Healthy Indoor Air Systems

Knox, IN IAQ Repair and Installations


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McGrath Refrigerationstarstarstarstarstar4.9 / 5

145 Total Reviews 574-772-3575$2520 S US 35, Knox IN

A healthy indoor environment is dependent on a lot more than maintaining a proper indoor temperature. Even before Covid, it was clear that ensuring a safe, truly comfortable indoor space also involves humidity control, air filtration, and air sterilization systems.

If you're a typical Knox, IN resident your family spends over 90% of their time indoors either at home, school, or work. If you're a business manager or owner, ensuring a comfortable healthy environment for your customers and employees is just good business. For your home, maintaining good indoor air quality (IAQ) will keep your family healthy and comfortable by mitigating ailments like allergies, colds, dry eyes and skin.

  • We provide prompt professional Indoor Air Quality (IAQ) services
  • Enjoy improved comfort with our Maintenance Plan
  • McGrath can tackle any IAQ service or repair you need

Common IAQ challenges

  •   Viruses and bacteria
  •   Block mold, or other molds and fungi
  •   Excessive dust
  •   Allergies caused by dust, pollen, mold and other indoor pollutants
  •   Dry winter air with resultant dry eyes, skin and sleep issues
  •   High summer humidity increasing the risk of mold and mildew
  •   Lingering food or pet odors
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Clean Indoor Air Solutions

McGrath Refrigeration Heating & Air Conditioning offers full IAQ services. We are experts at analyzing your indoor air challenges and offering solutions for a safer more comfortable home or business. We feature IAQ systems from Honeywell, Aprilaire®, and White Rodgers. Systems we often utilize include:

  • Honeywell Home Systems:
    • Air cleaners, air filters, UV purifiers, dehumidifiers, humidifiers and ventilation systems
  • White Rodgers / Emerson® Systems:
    • Media air cleaners, steam humidifiers, flow-thru humidifiers, and UV germicidal lights
  • Aprilaire®:
    • Humidifiers, dehumidifiers, air purifiers

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Some of our IAQ products:

Call today to install a Honeywell Air Cleaner

Honeywell Air Cleaner

Call today to install a Honeywell Dehumidifier

Honeywell Dehumidifier

Call today to install a Honeywell Humidifier

Honeywell Humidifier

Reme Halo IAQ system

Reme Halo Air Purifier

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IAQ Solutions:

  • Air Filters: Disposable air filters help reduce dust, pollen, pet dander, smoke, bacteria and more. Once installed, you only need to replace the filter every few months, depending on use and size. Upgrading your furnace filters to a high quality media filter will result in cleaner more dust free indoor environments.
  • Air Cleaners: Electronic air cleaners are a more advanced and effective solution than disposable air filters. Air Cleaners capture more airborne particles from the air passing through them and require minimal maintenance. No replacement filters are needed.
  • Air Purifiers and UV Systems: UV air purifiers work with your HVAC systems ductwork utilizing ultraviolet light to address surface contaminants such as mold and bacteria.
  • Humidifiers: Humidifiers help balance winter humidity levels in your home for optimum comfort. Evaporative humidifiers or steam humidifiers are great choices depending on the details of your application.
  • Dehumidifiers: For the summer season, or year round in commercial settings. Excess humidity promotes mold growth and condensation and dehumidifiers will remove moisture to help you maintain desired humidity levels.
  • Heat recovery ventilators (HRVs): HRV's provide fresh air as needed to the indoor environment while maintaining system efficiency particularly in newer and better insulated homes.
  • IAQ Controls: Advanced environment control systems monitor your IAQ and ensure HVAC operation parameters that maximize the quality delivered by your comfort system.
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About McGrath Refrigeration Heating & Air Conditioning

    Now in our third generation, we have been family owned and based in Knox, IN since 1967.

  • We are a complete indoor air quality resource. Our HVAC specialists can help identify you best solutions to provide health more efficient indoor environments.

  • All of our HVAC specialists are fully factory trained and insured. We have decades of experience providing IAQ services throughout Starke County, IN.


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