Get Adobe Flash player

Gilley’s Heating and Air Conditioning has served the Northern illinois area since 1985.

Congress has extended the energy efficiency tax credit of up to $500 for 2016. Comed has instant rebates on 14 seer & 16 seer A/C systems! Nicor has instant rebates on 95% furnaces! 


We serve the residential, service and replacement need, commercial service and replacement and any new construction as well.

Service and repairs on all major brands. System replacement and upgrades indoor Air Quality Products.

The City of Rockford now has a new mechanical and fuel gas codes that took effect January 2016. One of the biggest changes now has the requirement of load calculations report being used for a home when replacing furnaces are necessary. Using a professional company, like us here at Gilley's, will insure your new system is up to the current code standards.

Call us @ 815.962.1927 or send us an email

Call our office for more details at 815-962-1927

Spring Truck





Serving Northwest Illinois including Rockford, Belvidere, Cherry Valley, Loves Park, Machesney Park, Roscoe, Rockton, Byron, Pectatonica, Winnebago and more!