second floor bedroom to cure a condensation/mould problem. The unit looks suitable to cure the problem but I am balking at a quote of £700 to purchase and install one unit. Is this reasonable?answer nowA Good morning Ted, and thanks for youre enquiry. Prices will differ from installer to installer, so it might be worth shopping around. The installer will need to do a few post installation checks to make sure the unit is working how it should be. You could buy the unit yourself, and shop around for someone to install it. That may save you some money. We dont have stock available at the moment until the middle of May.Kindest regards,
Hi, old mid terrace house, no cavity walls, small damp cellar under front room only from inadequate ventilation. do you think this fan would be able to ventilate the cellar sufficiently and dry it out ? the air would be expelled a little above floor/ pavement level- but from head height in cellar. i am thinking it would fit in air brick site under the floor.. would i have to block up any other air brick in cellar for best effect ? previous owner had blocked up air bricks [ idiot ] so i need to sort it quickly.i am guessing size wise the kit would fit the wall thickness. many thanks , rob
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QHi, old mid terrace house, no cavity walls, small damp cellar under front room only from inadequate ventilation. do you think this fan would be able to ventilate the cellar sufficiently and dry it out ? the air would be expelled a little above floor/ pavement level- but from head height in cellar. i am thinking it would fit in air brick site under the floor.. would i have to block up any other air brick in cellar for best effect ? previous owner had blocked up air bricks [ idiot ] so i need to sort it quickly.i am guessing size wise the kit would fit the wall thickness. many thanks , robanswer nowA Good morning Robert and thank you for your question. To be honest, there are some variables that need to be considered. Has the cellar been tanked? What size is the cellar? Length x Width x Height. Also, is there any kind of heating down there. For Heat Recovery to be effective, it would require some heat to recover, or you could just be bringing in cold air. If you want to give me a call on 020 8463 9514, I can go through some options with you.Kindest regards, Marc.
Hi. This item is out of stock wherever I look. Do you know when it is likely to come back into stock at i-sells.co.uk? Thanks
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QHi. This item is out of stock wherever I look. Do you know when it is likely to come back into stock at i-sells.co.uk? Thanksanswer nowA Hello GeraintThank you for your question. The next due date we have is the 12th April. I would recommend placing your order now so your order is placed on back order and allocated when the stock arrives. If I can help any further please do not hesitate to contact meKind RegardsAnita
Can you tell me if I will hear noise from the outside. My outside wall backs onto the back of a shop who have a large and noisy air conditioning fan running 24x7. I have the windows closed to stop the noise, hence the condensation....would this unit transfer the noise into the bedroom ?
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QCan you tell me if I will hear noise from the outside. My outside wall backs onto the back of a shop who have a large and noisy air conditioning fan running 24x7. I have the windows closed to stop the noise, hence the condensation....would this unit transfer the noise into the bedroom ?answer nowA Hello GrantThank you for your question. It is a possibility that you would hear some noise within the room. Is the property a house or a flat as I maybe able to spec another unit for you.Kind RegardsAnita
We are looking for individual heat recovery fans for a bathroom and a kitchen.
The bathroom measures 2.2x1.6x2.5m. The kitchen measures 5.0x2.3x2.6m. What would be suitable for each room, especially the kitchen since according to your (very useful) air exchange guide, the kitchen would require a massive air exchange rate (299 l/sec !?). Also, can an ordinary electrician install individual heat recovery fans?
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QWe are looking for individual heat recovery fans for a bathroom and a kitchen. The bathroom measures 2.2x1.6x2.5m. The kitchen measures 5.0x2.3x2.6m. What would be suitable for each room, especially the kitchen since according to your (very useful) air exchange guide, the kitchen would require a massive air exchange rate (299 l/sec !?). Also, can an ordinary electrician install individual heat recovery fans?answer nowA Hello MarkThank you for your question. The HRV150 heat recovery unit will do your bathroom application but will not do the kitchen due to the size. You can however install a continuous running fan or a humidistat fan in to the kitchen. Please see below two product codes for two options of fans. If you have any further questions please do not hesitate to contact meCV2: QS12424Kair Smart: QS50879Kind RegardsAnita
Hi, I will shortly be installing a large dehumidifier for a pool room and this dehumidifier will do the required dehumidification. Im thinking of getting this Kair heat recovery unit simply to provide ventilation, but keep the incoming air warm. The room is 9m x 7m x 2m. Will it be suitable for this purpose?
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QHi, I will shortly be installing a large dehumidifier for a pool room and this dehumidifier will do the required dehumidification. Im thinking of getting this Kair heat recovery unit simply to provide ventilation, but keep the incoming air warm. The room is 9m x 7m x 2m. Will it be suitable for this purpose?answer nowA Hello ShaunThank you for your question and sorry with the delay. Please give me a call on 0208 463 9683 and I will be happy to talk through your requirementsKind RegardsAnita
Would your K-HRV150 unit be suitable for an 8ft by 11 ft garden room that has rather thin walls? The walls are breeze block with insulation and plasterboard on the inside and render on the outside, so the total wall thickness is just a bit over 15 cm.
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QWould your K-HRV150 unit be suitable for an 8ft by 11 ft garden room that has rather thin walls? The walls are breeze block with insulation and plasterboard on the inside and render on the outside, so the total wall thickness is just a bit over 15 cm.answer nowA Hi Colette, I have answered this on the original format
Is there a requirement for an internal or external condensate drain. Does the unit as sold for £286 come complete with the transformer/humidistate or does this need to be purchased separately
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QIs there a requirement for an internal or external condensate drain. Does the unit as sold for £286 come complete with the transformer/humidistate or does this need to be purchased separatelyanswer nowA Hello RogerThank you for your question. Everything you need comes complete within the box there is no requirement for a condensate drain on this unit. If I can help any further please do not hesitate to contact meKind RegardsAnita
Is there a maximum room size where this fan should be fitted
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A Hi PhilThis a good question and depends on the room designation.For instance, is more than capable of dealing with (and keeping dry) a domestic wet room which would be approx 2.5x2.5x2.5.Place it in a bedroom of larger proportions it works fine but there is no moisture creation. Same to be said for an even larger open plan lounge / dining room.Probably not a good answer but tell us the application you are thinking of and we may be able to help with advice.
Do I need one fitted in every room?
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A Hello KarenThank you for your question. This unit will only do one room. If you would like to give me a call on 0208 463 9683 and I will be happy to talk through other options with youKind RegardsAnita
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Simon Dalzell (verified owner) –
Fast and efficient. Excellent customer service.
Kiltox Customer (verified owner) –
The best money I have ever spent – Mr Brown
Kiltox Customer (verified owner) –
My take on this company is that of high standards with excellent products to save energy and create healthier living conditions. a well laid out website with clear guidelines on products and services Mr J Scott
Daniel Newman (verified owner) –
I’d like to leave feedback for Paul Gallagher.
I purchased a Kair unit from Kiltox after receiving advice from a surveyor. The information I’d already received seemed very daunting to a ‘layman’ but Paul helped me through the process and kindly showed great patience when answering my questions.
The service was very attentive and delivery very efficient.
Richard Davies (verified owner) –
Although it’s early days yet (i’ve only had your system installed only a few weeks), I have noticed a marked difference in the house.It seems to be doing the job it’s designed for. I haven’t opened a window for 3 or 4 weeks now.There is no condensation on any of the windows and the house feels warm and fresh throughout.
I first heard about your company from total strangers. I was waiting for a train and started chatting to a middle aged couple. They asked me why I’d move from Bristol to Carmarthenshire and was I glad thatI had. I said Yes
Bruce Burn (verified owner) –
This heat recovery fan was awkward to fit due to the 750mm random rubble stone wall ! ! ! This would have been the same for any fan.
The room is in the basement and its used as a sewing room with masses of expensive material stored in it – damp not wanted in here!!
I sealed the concrete floor with a two pack epoxy and carpet tiled it. But ventilation was the problem. KAIR information was comprehensive and the fan cost more than a simple humidity fan.
IT IS BRILLIANT – once installed and the humidity set on the edge of slow to fast we moved all the material into the room. Well we waited two weeks with the room closed up. The fan went from slow to fast at will. The sewing room was set up and the fan re-adjusted for occupancy.
In the depths of winter, wet rather than cold, the fan warmed the air coming in and took stale and moist air out 24 hrs a day.
The fan goes into fast mode the minute the steam iron is switched on, before you even notice the steam.
I would recommend this Kair Heat Recovery fan to anyone with similar room needs. I’m so glad that I didn’t waste money on some bathroom fan that would do the job.
Sewing room fully operational, no sign of damp, air fresh and never stuffy, ten Brownie points for me with such a good job done.
John O’sullivan (verified owner) –
This is intended as a long term solution to a severe condensation problem in a couple of Victorian bedrooms. It will need a month or so to determine whether it is successful or not. The product has the recommendation of Wykamol and various other damp experts so my expectations are high. Installation and electrical connections very straightforward.
MARTIN RUBENSTEIN (verified owner) –
KHRV150/12RH
When I took hold of the box from the courier, I wondered what could justify a cost for such a light parcel. And when I opened the box and looked at the contents, I thought it all the more so. For considerably less money, one could buy a dehumidifier; on the other hand, I have seen passive air-brick filters with a vapour-permeable membrane for sale for £90. Nevertheless, having fitted the unit and its transformer-sensor unit, I believe you simply have to forget about the cost and enjoy its benefits.
I fitted the unit in my kitchen, having removed an inadequate standard fan, which I never used. Instead, I had previously used an Ebac Powerpac 21 dehumidifier. It did its job slowly and reasonably effectively, although it felt like a battle that could never be won To get a feel for how rapidly the humid air in the kitchen could be cleared, one only had to open the back door and watch the humidity meter drop almost like a brick. The dehumidifier could take two hours or more to achieve the same result., if it ever did
I had known about heat-recovery ventilation for a few years and finally decided to try it. Having removed the old fan, I very carefully stitch-drilled the brickwork to open up the holes. The ventilator unit is cleverly designed; for example, the front panel is spring loaded allowing the panel to sit flush with the wall whilst the body of the unit slopes very slightly downwards to the outer wall so any water drains out. Unless you cut the power to the unit, it runs all the time; when seemingly off, it is silently running in trickle mode, and when on, it is in boost mode – either automatically selected by the sensor unit, or manually selected by the user using the pull cord. There is a fuse in the sensor unit, which is in the factory-set position of a fast trickle and one has the option to move it into the slow-trickle fuse-holder. This is what I did and and most happy with the slow trickle: it silently brings in fresh air without making the room cold. I have to admit I was skeptical about this, expecting to come down to a cold kitchen in the morning, but not a bit of it.
The unit has now operated in cold but dry wintry weather and also in cold and wet wintry weather and, much to my pleasant surprise, especially in the wet weather, the unit performs extremely well, far surpassing my expectations. It took only a couple of adjustments of the thumb-wheel to set the unit so it wasn’t too sensitive or too insensitive. Now as soon as a pan starts to boil, the fan comes on. If there is so much cooking that the kitchen heats up by a couple of degrees, the control unit can turn the fan off for a while until the humidity increases yet further; this is just the nature of the temperature characteristics of the humidity sensor. This is easily pre-empted by pulling the boost cord after the fan comes on; the boost cord is a manual over-ride and the fan will stay on until the cord is pulled a second time My thumb-wheel is set to 58 and I expect that as the warmer weather comes along I may need to tweak it to a slightly higher setting to avoid it coming on too frequently. But as someone who prefers to have as much manual control as possible over devices, the thumb-wheel gives total control of the humidity setting at which the ventilation unit switches on, and I don’t expect to have to alter it more than twice a year to the optimum position for the ambient temperature.
I used to think the dehumidifier was reasonably effective at reducing moisture in the kitchen, but this heat-recovery ventilator has set this into perspective. It has also freed up floor space and is a lot quieter; I’m also sure that there will be a noticeable saving in electricity, too.; there has been no need to run the cooker hood since I fitted the ventilator, and the rest of the house, including the bedroom is less humid, so there has been much less need to run the dehumidifier in that room. The adjoining lounge is now much dryer than it had been beforehand. It was very satisfying installing the ventilator and its control unit, and it has been even more satisfying seeing its benefits, including not coming down to wet windows in the morning after drying washing overnight. It’s also worth mentioning that the staff at Kair were exceptionally helpful both before I bought the unit, answering my various questions and setting my mind at rest, and also duting the fitting of the unit when I wanted to seek clarification of a couple of points.
My wife is delighted with the unit and it will take a long time for her to get over its novelty and all the more so for having the dehumidifier out of the way. In short, I cannot fault this heat-recovery ventilator in any way, and I wish I’d installed one years ago.
paul fenton (verified owner) –
great product solved my damp problems
Customer (verified owner) –
Had the product for a couple of weeks half installed and now fully installed.
There were a couple of things people need to be aware of. First is it is a 6 core rather than the 4 core my old extractor in the bathroom was. The second is it needs to have about 12 of wall behind it rather than the double thickness brick wall we had in the Victorian house. As the whole thing needs to be in the wall our electrician had to get a suitable box to put behind it and insulate it so that it behaved properly.
Wolfgang Fischer (verified owner) –
This is the fifth unit I’ve bought, to fit yet another room. This ventilator ensures that, in conjunction with suitable insulation and correct radiator positioning (that means, radiators under the windows, not on inside walls), there is no condensation and mould in the room, not even if living at a seaside location.
I have fitted the first room in 2011 and no problems with any of the units so far.
Gary Paterson (verified owner) –
Very happy with the product well worth the money
Peter Culling (verified owner) –
Brilliant product, excellent service from retailer supported by superb technical services at manufacturer.
Product is simple yet effective, easy to install and does exactly as described.
Highly recommended.
Customer (verified owner) –
Brilliant product, excellent service from retailer supported
Customer (verified owner) –
The service and the product quality is great.
while it took me a long time to leave a review for this HRV unit I shall believe it is worth taking time to read and hopefully will assist all future byres that will need one .
I am Mechanical engineer and initially was skeptical about the HRV unit. this has been installed in my childrens’ bedroom and it is very quiet when in standard – background mode. The room has exposed ceiling, floor and a wall like an offset. This unit did overcome issues with mould and damp to its deep roots, ever since we are not having the issues that were present prior the installation of the HRV unit.
I do strongly recommend to all of those who may go through similar conditions which we went prior the damp issues.
this definitely works as I have given more than a year of use before I wrote this review which as you may see definitely deserves.
Customer (verified owner) –
The service and the product quality is great.
while it took me a long time to leave a review for this HRV unit I shall believe it is worth taking time to read and hopefully will assist all future byres that will need one .
I am Mechanical engineer and initially was skeptical about the HRV unit. this has been installed in my childrens’ bedroom and it is very quiet when in standard – background mode. The room has exposed ceiling, floor and a wall like an offset. This unit did overcome issues with mould and damp to its deep roots, ever since we are not having the issues that were present prior the installation of the HRV unit.
I do strongly recommend to all of those who may go through similar conditions which we went prior the damp issues.
this definitely works as I have given more than a year of use before I wrote this review which as you may see definitely deserves.
Bharat Vara (verified owner) –
not noticed the difference just yet buy hopefully
company is great with great after sales support
superfast delivery
will use again tyhanks
Julian Batt (verified owner) –
worked well from day 1 has remedied the condensation problems in the whole house
Paul Tyrrell (verified owner) –
great products
Aleks Gay (verified owner) –
Not fitted yet as it is such a dated appearance I need to make a suitable cover for it.
And the control box looks even worse.
However, the method of operation looks good so I imagine that it will work well.
Anthony Dunn (verified owner) –
Having recently installed this to replace an old Vent-Axia fan that made a racket, after several weeks of use, seriously impressed at this fan. The ability to determine the humidity level at which to operate the boost mechanism is a serious plus point and this has proven to be extremely adaptable, Then there is the pull cord if you wish simply to give it a boost regardless of any humidity setting. Even in the boost mode it is still an effortlessly quiet device. It is clear from holding my hand in front of the inward air flow that that the heat exchanger is way more effective than in the old Vent-Axia. Fingers crossed regarding reliability and longevity.
Edmund Nerou (verified owner) –
Does not blow cold or even cool air at you, very important in a bathroom setting. Pretty quiet but not silent. Very efficient, especially considering the price.
Karl Schafer (verified owner) –
An excellent product which hopefully will expel any moisture to prevent mould growth on a stairwell where it has been installed. My only gripe was installing it from the inside only as there was no access to the outer wall. (stairwell to flat a flat) Not as easy as was claimed; therefore only 4stars
Kim Trinh (verified owner) –
Info about this product on the website looked straight forward but when the product arrived and looking into the instruction booklet for installation, it wasn’t straightforward and we had to seek advice to get info on how it should be installed. It’s quite fiddly. Took much longer than expected and so costs me more due to time taken with electrician. It is now summer so not really using it. I just hope it will work during the winter time to prevent condensation and mould.
Sutera Ritrawe (verified owner) –
Brilliant product. I got a bungalow of 8 flats in. In the past, every room has problems with condensation, humidity, mould. I tried many things to help combat this problem. However, every time I visited my tenants, i always felt the room air is humid and not having fresh air. I know opening the window could be solution but in winter time, no one like to do it.
I got 2 Kair to try first after speaking to Marc, I could felt the difference of air in the room. The room became less humid and the air has been fresher. After trying for 2 rooms, I decided to put the rest with this fan. The job was done today, I was very pleased as the air in all the rooms are really nice not like before. I highly recommend this product. Because the flat is self contained, so I was worried about the noise. Kair is very good as in normal mode, I hardly hear anything but when it is boost mode of course the noise is stronger but it will trick back to normal mode when the humidity is at set level. To install it is a bit hard as the old fan hole is smaller so we need to make it bigger but our electrician did it for us very well.
Thank you so much to Marc for giving useful advice and selling such a good product like this.