Hefferon Heating & Cooling LLC
Hefferon Heating & Cooling LLC is a HVAC provider serving Danbury, CT. Rated 4.9★ with 390 Google reviews. See services, review signals, and request a quote.
HVACDanbury, CT
On this page
Company overview
- TradeHVAC
- Service areaDanbury, CT
- Google rating4.9★ (390 reviews)
- Phone(203) 790-8826
- Address37A Padanaram Rd, Danbury, CT 06811, USA
Photos
Photos from Hefferon Heating & Cooling LLC, brianne tompkins, Peter Pastor, J W
What customers say
“I highly recommend Hefferon to anyone looking for a reputable company with the deep expertise needed to deliver a perfectly designed, long-term heating and cooling solution for your homes needs! And …”
“We've been using Hefferon for several years to maintain our HVAC unit and have always been pleased with their service. But now, after 20+ years, our system needed to be replaced. Ernie Hefferon prov…”
“We have been customers of Hefferon for almost 20 years. They just installed a new HVAC system and duct work for us. Every step of the project went smoothly from estimate to inspections. The crews were…”
“Hefferon was Great! Came out same day when had no heat to resolve some issues with my propane furnace. Evan the Technician that visited was friendly, knowledgeable and helpful in letting me know any o…”
Key highlights
Strengths
- Highly rated (4.9★ average)
- Large review volume (390 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 Hefferon Heating & Cooling LLC offer?
Hefferon Heating & Cooling LLC provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Danbury, CT.
What is Hefferon Heating & Cooling LLC's rating?
Hefferon Heating & Cooling LLC has a 4.9 out of 5 star rating based on 390 Google reviews.
Is this company licensed in Connecticut?
All listed providers have a verified Connecticut contractor license at time of publication. You can verify on the Connecticut Department of Consumer Protection (DCP) — Occupational and Professional Licensing Division lookup at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx.
Does Hefferon Heating & Cooling LLC 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 2026-04-23. Reviews refreshed 2026-04-23.
Licensing data: Connecticut Department of Consumer Protection (DCP) — Occupational and Professional Licensing Division · Company data: verified business records + Google Business profile
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