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Carnot HeatingHVAC contractor in Groton, CT

Carnot Heating is an HVAC contractor in Groton, CT, ranked #8 of 131 HVAC contractors in Groton and rated 4.6 from 9 Google reviews. Open 24 hours a day, 7 days a week.

Groton, CTUpdated 0 paid placements in any rankingHow we rank

Call (860) 917-5879Website ↗

Key facts

Key facts about Carnot Heating
Phone(860) 917-5879
Websitecarnotheating.com
HoursOpen 24 hours, 7 days a week
Google rating4.6 from 9 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Groton and 11 towns within 25 miles: Montville Center, Norwich, Conning Towers-Nautilus Park, Ledyard, New London, Waterford, Preston City, Windham, East Haddam, Hebron and Willimantic.

Based in Groton, CTView on map

Opening hours

Opening hours for Carnot Heating
DayHours
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours
  • Open 24/7
  • Open evenings — no
  • Open Saturdays
  • Open Sundays
  • Emergency service

Typical heating and cooling prices

Typical heating and cooling prices
JobLowTypicalHigh
AC replacementPer system, installed (unit plus labor); typical range of customer-reported jobs. US national range$3,887$5,978$8,073
Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range$2,823$4,814$6,896

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Compare nearby HVAC contractors

Carnot Heating compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Carnot Heating (this business)—594.6 (9)—YesYes
South Shore Heating & Cooling Inc#6604.9 (564)—NoNo17.9 mi
Duncklee Cooling & Heating Inc#7604.7 (256)—NoNo15.6 mi
HVAC Restorations LLC.#9595.0 (33)—YesYes4.9 mi

See all 131 ranked HVAC contractors in Groton

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.6from 9 Google reviews

Hired Carnot Heating? Write a review

Questions about Carnot Heating

How is Carnot Heating ranked in Groton?

Carnot Heating is ranked #8 of 131 HVAC contractors in Groton by CR Score, with 59 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

What are Carnot Heating’s hours?

Carnot Heating is open 24 hours a day, 7 days a week. Its listed hours are Open 24 hours, 7 days a week. On Saturdays it is open Open 24 hours, and on Sundays Open 24 hours. Hours come from the business listing; holiday hours may differ.

What areas does Carnot Heating serve?

Serves Groton and 11 towns within 25 miles: Montville Center, Norwich, Conning Towers-Nautilus Park, Ledyard, New London, Waterford, Preston City, Windham, East Haddam, Hebron and Willimantic. The list is based on the business's location and the usual service radius for heating and cooling. Confirm your address is covered when you call.

What do Google reviews say about Carnot Heating?

Carnot Heating has a rating of 4.6 from 9 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Carnot Heating?

Call Carnot Heating on (860) 917-5879. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.

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