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Changing the HVAC Filter​


What Can Go Wrong If Ignored

A system that has a dirty filter can suffer from pressure drop, which can lead to reduced air flow, or “blow-out,” resulting in no air infiltration at all.  Any of these conditions can cause the system to work harder to keep the home warm or cool (depending on the season and the setting).  And any mechanical component that has to work harder to run efficiently puts undue stress on the whole system, which can lead to premature failure, resulting in repair or replacement.


Also, a dirty filter that’s exposed to condensation can become damp, which can lead to mold growth that can be spread throughout the home by the HVAC system.  This can lead to serious health consequences, not to mention a compromised unit that will likely require servicing and may require replacement, depending on the severity of the moisture problem. 

How Often?

Your HVAC technician should service your unit at least once a year.  Because a HVAC unit contains moving parts, it’s important that belts are not cracked and dry, ventilation ductwork is not gapped, cracked or rusted, and components, such as coils and fans, are clog-free and adequately lubricated for unimpeded operation.  This sort of evaluation is best left to the professional, unless the homeowner has had the appropriate training.

The filter of the unit, especially if it’s an HVAC unit that will tend to get nearly year-round use, should be changed by the homeowner at least every three months, but possibly more often.

Can Changing HVAC Filters Improve Indoor Air Quality?

Your home’s air quality will have quite a big impact on your family’s health, and your HVAC system is one of the biggest contributing factors when it comes to indoor air quality. Anyone that has recently begun to notice unusual respiratory issues should take a closer look at how their HVAC system’s filters could be affecting their health and well-being.

If you have any questions or would like to get on a routine maintenance program call us today!

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