65/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 565 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 565 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Best HVAC Contractors in Ansonia, CT (2026)
531 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Ansonia: Aire Serv of Southwest Connecticut, CR Score 65/100; 4.8★ from 565 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): A & S Nathan Heating & Cooling LLC, posts 24/7 hours; ranked #2 of 531.
- 17
Most-reviewed: Sippin Energy Products, 2,594 Google reviews at 4.9★, the most of 531 ranked; ranked #17.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
531 Ansonia HVAC contractors are ranked here by CR Score, from ten published factors. 130 are open 24/7, 248 open Saturdays and 180 open Sundays, based on posted hours. The median Google rating is 4.8★ across 531 rated businesses.
Top 10 HVAC contractors in Ansonia at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Aire Serv of Southwest Connecticut | 65 | 4.8★ (565) | Ansonia | 24/7 | Overall |
| 2 | A & S Nathan Heating & Cooling LLC | 65 | 4.8★ (446) | Ansonia | 24/7 | Emergencies |
| 3 | Aire Serv of Shelton | 64 | 4.8★ (347) | Ansonia | 24/7 | — |
| 4 | HL Bowman Inc Plumbing Heating & AC | 63 | 4.7★ (1,151) | Milford, 9 mi away | 24/7 | — |
| 5 | Edgerton, Inc. | 63 | 4.8★ (555) | Bethel, 9 mi away | 24/7 | — |
| 6 | Ward Heating and Cooling LLC | 63 | 5.0★ (240) | Bethel, 8 mi away | 24/7 | — |
| 7 | Hyper Fusion Heating & Cooling, LLC | 63 | 5.0★ (80) | Ansonia | 24/7 | — |
| 8 | Levco Oil & Propane | 63 | 4.7★ (590) | Trumbull, 8 mi away | 24/7 | — |
| 9 | Celco Heating & Air Conditioning | 62 | 4.7★ (861) | Bridgeport, 12 mi away | 24/7 | — |
| 10 | Air, Inc. | 62 | 4.8★ (692) | Branford, 14 mi away | 24/7 | — |
The 531 best HVAC contractors in Ansonia, 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.
Based in Ansonia
65/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.8★ from 446 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 446 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 34 Clifton Ave, Ansonia, CT 06401
Based in Ansonia
64/100CR ScoreRanked #3 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
Based in Milford, 9 mi away
63/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.7★ from 1,151 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 1,151 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 922 Bridgeport Ave, Milford, CT 06460
Based in Bethel, 9 mi away
63/100CR ScoreRanked #5 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
Based in Bethel, 8 mi away
63/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 240 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 240 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Ansonia
63/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 80 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 80 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Trumbull, 8 mi away
63/100CR ScoreRanked #8 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
Based in Bridgeport, 12 mi away
62/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.7★ from 861 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 861 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 467 Bishop Ave, Bridgeport, CT 06610
#10 Air, Inc.
Based in Branford, 14 mi away
62/100CR ScoreRanked #10 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
Based in Waterbury, 14 mi away
62/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 372 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 372 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 64 Westridge Dr, Waterbury, CT 06708
Based in New Milford, 23 mi away
61/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 969 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 969 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8 S Main St, New Milford, CT 06776
Based in Wallingford, 17 mi away
61/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.8★ from 601 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 601 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 21 N Plains Industrial Rd unit C, Wallingford, CT 06492
Based in Ansonia
61/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 32 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Southbury, 10 mi away
61/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 170 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 170 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1257 Southford Rd, Southbury, CT 06488
#16 Service Stars
Based in Danbury, 19 mi away
61/100CR ScoreRanked #16 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
Based in Bethel, 10 mi away
61/100CR ScoreRanked #17 because of its Google rating and review volume: 4.9★ from 2,594 Google reviews, the most in Ansonia.
- 4.9★ from 2,594 Google reviews
- Hours
- Mon–Fri 7 AM–4:30 PM · Sat–Sun closed
- Address
- 234 Main St, Monroe, CT 06468
Based in Naugatuck, 9 mi away
60/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 90 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 90 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 485 Cherry St, Naugatuck, CT 06770
Based in Middlebury, 11 mi away
60/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 115 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 115 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Bridgeport, 22 mi away
60/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 529 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 529 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Shelton, 3 mi away
60/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 62 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 62 Google reviews
- Hours
- Mon–Sun 6 AM–10 PM
- Address
- 97 Bridgeport Ave, Shelton, CT 06484
Based in Danbury, 19 mi away
60/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 2,252 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 2,252 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat 8 AM–12 PM · Sun closed
- Address
- 92 Sand Pit Rd, Danbury, CT 06810
Based in Danbury, 21 mi away
60/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 380 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 380 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 37A Padanaram Rd, Danbury, CT 06811
Based in Bridgeport, 12 mi away
60/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 86 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 86 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 54 Glendale Ave, Bridgeport, CT 06606
Based in Trumbull, 11 mi away
60/100CR ScoreRanked #25 because of its Google rating and review volume: 5.0★ from 570 Google reviews.
- 5.0★ from 570 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 90 Fresh Meadow Dr, Trumbull, CT 06611
HVAC contractors ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 531 ranked HVAC contractors here; the rest are on their profiles.
Also serving Ansonia
20 more HVAC contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Active Air LLC | 5.0★ (44) | 10 mi |
| Advanced Comfort Solutions | 5.0★ (13) | 7 mi |
| Air Duct Co LLC | 5.0★ (6) | In Ansonia |
| Climate Pros Heating & Cooling Corp | 5.0★ (16) | 9 mi |
| Comfort Zone Heating & Air Conditioning | 4.0★ (2) | 7 mi |
| Desirable Heating and Cooling | 4.0★ (2) | 4 mi |
| Direct Home Services | 4.7★ (268) | 21 mi |
| Dynamic Heating, Cooling & Geothermal | 4.8★ (262) | 24 mi |
| Falkowski Plumbing & Heating LLC | 5.0★ (1) | In Ansonia |
| Jacozzi Plumbing Heating & Cooling | 5.0★ (2) | 7 mi |
| Jim's Heating & Air Conditioning | 5.0★ (2) | 10 mi |
| M P Electric | 5.0★ (2) | 10 mi |
| Mobilio and Son HVAC | 4.7★ (112) | 16 mi |
| North East HVAC | 5.0★ (2) | 6 mi |
| POLO Plumbing & Heating LLC | 5.0★ (2) | 8 mi |
| Renz Heating & Air Conditioning LLC | 5.0★ (2) | 9 mi |
| Rick Sekelsky Plumbing & Heating | 5.0★ (2) | 4 mi |
| Roto-Rooter Plumbing & Water Cleanup | 4.9★ (421) | In Ansonia |
| SMR Heating And Cooling | 5.0★ (85) | 20 mi |
| West Shore Heating & Cooling | 5.0★ (2) | 9 mi |
How much do HVAC contractors cost in Ansonia?
National price ranges in USD, not adjusted for Ansonia. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| AC replacement | $3,887 | $5,978 | $8,073 | Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 2026 |
| Furnace replacement | $2,823 | $4,814 | $6,896 | Per system, installed; typical range of customer-reported jobs. US national range | October 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.
- Search the business name or license number on the Connecticut Department of Consumer Protection license lookup.
- Check that the status is active and the name matches the contract or truck.
- 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 Ansonia HVAC contractors
We scored 531 Ansonia 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.
| Factor | Weight | Computed from | In Ansonia data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
HVAC contractors in Ansonia: frequently asked questions
Who is the best HVAC contractor in Ansonia?
By CR Score, the highest-ranked HVAC contractor in Ansonia, CT is Aire Serv of Southwest Connecticut with a CR Score of 65/100. It has 4.8★ from 565 Google reviews. It is open 24/7. A & S Nathan Heating & Cooling LLC (#2) and Aire Serv of Shelton (#3) follow. We ranked 531 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Ansonia?
ContractorsRanked ranks 531 HVAC contractors serving Ansonia, CT. 8 of them are based in Ansonia; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which HVAC contractors in Ansonia are open 24/7?
130 ranked HVAC contractors in Ansonia post 24/7 hours. The highest-ranked are Aire Serv of Southwest Connecticut (#1), A & S Nathan Heating & Cooling LLC (#2) and Aire Serv of Shelton (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Ansonia work on weekends?
248 of 531 ranked HVAC contractors post Saturday hours and 180 post Sunday hours. The highest-ranked open Saturdays are Aire Serv of Southwest Connecticut (#1), A & S Nathan Heating & Cooling LLC (#2) and Aire Serv of Shelton (#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 Ansonia?
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 Ansonia. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Ansonia HVAC contractors have?
The median Google rating among 531 rated HVAC contractors in Ansonia is 4.8★, with a median of 21 reviews. Sippin Energy Products has the most, 2,594 reviews, and ranks #17. 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 Ansonia?
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 Ansonia
- October 2026: CR Scores recalculated for 531 hvac contractors serving Ansonia.
- October 2026: 4 duplicate listings merged.
More HVAC contractors and Ansonia pages
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- All contractors in Ansonia