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...

They told me that they would complete the job in one day. They arrived Tuesday at 8:30am, worked in 90° indoor temp and 97° outdoor temp and completed the job by 5pm, as stated. The work was done quickly, clean and without typical HVAC service drama.

A. Kavaliauskas
Glen Ellyn

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