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

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.

Call us @ 815.962.1927 or send us an email




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