5 AC Problems Caused by a Dirty Filter

We are sure you’ve heard it before: change your AC unit filter on a regular basis! After all, it’s a quick and inexpensive task, but many don’t quite understand how important a clean filter is for your entire system.

Simply put, a dirty AC filter inhibits your air conditioner from doing its one job. If left long enough, a dirty filter will wreak havoc on your AC unit and cause system breakdowns and expensive repairs that could have been avoided. Below we walk through 5 very common AC problems caused by a dirty filter.

Freeze-Up

When your air conditioner’s filter fills with dust and debris, the air flowing through your unit is no longer as clean as it should be. This results in a buildup of dust on the evaporator coil which leads to the coils freezing up. Eventually the coils defrost, water leaks from the unit, and the process starts over.

If your unit experiences a freeze-up, we recommend getting an AC unit inspection and cleaning. Though the initial culprit was a dirty filter, your unit must be cleaned to fix this issue.

Short-Cycling

(new article: why does my AC keep turning on and off)

When your filter is dirty and the airflow through the unit is inhibited, your air conditioning system must work harder than normal to reach your set temperature. This overworking can cause the unit to freeze-up or overheat, both of which can force your unit to shut off prematurely and short-cycle.

Higher Utility Bill

A dirty filter restricts the airflow through the unit causing your unit to overwork to reach your desired temperature. This will cause your AC unit to run more often and longer than necessary, raising your monthly utility bill.

Shorter Lifespan

When a manufacturer provides the typical lifespan of their AC unit, this comes with the expectation that the unit is properly maintained. An overworked, poorly maintained unit is bound to have a shorter lifespan. If you neglect to change your AC filter, your unit must work harder than necessary, increasing wear and tear. Even worse, dust and debris can cause a system failure, forcing you to buy a new AC unit.

Failed Compressor

One of the most expensive repairs your AC unit might require is a compressor replacement. When your unit is dirty, your compressor is taking the brunt of the extra workload. This will eventually lead to the compressor overheating and failing, requiring a replacement. Due to the cost, many HVAC contractors recommend replacing the entire AC unit. Many times, this expensive repair can be avoided with a cheap filter replacement!

Not sure what filter you need or how often you should be replacing your filter? Check out our articles below. Always refer to your AC unit’s manufacturer recommendations and speak with an HVAC professional if you have questions.

https://grandhomeservicesllc.com/the-4-types-of-hvac-filters/

https://grandhomeservicesllc.com/how-often-should-i-replace-my-air-filters/

In need of an AC unit inspection, cleaning, repair, replacement, or just have a question? Grand Home Services in Aurora, Colorado provides air conditioning services throughout the Denver Metro Area. Call us or contact us online today!