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

Great service from McNally's. They had installed two humidifiers on my furnaces earlier this year and was very happy with their work.

I just called then this morning for an emergency fix for one of my furnaces not working. From the time when I called into their office until repair complete and furnace was working, only 1 hour. Unbelievably responsive!

Brian C.
Bartlett, IL