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Indoor Air Quality Tips To Keep Your House Cool

How to Keep Your Air Clean and Cool At the Same Time 

We all know that a clean house is a happy house, but in the summer, a cool house is a happy house, too. Since one of the biggest ways to keep your home cool and clean is making sure to keep humidity and moisture away, we’ve talked to our resident expert, Keith Hill, Minnesota Air’s technical support manager, to fill us in on some indoor air quality (IAQ) tips that pull double-duty and keep us cool, too.Indoor air quality

Shut Your Windows

“Consider the humidity when opening windows,” says Keith. “Also consider the airborne dirt and spores when you open the window.”

Think about your senses on a typical summer day: you may see the trees blooming in your backyard, hear your neighbor mowing the lawn, or smell someone barbequing or having a bonfire down the block. Yes, all these things paint a wonderful picture of summer, but when you take the allergens, dust and other particles into consideration, they may also make you second-guess opening the window to feel the breeze.

If you can see it, smell it, and sneeze at it – its likely something that contains dirt or spores. And you don’t want those – or humid air – in your home.  

A Clean Filter Is A Must

We can’t stress it enough – clean your filters! It not only stops all that dirt, dust, and allergens from entering your home through the HVAC system, but it keeps the whole system functioning well – which keeps you cooler, because you will need to make fewer repairs than someone who doesn’t change their filter as often.

Really, this is probably one of the easiest and most important things you can do for the air quality in your home and if you’re still not convinced, check out our Air Filters 101 tutorial.

Clean Your Air Conditioning Coil

We rely on our air conditioning system to keep us comfortable in the summer months. It sends hot air out to keep us cool, and conditions the air to remove humidity and keep us dry.

Keith says the key to keeping your air conditioner pumping clean, cool air is to keep the evaporator coil (or the A-coil) clean. Located on the indoor part of the unit, it cools the air and extracts the moisture from the air, but if not maintained, it also can create indoor air quality problems.

“The moisture that it collects also contains some dust from the air, and if not drained away properly, it can stagnate and grow mold,” says Keith. “As the mold grows it can create a blockage in the drainage system. Between the mold growing in the drain pan of the coil, and the potential for water leakage causing water damage to the surrounding area with more mold and mildew issues, it really is important to keep the coil clean and maintain the drainage system.”

Keith says there are some things you can do to make sure it stays clean:

  • Change that air filter (of course), and never ever operate the unit in heating or cooling without a filter.
  • Inspect the underside of the coil every three or four years for dirt and debris.
  • If you aren’t sure how to clean it, ask a pro. We know a few here at

Consider A UV Lamp

An ultraviolet lamp, or UV lamp is a wonderful little killer of mold spores or other living organisms that may have made its way into your airstream. A UV lamp is an air purifier, but Keith says if placed in the system so it “shines” on the evaporator coil, it keeps the evaporator coil clean.

“It’s quite common to use UV in commercial applications, and it’s beginning to catch on in residential,” says Keith.

Remember, keeping your home’s equipment clean also means keeping it working, and that equals comfort and safer air for your family.

To learn more about the products that can help improve the IAQ in your house, click here.

System Giveaway

For more energy saving and home comfort tips, visit! Stay Comfy, Minnesota is your Minnesota resource for air conditioning repair, furnace repair and HVAC tips and advice. 



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