762 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in East Norwalk: Astacio Heating, Cooling, Plumbing & Electrical, CR Score 64/100; 4.8★ from 1,998 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Air Solutions, Inc., posts 24/7 hours; ranked #2 of 762.
Most-reviewed: Universe Home Services, 6,771 Google reviews at 4.8★, the most of 762 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
762 East Norwalk HVAC contractors are ranked here by CR Score, from ten published factors. 229 are open 24/7, 433 open Saturdays and 306 open Sundays, based on posted hours. The median Google rating is 4.8★ across 762 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Astacio Heating, Cooling, Plumbing & Electrical | 64 | 4.8★ (1,998) | Norwalk, 1 mi away | Sat · Sun · Evenings | Overall |
| 2 | Air Solutions, Inc. | 62 | 4.8★ (718) | Stamford, 9 mi away | 24/7 | Emergencies |
| 3 | Aire Serv of Southwest Connecticut | 62 | 4.8★ (565) | Ansonia, 8 mi away | 24/7 | — |
| 4 | EXTRAVE Heating & Cooling | 62 | 5.0★ (209) | Stamford, 7 mi away | 24/7 | — |
| 5 | Servco Oil & Propane | 62 | 5.0★ (133) | Darien, 5 mi away | 24/7 | — |
| 6 | Universe Home Services | 61 | 4.8★ (6,771) | Farmingdale, 24 mi away | 24/7 | Most reviews |
| 7 | ENCON Heating and Air Conditioning | 61 | 4.9★ (211) | Stamford, 7 mi away | 24/7 | — |
| 8 | Gault Energy & Home Solutions Gault Stone & Landscape Supplies | 61 | 4.8★ (1,206) | Westport, 2 mi away | Sat | — |
| 9 | ENCON Heating and Air Conditioning | 61 | 4.9★ (529) | Bridgeport, 14 mi away | 24/7 | — |
| 10 | Climate Care, LLC | 61 | 4.6★ (171) | Norwalk, 2 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 in East Norwalk
Based in Norwalk, 1 mi away
Ranked #1 because of its Google rating and trade focus: 4.8★ from 1,998 Google reviews, listed on Google as “HVAC contractor”.
Based in Stamford, 9 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 718 Google reviews, listed on Google as “HVAC contractor”.
Based in Ansonia, 8 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 565 Google reviews, listed on Google as “HVAC contractor”.
Based in Stamford, 7 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 209 Google reviews, listed on Google as “HVAC contractor”.
Based in Darien, 5 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 133 Google reviews, listed on Google as “HVAC contractor”.
Based in Farmingdale, 24 mi away
Ranked #6 because of its Google rating and review volume: 4.8★ from 6,771 Google reviews, the most in East Norwalk.
Based in Stamford, 7 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 211 Google reviews, listed on Google as “HVAC contractor”.
Based in Westport, 2 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 1,206 Google reviews, listed on Google as “HVAC contractor”.
Based in Bridgeport, 14 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 529 Google reviews, listed on Google as “HVAC contractor”.
Based in Norwalk, 2 mi away
Ranked #10 because of its Google rating and trade focus: 4.6★ from 171 Google reviews, listed on Google as “HVAC contractor”.
Based in Stamford, 6 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 179 Google reviews, listed on Google as “HVAC contractor”.
Based in White Plains, 20 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 1,821 Google reviews, listed on Google as “HVAC contractor”.
Based in Bridgeport, 14 mi away
Ranked #13 because of its Google rating and trade focus: 4.7★ from 861 Google reviews, listed on Google as “HVAC contractor”.
Based in Stamford, 7 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 101 Google reviews, listed on Google as “Heating contractor”.
Based in Greenburgh, 22 mi away
Ranked #15 because of its Google rating and trade focus: 4.7★ from 3,366 Google reviews, listed on Google as “HVAC contractor”.
Based in Greenwich, 15 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 297 Google reviews, listed on Google as “Heating contractor”.
Based in Eastchester, 24 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 1,440 Google reviews, listed on Google as “HVAC contractor”.
Based in Darien, 4 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 50 Google reviews, listed on Google as “HVAC contractor”.
Based in Milford, 18 mi away
Ranked #19 because of its Google rating and trade focus: 4.7★ from 1,151 Google reviews, listed on Google as “HVAC contractor”.
Based in Port Jefferson Station, 23 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 633 Google reviews, listed on Google as “HVAC contractor”.
Based in Ridgefield, 12 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 212 Google reviews, listed on Google as “HVAC contractor”.
Based in Bethel, 18 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 555 Google reviews, listed on Google as “HVAC contractor”.
Based in Trumbull, 16 mi away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 590 Google reviews, listed on Google as “HVAC contractor”.
Based in Port Chester, 16 mi away
Ranked #24 because of its Google rating and trade focus: 4.5★ from 1,257 Google reviews, listed on Google as “HVAC contractor”.
Based in Greenburgh, 21 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 549 Google reviews, listed on Google as “HVAC contractor”.
#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 762 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 |
|---|---|---|
| A1 Heating and Air Conditioning | 4.9★ (125) | 21 mi |
| Accurate Heating & Cooling | 3.0★ (2) | 6 mi |
| Active Air LLC | 5.0★ (44) | 13 mi |
| Anthony Valenti heating&cooling | 5.0★ (2) | 2 mi |
| Around The Clock Air conditioning & Heating,inc. | 5.0★ (2) | 10 mi |
| Bridgeport HVAC | 3.0★ (2) | 13 mi |
| C&C Service | 4.4★ (45) | 9 mi |
| Comfortable Environments, LLC. | 5.0★ (2) | 14 mi |
| County Comfort Services | 4.7★ (420) | 25 mi |
| Father & Son Plumbing & Heating | 3.0★ (2) | 2 mi |
| Hilltop Plumbing & Heating | 3.0★ (2) | 1 mi |
| JP's Plumbing and Heating, LLC | 4.5★ (2) | 12 mi |
| K2 Heating & Air Conditioning | 4.8★ (328) | 24 mi |
| Master Mechanical LLC | 4.5★ (2) | 13 mi |
| Pdq Plumbing & Heating | 5.0★ (2) | 9 mi |
| Procaccini Plumbing Heating | 5.0★ (2) | 12 mi |
| Sunray Services - Air Conditioning and Heating | 4.5★ (494) | 22 mi |
| Tyler Heating, Air Conditioning, Refrigeration LLC | 4.7★ (570) | 14 mi |
| Warco Plumbing & Heating Inc | 5.0★ (2) | 6 mi |
| WBF Air Conditioning & Heating | 3.0★ (2) | 8 mi |
National price ranges in USD, not adjusted for East Norwalk. 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 762 East Norwalk 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 East Norwalk 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 |