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!
Why Does My AC Keep Turning On and Off?
If your air conditioner is switching on and off more than usual, it is important you get it fixed as soon as possible. An AC unit repeatedly switching on and off will raise your monthly bill, cause extra wear and tear on the unit itself, shorten the lifespan of the unit and create the need for more repairs.
Fortunately, the cause of a short-cycling AC unit is often a quick fix. Below are the most common reasons your air conditioner constantly turns on and off, a few of which you can check and even fix yourself. When in doubt, call a professional!
1. Thermostat Problems
One of the most common culprits to a short-cycling AC unit is a faulty thermostat. Your thermostat is in charge of telling your air conditioner when to run, so if your AC unit is turning on and off more than usual, always check the thermostat first. The issue could be electrical, meaning the thermostat is wired improperly or needs new batteries. It could also be due to poor thermostat placement. Your thermostat should be placed somewhere where it will get the best possible temperature reading. If it is near a window, warm room, or air vent, the thermostat is receiving an inaccurate reading.
2. Dirty Filter
Another common culprit with a simple fix is a dirty filter. A dirty filter restricts airflow which makes the AC unit work harder to reach your desired temperature. This can cause the unit to freeze-up or overheat and shut off prematurely. Make sure you change your filter as often as the AC unit manufacturer recommends. A dirty filter causes many more problems than this one!
3. Frozen Coils
If your evaporator coils are caked in dirt and debris or you have a refrigerant leak, your coils will freeze-up and cause the AC unit to shut off. Oftentimes, the AC unit will sporadically turn on and off as it attempts to regulate the pressure and reach your desired temperature. If you suspect a refrigerant leak, shut off the unit and call for a repair immediately.
4. An Oversized AC Unit
Many are surprised to learn that a larger-than-necessary air conditioner is not what you want. If your unit is too large for your square footage and climate, it will unevenly cool your home and turn on and off too frequently. A short-cycling unit uses more energy, will require more repairs, and will have a shorter lifespan, all of which cost you more money.
If you aren’t sure why your AC is repeatedly turning on and off, always call a professional. This short-cycling is causing unnecessary wear and tear on the unit, and it could be the result of something more serious like an electrical problem.
In need of an AC repair? Grand Home Services in Aurora provides air conditioner repair, inspection, and replacement services throughout the Denver Metro Area. Call us or contact us online today!
