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Best HVAC Contractors in Naugatuck, CT (2026)

598 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Naugatuck: American Heating Air Conditioning Service, CR Score 64/100; 4.9★ from 372 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Ward Heating and Cooling LLC, posts 24/7 hours; ranked #2 of 598.

  3. 5

    Most-reviewed: Call The Bee, 2,959 Google reviews at 4.8★, the most of 598 ranked; ranked #5.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

598 Naugatuck HVAC contractors are ranked here by CR Score, from ten published factors. 137 are open 24/7, 271 open Saturdays and 193 open Sundays, based on posted hours. The median Google rating is 4.8★ across 598 rated businesses.

Most of this list also appears on the HVAC contractors in Waterbury ranking. See HVAC contractors in Waterbury

Top 10 HVAC contractors in Naugatuck at a glance

Top 10 HVAC contractors in Naugatuck at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1American Heating Air Conditioning Service644.9★ (372)Waterbury, 4 mi away24/7Overall
2Ward Heating and Cooling LLC635.0★ (240)Bethel, 7 mi away24/7Emergencies
3Total Mechanical Systems634.7★ (2,607)Plainville, 17 mi away24/7—
4E Elving Heating and Cooling LLC624.9★ (90)Naugatuck24/7—
5Call The Bee624.8★ (2,959)Farmington, 21 mi away24/7Most reviews
6Ryan F. Murphy Heating & Cooling LLC625.0★ (969)New Milford, 20 mi away24/7—
7A & S Nathan Heating & Cooling LLC624.8★ (446)Ansonia, 11 mi away24/7—
8Aiello Home Services- Plumbing, Heating, AC, Electrical & Drain Cleaning624.8★ (601)Wallingford, 12 mi away24/7—
9Ductworks HVAC Services624.8★ (695)Bristol, 14 mi away24/7—
10Superior HVAC & Tank Removal | Residential Heating & Cooling Contractor624.9★ (277)Waterbury, 4 mi away24/7—

The 598 best HVAC contractors in Naugatuck, ranked

Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  5. #5 Call The Bee

    Based in Farmington, 21 mi away

    62/100CR Score

    Ranked #5 because of its Google rating and review volume: 4.8★ from 2,959 Google reviews, the most in Naugatuck.

    • 4.8★ from 2,959 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    7 Eastview Dr, Farmington, CT 06032
    View profile for Call The Bee(860) 272-6402

  11. #11 Aire Serv of Shelton

    Based in Ansonia, 11 mi away

    62/100CR Score

    Ranked #11 because of its Google rating and trade focus: 4.8★ from 347 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 347 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    41 Clifton Ave, Ansonia, CT 06401
    View profile for Aire Serv of Shelton(203) 717-9527

  15. #15 Edgerton, Inc.

    Based in Bethel, 15 mi away

    61/100CR Score

    Ranked #15 because of its Google rating and trade focus: 4.8★ from 555 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 555 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    786 Main St, Monroe, CT 06468
    View profile for Edgerton, Inc.(203) 268-6279

  18. #18 Air, Inc.

    Based in Branford, 19 mi away

    61/100CR Score

    Ranked #18 because of its Google rating and trade focus: 4.8★ from 692 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 692 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    171 Short Beach Rd, Branford, CT 06405
    View profile for Air, Inc.(203) 871-0801

  23. #23 Valiant Energy Solutions

    Based in Waterbury, 4 mi away

    60/100CR Score

    Ranked #23 because of its Google rating and trade focus: 4.8★ from 1,454 Google reviews, listed on Google as “Air conditioning contractor”.

    • 4.8★ from 1,454 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    165 Railroad Hill St, Waterbury, CT 06708
    View profile for Valiant Energy Solutions(833) 603-4872

  24. #24 Service Stars

    Based in Danbury, 20 mi away

    60/100CR Score

    Ranked #24 because of its Google rating and trade focus: 4.9★ from 1,350 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 1,350 Google reviews
    Hours
    Mon–Sun 7:30 AM–10 PM
    Address
    43C Beaver Brook Rd, Danbury, CT 06810
    View profile for Service Stars(475) 242-2933

  25. #25 Levco Oil & Propane

    Based in Trumbull, 18 mi away

    60/100CR Score

    Ranked #25 because of its Google rating and trade focus: 4.7★ from 590 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 590 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    55 Merritt Blvd, Trumbull, CT 06611
    View profile for Levco Oil & Propane(203) 533-8249

HVAC contractors ranked #26 to #29

#1 to #25 are shown in full above. Here are #26 to #29, in CR Score order; each links to its profile. We publish the top 29 of 598 ranked HVAC contractors here; the rest are on their profiles.

HVAC contractors in Naugatuck, ranks 26 to 29
RankBusinessCR ScoreGoogle ratingDistance
26Dynamic Heating, Cooling & Geothermal604.8★ (262)15 mi
27Mobilio and Son HVAC604.7★ (112)8 mi
29Celco Heating & Air Conditioning604.7★ (861)21 mi

How much do HVAC contractors cost in Naugatuck?

National price ranges in USD, not adjusted for Naugatuck. Each row names its basis and the month we checked it.

How much do HVAC contractors cost in Naugatuck?
JobLowTypicalHighBasisChecked
AC replacement$3,887$5,978$8,073Per system, installed (unit plus labor); typical range of customer-reported jobs. US national rangeOctober 2026
Furnace replacement$2,823$4,814$6,896Per system, installed; typical range of customer-reported jobs. US national rangeOctober 2026

How to check an HVAC contractor's license in Connecticut

In Connecticut, Connecticut Department of Consumer Protection licenses Heating, piping, cooling and sheet metal licenses.

  1. Search the business name or license number on the Connecticut Department of Consumer Protection license lookup.
  2. Check that the status is active and the name matches the contract or truck.
  3. Ask for proof of insurance before work starts.

No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.

Guide checked October 2026. How we verify licenses

When to hire an HVAC contractor in Connecticut

In Connecticut, furnace and heat pump calls peak in the coldest winter weeks and AC calls in summer heat waves. Spring and fall are the easiest times to book maintenance or a replacement.

How we ranked Naugatuck HVAC contractors

We scored 598 Naugatuck HVAC contractors on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Naugatuck data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

HVAC contractors in Naugatuck: frequently asked questions

Who is the best HVAC contractor in Naugatuck?

By CR Score, the highest-ranked HVAC contractor in Naugatuck, CT is American Heating Air Conditioning Service with a CR Score of 64/100. It has 4.9★ from 372 Google reviews. It is open 24/7. Ward Heating and Cooling LLC (#2) and Total Mechanical Systems (#3) follow. We ranked 598 HVAC contractors on ten factors, last updated October 22, 2026.

How many HVAC contractors are there in Naugatuck?

ContractorsRanked ranks 598 HVAC contractors serving Naugatuck, CT. 3 of them are based in Naugatuck; the rest serve it from nearby towns. Counts are as of October 2026.

Which HVAC contractors in Naugatuck are open 24/7?

137 ranked HVAC contractors in Naugatuck post 24/7 hours. The highest-ranked are American Heating Air Conditioning Service (#1), Ward Heating and Cooling LLC (#2) and Total Mechanical Systems (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Naugatuck work on weekends?

271 of 598 ranked HVAC contractors post Saturday hours and 193 post Sunday hours. The highest-ranked open Saturdays are American Heating Air Conditioning Service (#1), Ward Heating and Cooling LLC (#2) and Total Mechanical Systems (#3). Posted hours are office hours; crews may book weekend jobs separately.

How do I check an HVAC contractor's license in Connecticut?

In Connecticut, Connecticut Department of Consumer Protection handles licensing and covers Heating, piping, cooling and sheet metal licenses. Search the business or license number at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx.

How much does ac replacement cost in Naugatuck?

AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Naugatuck. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Naugatuck HVAC contractors have?

The median Google rating among 598 rated HVAC contractors in Naugatuck is 4.8★, with a median of 22 reviews. Call The Bee has the most, 2,959 reviews, and ranks #5. We adjust ratings for review count, so a few five-star reviews cannot top the list.

When is the best time to hire an HVAC contractor in Naugatuck?

In Connecticut, furnace and heat pump calls peak in the coldest winter weeks and AC calls in summer heat waves. Spring and fall are the easiest times to book maintenance or a replacement.

Update log for Naugatuck

  1. October 2026: CR Scores recalculated for 598 hvac contractors serving Naugatuck.
  2. October 2026: 3 duplicate listings merged.

More HVAC contractors and Naugatuck pages

Other trades in Naugatuck