Janssen Heating Cooling Plumbing & Insulation
Janssen Heating Cooling Plumbing & Insulation is a HVAC provider serving Upper Alton, IL. Rated 5.0★ with 53 Google reviews. See services, review signals, and request a quote.
HVACUpper Alton, IL
On this page
Company overview
- TradeHVAC
- Service areaUpper Alton, IL
- Google rating5.0★ (53 reviews)
- Phone(618) 541-2415
- Address2 Terminal Dr, East Alton, IL 62024, USA
Services offered
- installation
- repair
- emergency
Photos
Photos from Janssen Heating Cooling Plumbing & Insulation, Bradley Polen
What customers say
“We needed someone to help us with our air conditioner and so many people recommended Steve, so we decided to try. Let’s just say we are keeping his number for future use! He fixed the issue, was super…”
“Steve replaced our hot water heater a few months ago! He did great work and told us exactly what our family needed. Highly recommend!!!”
“Steven came out diagnosed our problem very quickly(Sunday). The following day (Monday) came out with the parts and fixed the issue in a timely manner. Very personable and very responsive customer ser…”
“I really appreciated all of the time and effort given to help keep my old ac and air handler running for hopefully a bit longer. I am not financially prepared to buy an entirely new unit right now. Bu…”
Key highlights
Strengths
- Highly rated (5.0★ 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 Janssen Heating Cooling Plumbing & Insulation offer?
Janssen Heating Cooling Plumbing & Insulation provides: installation, repair, emergency. They serve residential and commercial customers in Upper Alton, IL.
What is Janssen Heating Cooling Plumbing & Insulation's rating?
Janssen Heating Cooling Plumbing & Insulation has a 5.0 out of 5 star rating based on 53 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 Janssen Heating Cooling Plumbing & Insulation 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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