Den-Son Inc. Cooling & Heating
Den-Son Inc. Cooling & Heating is a HVAC provider serving Alton, IL. Rated 4.8★ with 164 Google reviews. See services, review signals, and request a quote.
HVACAlton, IL
On this page
Company overview
- TradeHVAC
- Service areaAlton, IL
- Google rating4.8★ (164 reviews)
- Phone(618) 372-8375
- Address104 E Center St, Brighton, IL 62012, USA
Photos
Photos from Den-Son Inc. Cooling & Heating, Ron Perich, sas sas
What customers say
“Unfortunately, I woke up with my furnace not working. After calling around to multiple HVAC companies, I was left in the dark waiting for call backs. When I called Den-Son, they immediately gave me an…”
“Update: It's been about 10 months with our new unit and we've just gone through the first winter and summer. A couple of thoughts on my particular set up. First, I probably could have gone with the A…”
“DenSon was great to work with me. They promptly returned phone calls and sending servicemen out to install a new heater and AC unit. They also helped me get insurance to pay for the repair. They are t…”
“In March of 2025 We pre-paid Den-son for a yearly service (as we have previously done) but this year we DID NOT RECEIVE our prepaid service. We had to call another HVAC company to take care of ou…”
Key highlights
Strengths
- Highly rated (4.8★ average)
- Large review volume (164 reviews)
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 Den-Son Inc. Cooling & Heating offer?
Den-Son Inc. Cooling & Heating provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Alton, IL.
What is Den-Son Inc. Cooling & Heating's rating?
Den-Son Inc. Cooling & Heating has a 4.8 out of 5 star rating based on 164 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 Den-Son Inc. Cooling & Heating 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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