How Long Does Metal Ductwork Last?

One of the key factors in preventing or delaying the onset of rust on your metal ductwork is ensuring there is no condensation appearing on the ducting.

You can stop condensation on metal ductwork most of the time, however, the only exception to this would be instances of dramatic temperature fluctuations that occur due to freak weather occurrences, a lack of electricity to power the ventilation system or a combination of both.

These occasions are extremely rare. But here are some things you can keep track of, to ensure your ducting does not develop condensation.

• Check your ducting for any leakage, is there holes? Are they sealed?
• Apply ducting insulation
• Use ducting tape on secure connections to further ensure their efficiency
• Check your ducting for rust, and/or condensation on the outside of the ductwork

Generally, the likelihood of metal ductwork growing mould is very low. However, this can happen if certain circumstances are met. A clean, sealed duct will present an environment where mould can’t grow, this changes with the introduction of dust & humidity.

Why else would my ducting need replacing?

Here are some key factors that would determine your ductwork being replaced without the intervention of an HVAC technician to check themselves.

• A reduced input/output (this can indicate a large amount of dust inside the ducting)
• Broken areas that allow air to escape, whether this is on the ducting pipe or the connecting joints
• Condensation on the ductwork
• If the ducting hasn’t been checked or worked on in years
• Mould in areas neighbouring the ducting (could be an indication to mould being within the ductwork.)

Is ducting better than AC?

This is a personal preference and is relevant to the space each system operates in, the main difference between the two is the redistribution of air.

Ventilation systems that utilize ducting make use of fresh outdoor air which replaces the extracted indoor air, whereas Air Conditioning systems condition and redirect the air of the room it is in.

Air conditioning in addition to an open window can help redistribute fresh air with a similar effectiveness to ducting whilst using less space than HVAC solutions that incorporate ducting. However, ducting systems by their nature facilitate the introduction of fresh air and extraction of allergens etc.

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