Indoor Air Quality

family preparing dinner at home in their kitchen

An essential component of enhancing your home's performance is improving indoor air quality. A well-sealed, well-ventilated home reduces the amount of indoor pollutant levels that can affect your family's health. Wisconsin Home Improvement home performance audits include several tests to assess your home's indoor air quality and identify areas that need attention.


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*on jobs larger than $2,500 / does not include new construction

What Are the Sources of Indoor Air Pollution?

The substances that cause indoor air pollution take many forms: gases, contaminants/particulates, mold, bacteria and more. Some common indoor air pollution components include:

  • Carbon Monoxide 
    CO is produced through combustion from furnaces, gas-fired water heaters, gas cooktops and wood-burning stoves. This gas is odorless and can build up in homes that are not properly ventilated.
  • Radon 
    Radon is another dangerous gas that can invisibly build up inside homes. It seeps into basements and foundations. Radon is known to cause lung cancer, but is easily mitigated if identified through testing.
  • Allergens 
    Allergens can include seasonal pollen and dust mite dander, which can affect family members who have allergies and asthma. Homes that are not well-sealed can allow these particles to enter the home, while poor ventilation can circulate them throughout the house.
  • Mold 
    Mold develops in poorly sealed or poorly ventilated homes when moisture is allowed to build up from leaks, condensation and humidity.

Home Performance Audits Target Indoor Air Pollution

Wisconsin Home Improvement's inspection can improve home air health by identifying areas in the home that contribute to poor indoor air quality. The elements of the home assessment that address indoor air pollution include:

  • Blower door testing assesses the building's tightness, or how much it leaks. When paired with infrared thermal imaging to identify where leaks and gaps are present, the blower door test can help to seal out airborne allergens like pollen.
  • Combustion safety testing looks at carbon monoxide levels in flues and other ventilation from furnaces, water heaters and gas cooktops.
  • Radon testing identifies the presence and levels of radon in a home. A testing unit is left in a lower area of the home for at least 72 hours and is then analyzed for levels of radon.

Concerned about your home's indoor air quality? Contact us today to schedule a home performance audit. Also be sure to check out our current specials to take advantages of our cost-saving deals!

Radon Testing

cracked foundation radon
The state of Wisconsin is located in an area of moderate-to-high radon concentrations, so it's important to conduct a radon inspection in each home. Radon can be hit or miss — one home may register high concentrations, while one right next door could register minimal amounts. Radon is measured in "picocuries per liter of air" amounts often written as pCi/L.

Breathe easy in your home!

Our air quality experts are here for you.


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  • I just wanted to take a minute to thank you and your Madison crew for the great work they are doing. Over the last few months I have worked closely with Dann, Roger, Marc and Jeremy and am extremely impressed with their attitudes and the quality of their work.

    Brandon Langeteig, Project Home, Inc.
  • We were pleased with work done by Mike and Kevin. They deserve a pat on the back. Thanks!

    Eugene Hefter, WI
  • Steve and Frank are very good representations of your firm -- very professional. Thanks!

    Jim Young, WI
  • The work your team did is fantastic! Also I would like to compliment your crew on their professional approach to our house and their work.

    Ryan, WI
  • Jan and I were amazed and impressed by the crew’s positive work ethic coupled with their gracious and friendly manner. Obviously they knew what they were doing and set to task with quickness and absolute thoroughness… you have our deepest appreciation.

    JoAnne and Jan V., Greendale, WI
  • Please thank your crew for the great job they did here. They were all very personable, worked very hard, and they took the time to explain what they were doing.

    Barbara F., Belgium, WI
  • Thursday and Friday of last week one of your crews were at my home putting in some additional insulation and doing some other work. I just wanted to tell you that my wife and I were very impressed with the professionalism of your men.

    John & Jennifer P., WI
  • Your employees were prompt, courteous and friendly.

    Lois W., Menomonee Falls, WI
  • I wanted to thank you and your team again for the
    great work you did and insulating our home. It is only been a week, and the
    difference is amazing. Every room in this house feel substantially warmer.

  • Mike & Erin M.

    We wanted to provide feedback on our experience with Peter, who did our home energy audit.  We felt he went above and beyond what was expected of him.  He was very thorough and was genuinely concerned about any issues causing inefficiencies in our home.  He explained things in terms we... Read More

  • Tim S.

    Steve, just a side note and I would not send this if it was not completely true - Mike and Pete were both fantastic. I was impressed. We had just had other major construction and have many comparatives for the work WHI did. I would come home and never know they had even been there.

  • Cindy S.

    I really feel compelled to give a "shout out" to everyone I have come into contact with at WHI. First off - Jody. You are so friendly and helpful on the phone, forgiving me for my inability to "on-line sign", switching up of dates, declining work and then changing my mind.

    Cindy S., Whitefish Bay, WI
  • James V.

    Dear Steve, 

    We at Grace are so pleased with the quality of work and the professionalism of the crew that did the insulation. Mike and Igor were so respectful of the building and its contents, and so nice to everyone in the congregation who was working at church. 

    James V., Milwaukee, WI
  • Jenny P.

    I just wanted to extend a thank you to you and all of your employees who have spent time at our home fixing our attic issues.