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.


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