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Business ProfileHVAC Companies in Rockford, Illinois

Gilley's Heating & Air Conditioning

Gilley's Heating & Air Conditioning

Gilley's Heating & Air Conditioning began as a heating business in 1985 and serves Rockford. Its residential work covers heating, cooling and plumbing.

Last Updated October 2, 2026.

Business Highlights
  • Gilley's is family-owned and locally managed.
  • Gilley's is licensed and insured for local code requirements.
  • Gilley's is an American Standard certified representative.
  • Gilley's technicians are professionally trained, background-checked and certified.

Service Area

Rockford, Loves Park, Machesney Park, Belvidere, Cherry Valley and surrounding Illinois communities.

Active Business Listing

Gilley's Heating & Air Conditioning is one of 10 HVAC companies ProsGrade lists in Rockford, Illinois.

Active
Public local listing
Listing details

8 services listed, including Heating, Cooling and Heat pumps and boilers. Open 24 hours, 7 days a week. Rated 4.6 from 45 reviews.

  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

How Gilley's Heating & Air Conditioning compares with the other 9 HVAC companies on ProsGrade in Rockford, using public Google ratings and review counts.

  • One of 10 Rockford HVAC companies on ProsGrade.

Trust Signals

Open 24 hours for scheduling and urgent HVAC calls.

Services Covered

8 services
  • HeatingFurnace repair, replacement and installation.
  • CoolingAC repair, replacement and installation.
  • Heat pumps and boilersEmergency repairs.
  • HVAC installationsDuctless mini split installations.
  • Indoor air qualityUV lights, air purifiers, dehumidifiers and humidity control systems.
  • Maintenance and Comfort ClubBi-annual system checks, priority scheduling and exclusive discounts.
  • Plumbing repairsFaucets, pipes, drains and water heaters.
  • Plumbing installationsFaucets, sinks, toilets, showers, tubs, and tank and tankless water heaters.

Reviews

What customers say

Customers praise courteous technicians and prompt repairs. Two customers specifically valued the lack of pushy or unnecessary upselling, while one customer received thermostat-battery guidance that resolved the issue without a charge.

Customer Reviews

Teetah

I was extremely impressed with the Gilley's team. They took the time to listen to the challenge I was having with my furnace and sent a skilled technician. My issue was resolved quickly. Everyone was kind, friendly and professional, with no pushy sales/upselling. Just honest, hard-working people that care to do a good job and do it right. I'm grateful to have found them. Many sincere thanks!!
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Pamela Littrell

Woke up at 2:30 a.m. freezing. My house was 65 degrees. The furnace wouldn't come on & it's right at the end of its life expectancy. I called Gilly's and a serviceman called me back in less than a minute. He had me check my fairly new thermostat which wasn't on either & had me put new batteries in it. Thank God that was all it was & he didn't' charge me.
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Courtney Bauman

Quick response, nice folks, and honest! Fixed my issue on a Saturday night and got my house cooled down!!! I realized tonight that my house wasn’t cooling down and that my outdoor unit wasn’t turning on. I was worried I wouldn’t be able to find someone to make a service call past 7pm on a Saturday. But Matt called me back within a few minutes and said he would be able to make it out in less than an hour. Sure enough, he showed up on time! He diagnosed my issue quickly and was able to fix it for me right there. Super nice and honest guy!!! I appreciated that she showed me what the problem was and didn’t try to upsell me on anything I didn’t need. He was kind and efficient. I read a bunch of reviews when I need something fixed at home to make sure I call the right people. So, I’m leaving one of my own to help out the next person who finds themself in my situation!
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Alastor Naruz

I have a mobile home furnace and had been told by a couple other businesses that they will not perform any work on mobile home furnaces which put me into a bit of a worrisome slump. Thankfully, I contacted Gilley's and they stated that they had no issue with performing work on mobile home furnaces and would be happy to help with my issue, which was the combustion air switch motor dying out on me! I only had to wait a day for an appointment which was super convenient especially with the winter season coming up fast! Justin was the servicer for my furnace and he was incredibly professional, super polite and fun to chat with while he tackled looking over and promptly fixing the issue! We were both thankful and impressed that the repair was quick and easy with no hassle. Gilley's is also incredibly affordable with zero surprise charges whatsoever which is a huge plus! I absolutely recommend going with Gilley's for any sort of service repair that you need! You won't be disappointed! :) Thank you so much, Justin & the Gilley's crew! You all rock!
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Sheila

Matt and Jorge installed our new furnace on Nov 30, 2023. My husband said they were very courteous and efficient They cleaned up the area after they finished the job and gave helpful advice. It’s not every day that you run into technicians who enjoy what they do and have such pleasant conversations with customers. God bless you both!
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Frequently Asked Questions

Does Gilley's offer emergency HVAC service?

Yes. Emergency service is available 24/7.

What warranty does Gilley's provide on new system installations?

The company states that every system it installs includes a 10-year parts warranty.

Does Gilley's offer free estimates for equipment replacements and new installations?

The company offers free estimates for replacements and new installations.

How does Gilley's choose an AC system's SEER rating?

It performs load calculations to match the rating to the home's size and usage patterns.