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...

The folks at McNally's were true to their word. They showed up when they said they would, were conscientious, thorough, and fairly priced. Jon was personable and had our 2 air conditioning units humming in under an hour. If you are too hot or too cold I highly recommend McNally's.

Chris G.
St Charles, IL

The furnace at my rental property stopped working and my tenant had called 4 seasons. The quote they gave me was absolutely ridiculous. I then called McNally's and spoke to Brian. He was extremely knowledgable and even came out the same day to do the repair. I highly recommend McNally's because they are a trustworthy company with fair prices and they do a great job!

Ali H.
Bartlett, IL