Greg's Service Inc. Heating & Cooling
Greg's Service Inc. Heating & Cooling is a HVAC provider serving Alton, IL. Rated 4.9★ with 31 Google reviews. See services, review signals, and request a quote.
HVACAlton, IL
On this page
Company overview
- TradeHVAC
- Service areaAlton, IL
- Google rating4.9★ (31 reviews)
- Phone(618) 345-5921
- Address331 N Wood River Ave, Wood River, IL 62095, USA
Photos
Photos from Greg's Service Inc. Heating & Cooling
What customers say
“Trevor and Juan were very personable and thorough. Not sure if price for service call was reasonable or not due to not having received an invoice as yet. Ended up being a dirty heat censor and furnace…”
“The guys at Greg’s are the best. They came out in April to replace my fan motor, Gabriel was very friendly and professional and talked me through my options. I called them today to check something and…”
“First let me say I love Gabriel and Dominique, For 2 wks I had no heat ,my blower went out,called and dealt with Barrett 's I kept getting the run around for that long,called Greg's was there in 10 m…”
“These guys are awesome! They are professional and honest. Always timely with responses to HVAC problems and never try to upsell.”
“Trevor and his partner were not good. They were excellent six star instead of five star. They’re very professional and courteous and they looked out to make sure that the house stayed clean. They are …”
Key highlights
Strengths
- Highly rated (4.9★ average)
Things to ask
- Confirm availability for your area and timeline
- Ask about warranty terms on parts and labor
- Request a written estimate before work begins
- Ask about payment plans or financing
Explore nearby research
Frequently Asked Questions
What services does Greg's Service Inc. Heating & Cooling offer?
Greg's Service Inc. Heating & Cooling provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Alton, IL.
What is Greg's Service Inc. Heating & Cooling's rating?
Greg's Service Inc. Heating & Cooling has a 4.9 out of 5 star rating based on 31 Google reviews.
Is this company licensed in Illinois?
All listed providers have a verified Illinois contractor license at time of publication. You can verify on the Illinois Department of Financial and Professional Regulation (state business registration) plus municipal HVAC licensing (e.g. City of Chicago Department of Buildings) lookup at https://online-dfpr.micropact.com/Lookup/LicenseLookup.aspx.
Does Greg's Service Inc. Heating & Cooling offer emergency service?
Contact them directly to ask about emergency availability and after-hours service.
How do I request a quote?
Use the CTA below to submit your ZIP. You can message this company alongside two or three other local pros for easy comparison.
Licensing verified 2026-04-22. Reviews refreshed 2026-04-22.
Licensing data: Illinois Department of Financial and Professional Regulation (state business registration) plus municipal HVAC licensing (e.g. City of Chicago Department of Buildings) · Company data: verified business records + Google Business profile
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