Reliable heating & cooling services for when it counts

Free Estimate
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
Learn More About Us
We represent the finest HVAC manufacturers in the industry, bringing you the best in technology, efficiency and reliability.

Learn More About Us

Don’t just take our word for it...

We had our air ducts cleaned and sanitized by McNally's and the technician was on-time, friendly, polite and respected our home. He was on schedule in terms of the time estimation it took and overall it was a great experience. This was a very different from my last duct-cleaning a few years ago with one of those "" duct cleaning companies where I had a creepy tech who kept trying to upsell me and took twice as long as the estimated time. The previous company even scratched my hardwood floors - it was such a nightmare. McNally's is professional all the way around and I really appreciate the care they take when in our home!

Leah S.
St. Charles, IL

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