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.


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