569 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Stratford: Celco Heating & Air Conditioning, CR Score 65/100; 4.7★ from 861 Google reviews; open 24/7.
Best for emergencies (open 24/7): HL Bowman Inc Plumbing Heating & AC, posts 24/7 hours; ranked #2 of 569.
Most-reviewed: Sippin Energy Products, 2,594 Google reviews at 4.9★, the most of 569 ranked; ranked #18.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
569 Stratford HVAC contractors are ranked here by CR Score, from ten published factors. 156 are open 24/7, 303 open Saturdays and 216 open Sundays, based on posted hours. The median Google rating is 4.8★ across 569 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Celco Heating & Air Conditioning | 65 | 4.7★ (861) | Bridgeport, 1 mi away | 24/7 | Overall |
| 2 | HL Bowman Inc Plumbing Heating & AC | 65 | 4.7★ (1,151) | Milford, 4 mi away | 24/7 | Emergencies |
| 3 | Levco Oil & Propane | 64 | 4.7★ (590) | Trumbull, 4 mi away | 24/7 | — |
| 4 | Aire Serv of Southwest Connecticut | 63 | 4.8★ (565) | Ansonia, 9 mi away | 24/7 | — |
| 5 | A & S Nathan Heating & Cooling LLC | 62 | 4.8★ (446) | Ansonia, 11 mi away | 24/7 | — |
| 6 | Edgerton, Inc. | 62 | 4.8★ (555) | Bethel, 13 mi away | 24/7 | — |
| 7 | Hands On Heating Inc. | 62 | 4.9★ (59) | Stratford | 24/7 | — |
| 8 | Leak Off Plumbing & Heating | 62 | 5.0★ (86) | Bridgeport, 5 mi away | 24/7 | — |
| 9 | Astacio Heating, Cooling, Plumbing & Electrical | 62 | 4.8★ (1,998) | Norwalk, 15 mi away | Sat · Sun · Evenings | — |
| 10 | Aire Serv of Shelton | 62 | 4.8★ (347) | Ansonia, 11 mi away | 24/7 | — |
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.
Ranked #1 because of its Google rating and trade focus: 4.7★ from 861 Google reviews, listed on Google as “HVAC contractor”.
Based in Milford, 4 mi away
Ranked #2 because of its Google rating and trade focus: 4.7★ from 1,151 Google reviews, listed on Google as “HVAC contractor”.
Based in Trumbull, 4 mi away
Ranked #3 because of its Google rating and trade focus: 4.7★ from 590 Google reviews, listed on Google as “HVAC contractor”.
Based in Ansonia, 9 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 565 Google reviews, listed on Google as “HVAC contractor”.
Based in Ansonia, 11 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 446 Google reviews, listed on Google as “HVAC contractor”.
Based in Bethel, 13 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 555 Google reviews, listed on Google as “HVAC contractor”.
Based in Stratford
Ranked #7 because of its Google rating and trade focus: 4.9★ from 59 Google reviews, listed on Google as “Heating contractor”.
Based in Bridgeport, 5 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 86 Google reviews, listed on Google as “HVAC contractor”.
Based in Norwalk, 15 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 1,998 Google reviews, listed on Google as “HVAC contractor”.
Based in Ansonia, 11 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 347 Google reviews, listed on Google as “HVAC contractor”.
Based in Port Jefferson Station, 20 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 633 Google reviews, listed on Google as “HVAC contractor”.
Based in Stratford
Ranked #12 because of its Google rating and trade focus: 4.7★ from 570 Google reviews, listed on Google as “HVAC contractor”.
Based in Branford, 16 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 692 Google reviews, listed on Google as “HVAC contractor”.
Based in Coram, 20 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 439 Google reviews, listed on Google as “HVAC contractor”.
Based in Bridgeport, 1 mi away
Ranked #15 because of its Google rating and trade focus: 4.2★ from 415 Google reviews, listed on Google as “HVAC contractor”.
Based in Bridgeport, 20 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 529 Google reviews, listed on Google as “HVAC contractor”.
Based in Trumbull, 5 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 111 Google reviews, listed on Google as “HVAC contractor”.
Based in Bethel, 11 mi away
Ranked #18 because of its Google rating and review volume: 4.9★ from 2,594 Google reviews, the most in Stratford.
Based in Port Jefferson Station, 19 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 582 Google reviews, listed on Google as “HVAC contractor”.
Based in Milford, 4 mi away
Ranked #20 because of its Google rating and review volume: 5.0★ from 1,157 Google reviews.
Based in Darien, 14 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 133 Google reviews, listed on Google as “HVAC contractor”.
Based in Bethel, 18 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 240 Google reviews, listed on Google as “HVAC contractor”.
Based in Milford, 4 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 817 Google reviews, listed on Google as “HVAC contractor”.
Based in Danbury, 22 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 1,350 Google reviews, listed on Google as “HVAC contractor”.
Based in Trumbull, 10 mi away
Ranked #25 because of its Google rating and review volume: 5.0★ from 570 Google reviews.
#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 569 ranked HVAC contractors here; the rest are on their profiles.
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 |
|---|---|---|
| Affordable Heating and Air Conditioning, LLC. | 2.4★ (23) | In Stratford |
| Airco HVAC - Air Conditioning and Heating | 5.0★ (38) | 17 mi |
| Apple Oil | 3.6★ (84) | 1 mi |
| Bridgeport HVAC | 3.0★ (2) | 2 mi |
| Climate Pros Heating & Cooling Corp | 5.0★ (16) | 7 mi |
| Desirable Heating and Cooling | 4.0★ (2) | 9 mi |
| E Elving Heating and Cooling LLC | 4.9★ (90) | 20 mi |
| FAIRCONN Plumbing And Heating LLC | 5.0★ (101) | 22 mi |
| Fast Dryer Vent Cleaning Services Stratford, CT | 4.2★ (6) | In Stratford |
| Green Mechanicals Heating & Cooling LLC | 4.8★ (179) | 21 mi |
| Hydro Mechanical, LLC | 4.9★ (13) | 5 mi |
| M P Electric | 5.0★ (2) | In Stratford |
| North East HVAC | 5.0★ (2) | 8 mi |
| Pdq Plumbing & Heating | 5.0★ (2) | 6 mi |
| Procaccini Plumbing Heating | 5.0★ (2) | 10 mi |
| RDR Air | In Stratford | |
| Renz Heating & Air Conditioning LLC | 5.0★ (2) | 3 mi |
| Sunray Services - Air Conditioning and Heating | 4.5★ (494) | 23 mi |
| Thomas Roberge Plumbing & Heating | In Stratford | |
| Trovarelli Plumbing & Heating, LLC | 5.0★ (1) | In Stratford |
National price ranges in USD, not adjusted for Stratford. 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 |
In Connecticut, Connecticut Department of Consumer Protection licenses Heating, piping, cooling and sheet metal licenses.
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
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.
We scored 569 Stratford 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 Stratford 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 |