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...

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

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