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...

It only took Brian one day to do the work. He explained to me what he was doing along the way and was happy to answer my questions. He arrived on time and took care to protect my white carpet.

Cindy
Geneva

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