Greg Hahn Heating & Air Conditioning
Greg Hahn Heating & Air Conditioning is a HVAC provider serving Decatur, IL. Rated 4.8★ with 13 Google reviews. See services, review signals, and request a quote.
HVACDecatur, IL
On this page
Company overview
- TradeHVAC
- Service areaDecatur, IL
- Google rating4.8★ (13 reviews)
- Phone(217) 428-4545
- Address4246 W Main St, Decatur, IL 62522, USA
Photos
Photos from Greg Hahn Heating & Air Conditioning
What customers say
“Greg Hahn is a rockstar…we can’t express our gratitude enough! Another business installed a new furnace nineteen months ago and it never performed properly. Yesterday, that company informed us that th…”
“Greg is the best. Integrity matters, I had a person come out and provide an estimate for repairs. It was $2,500.00 for what this person stated was wrong. I called Greg he came out and checked the unit…”
“We had issues with our compressor unit not keeping up. The service we received was excellent, prompt, and friendly. I have always used Hahn heating and air for these reasons. if you have any HVAC need…”
“Great company. Easy to work with. They take care of their customers”
“Helped us with cleaning out air conditioning also furnace very nice job”
Key highlights
Strengths
- Highly rated (4.8★ 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 Hahn Heating & Air Conditioning offer?
Greg Hahn Heating & Air Conditioning provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Decatur, IL.
What is Greg Hahn Heating & Air Conditioning's rating?
Greg Hahn Heating & Air Conditioning has a 4.8 out of 5 star rating based on 13 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 Hahn Heating & Air Conditioning 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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