Posts Tagged ‘clogged air filter’

If you own an AC window unit, you already know they are not the most reliable! If you think your unit is broken, there are a few tell tail signs to look out for from DoItYourself.

Strange Noises

While noise is common with an AC unit, strange ones should not be. If you happen to notice a loud wailing noises coming from your AC unit, it is most likely that your AC unit’s fan belt is not working. It probably has fallen out of place, simply put it back on track and your problem should be solved. However, if it is severely damaged you may need a new belt.

Low Refrigerant

If you have a leaky AC, then you probably have low refrigerant levels. If this is the case you may need to consult an HVAC professional to assist you further.

Pungent Odors

What’s that smell…? Unfortunately, bad odors are a common problem with AC window units. It is usually from a build up of moisture. You can avoid this problem by frequently cleaning your air conditioner’s filters.


If the grills on your air conditioner are blocked, then you will need to clean the units motor, fins and fan. Wipe down all of the parts with a clean cloth, but be sure not to get any of the parts wet!

So…any of these problems sound familiar? Yeah, we thought they might! Remember, it is important to take care of your AC window unit and always change your filters! At Casteel Heating and Cooling, we are always here to help!

…and save A LOT of money later!Casteel Heating and Cooling

What am I talking about…filters! It’s pretty simple to change a filter once a month. It will cost you between $25-75 per case of 12 usually and depending on the size of the filter. That is a year’s worth of filters. Not expensive at all, is it? What is expensive? Dirty air filters!

Dirty air filters are a source of increased operating costs and poor cooling system operation.

Dirty air filters can:

  1. reduce air flow in the building
  2. cause dirt to accumulate on the fan blades, wasting your energy dollars
  3. cause excessive dirt build-up inside the duct system, leading to mold or allergen problems in a building and to the need for more costly duct cleaning or replacement
  4. block the cooling coil itself with dirt, reducing system effectiveness and possibly leading to costly repairs
  5. lead to frost build-up on the cooling coil and reduced or totally blocked air flow in the system
  6. eventually permit dirt to bypass the filter where it soils and blocks the blower fan itself, leading to more costly repairs.

Some of these issues can cause upwards of $500 to repair. Sounds like a good trade to me…$25 now and save $100’s later.

The filters on an air conditioning or hot air heating system should be changed monthly when the system is in use. Discuss with us the possible need to clean the blower fan and duct work.

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