Reliable heating & cooling services for when it counts

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Covering the fox valley & surrounding area
Why McNally’s?
  • Honest, upfront, competitive pricing
  • 10-year limited labor warranty on installs, 2-year limited warranty on repairs
  • All work thoroughly tested
  • Professional, punctual and courteous service techs
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We represent the finest HVAC manufacturers in the industry, bringing you the best in technology, efficiency and reliability.

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Don’t just take our word for it...

This company was awesome. Our air broke down on the hottest days of this summer. They came out and took a look to make sure the air wasn't fixable and then gave us an immediate quote. Their quote was well under other companies. They were able to install in a speedy time. The installers were nice, friendly, and professional. Would use them again for sure.

Melissa S.
South Elgin, IL

I wholeheartedly recommend McNally's. I've used them twice, once for duct cleaning and again when my furnace broke down. They diagnosed an problem on a furnace that another company said would cost over a grand to fix. They're prompt to respond, show up when they say they will, and do good work for an honest price. Doesn't get much better than that.

John O.
Chicago, IL