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Air Filters Explained...

Installing a new disposable air filter

Checking Your Air Filters...

It's the single, most important thing you can do for your central heating & air conditioning system!

FAQ's

Air Filter Questions

  • How often should I check my air filter?
  • How often should I replace my air filter?
  • How often should I clean my air filter?
  • Where is my air filter located?
  • Do I have more than one air filter?

We suggest checking filters monthly. If you have a disposable type filter, (these usually have a cardboard edge), and if it is dirty, just replace it. Don't attempt to clean it. Some higher efficiency 1" pleated air filters can go up to three months before needing replacement. But in the higher-use seasons, it's better to check more often.

replacing disposable air filter.

Different systems have different filter locations. If you don't know where your filter is located, now would be a good time to learn! Usually, there is a removable filter access door in the return air duct next to the furnace or indoor unit. This can be in a basement, crawl-space, utility closet, garage, or attic.

Sometimes, especially with older systems, the filter is located inside the furnace itself, next to the blower motor. And some systems have a central filter grille installed in a wall or ceiling. The grille swings open, revealing the air filter.

Keep in mind, many air filters are directional - the air is meant to flow through the filter in one direction only. Look for an arrow or airflow symbol indicating direction. The arrow should point towards the furnace or air handler. If your filter does not have any arrows, see if one side of the filter looks rougher than the other side; that would be the side to collect the dust, so the other side would face the equipment.

If you have a permanent-type (non-cardboard) air filter, it is very simple to clean. Just follow the four simple steps below...


Step 1 - With the thermostat in the off position, locate and remove your air filter.

Washing off an electrostatic air filter.

Step 2 - Using a garden hose with good water pressure, spray off the filter - from both sides. You can repeat this process several times if the filter is very dirty. Just be careful not to use too much pressure or damage could be done to the filter media. When the water runs clear and the filter is clean you are ready for the next step.

Step 3 - Shake off the excess water. It is a good idea to let the filter sit out and completely dry before reinstalling it. But if it is still a little damp, you can go ahead and re-install it.

Step 4 - Slide the air filter back into the rack, noting proper airflow direction, and you are done. Now you can turn your thermostat back on and remember to do this again next month.

TIPS

Important Notes...

  • Some systems, especially larger ones may have more than one air filter. They can even be different sizes.
  • If you have more than one heating and/or air conditioning system, then you definitely have more than one air filter.

HVAC TIPS-HOME

Please keep in mind that the information found on our website is provided free of charge and Hannabery HVAC does not assume any liability resulting from the information we provide. If you have a tip regarding your HVAC system that you would like to share, let us know... If we like it, we may add it to our website!

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