64/100CR Score
Ranked #1 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
Best HVAC Contractors in Shelton, CT (2026)
506 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Shelton: A & S Nathan Heating & Cooling LLC, CR Score 64/100; 4.8★ from 446 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Aire Serv of Shelton, posts 24/7 hours; ranked #2 of 506.
- 12
Most-reviewed: Sippin Energy Products, 2,594 Google reviews at 4.9★, the most of 506 ranked; ranked #12.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
506 Shelton HVAC contractors are ranked here by CR Score, from ten published factors. 123 are open 24/7, 234 open Saturdays and 169 open Sundays, based on posted hours. The median Google rating is 4.8★ across 506 rated businesses.
Top 10 HVAC contractors in Shelton at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | A & S Nathan Heating & Cooling LLC | 64 | 4.8★ (446) | Ansonia, 1 mi away | 24/7 | Overall |
| 2 | Aire Serv of Shelton | 64 | 4.8★ (347) | Ansonia, 1 mi away | 24/7 | Emergencies |
| 3 | HL Bowman Inc Plumbing Heating & AC | 64 | 4.7★ (1,151) | Milford, 7 mi away | 24/7 | — |
| 4 | Levco Oil & Propane | 63 | 4.7★ (590) | Trumbull, 6 mi away | 24/7 | — |
| 5 | Edgerton, Inc. | 63 | 4.8★ (555) | Bethel, 9 mi away | 24/7 | — |
| 6 | Celco Heating & Air Conditioning | 63 | 4.7★ (861) | Bridgeport, 9 mi away | 24/7 | — |
| 7 | Ward Heating and Cooling LLC | 62 | 5.0★ (240) | Bethel, 10 mi away | 24/7 | — |
| 8 | Air, Inc. | 62 | 4.8★ (692) | Branford, 14 mi away | 24/7 | — |
| 9 | Aire Serv of Southwest Connecticut | 62 | 4.8★ (565) | Ansonia, 13 mi away | 24/7 | — |
| 10 | Ryan F. Murphy Heating & Cooling LLC | 61 | 5.0★ (969) | New Milford, 24 mi away | 24/7 | — |
The 506 best HVAC contractors in Shelton, 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, 1 mi away
64/100CR ScoreRanked #2 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, 7 mi away
64/100CR ScoreRanked #3 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 Trumbull, 6 mi away
63/100CR ScoreRanked #4 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 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 Bridgeport, 9 mi away
63/100CR ScoreRanked #6 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
Based in Bethel, 10 mi away
62/100CR ScoreRanked #7 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
#8 Air, Inc.
Based in Branford, 14 mi away
62/100CR ScoreRanked #8 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 Ansonia, 13 mi away
62/100CR ScoreRanked #9 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
Based in New Milford, 24 mi away
61/100CR ScoreRanked #10 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 Waterbury, 16 mi away
61/100CR 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 Bethel, 9 mi away
61/100CR ScoreRanked #12 because of its Google rating and review volume: 4.9★ from 2,594 Google reviews, the most in Shelton.
- 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
#13 Service Stars
Based in Danbury, 18 mi away
61/100CR ScoreRanked #13 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 Shelton
61/100CR ScoreRanked #14 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 Wallingford, 19 mi away
61/100CR ScoreRanked #15 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 Bridgeport, 9 mi away
61/100CR ScoreRanked #16 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 Southbury, 11 mi away
60/100CR ScoreRanked #17 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
Based in Bridgeport, 21 mi away
60/100CR ScoreRanked #18 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 Trumbull, 9 mi away
60/100CR ScoreRanked #19 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
Based in Norwalk, 22 mi away
60/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 1,998 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,998 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 70 Fort Point St, Norwalk, CT 06855
Based in Danbury, 19 mi away
60/100CR ScoreRanked #21 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, 20 mi away
60/100CR ScoreRanked #22 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 Naugatuck, 11 mi away
60/100CR ScoreRanked #23 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, 13 mi away
60/100CR ScoreRanked #24 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 Milford, 7 mi away
60/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 39 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 39 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 301 Brewster Rd STE 17, Milford, CT 06460
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 506 ranked HVAC contractors here; the rest are on their profiles.
Also serving Shelton
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) | 9 mi |
| Climate Care, LLC | 4.6★ (171) | 20 mi |
| Comfort Zone Heating & Air Conditioning | 4.0★ (2) | 6 mi |
| Comfortable Air LLC | In Shelton | |
| D J Melodia Plumbing, Heating and Drain cleaning | In Shelton | |
| David A. Brighindi Plumbing & Heating | 3.0★ (1) | In Shelton |
| Desirable Heating and Cooling | 4.0★ (2) | 2 mi |
| Direct Home Services | 4.7★ (268) | 22 mi |
| IES Residential | In Shelton | |
| JDH Plumbing & Heating | 4.9★ (58) | 3 mi |
| M P Electric | 5.0★ (2) | 8 mi |
| Mobilio and Son HVAC | 4.7★ (112) | 18 mi |
| North East HVAC | 5.0★ (2) | 5 mi |
| Park City | 4.2★ (37) | 10 mi |
| RB MECHANICAL LLC | 5.0★ (16) | 10 mi |
| Renz Heating & Air Conditioning LLC | 5.0★ (2) | 7 mi |
| SMR Heating And Cooling | 5.0★ (85) | 22 mi |
| SolvIt Home Services | 4.5★ (42) | 11 mi |
| Valley Mechanical LLC | 5.0★ (24) | 11 mi |
| Valley Plumbing & Heating | In Shelton |
How much do HVAC contractors cost in Shelton?
National price ranges in USD, not adjusted for Shelton. 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 Shelton HVAC contractors
We scored 506 Shelton 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 Shelton 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 Shelton: frequently asked questions
Who is the best HVAC contractor in Shelton?
By CR Score, the highest-ranked HVAC contractor in Shelton, CT is A & S Nathan Heating & Cooling LLC with a CR Score of 64/100. It has 4.8★ from 446 Google reviews. It is open 24/7. Aire Serv of Shelton (#2) and HL Bowman Inc Plumbing Heating & AC (#3) follow. We ranked 506 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Shelton?
ContractorsRanked ranks 506 HVAC contractors serving Shelton, CT. 4 of them are based in Shelton; 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 Shelton are open 24/7?
123 ranked HVAC contractors in Shelton post 24/7 hours. The highest-ranked are A & S Nathan Heating & Cooling LLC (#1), Aire Serv of Shelton (#2) and HL Bowman Inc Plumbing Heating & AC (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Shelton work on weekends?
234 of 506 ranked HVAC contractors post Saturday hours and 169 post Sunday hours. The highest-ranked open Saturdays are A & S Nathan Heating & Cooling LLC (#1), Aire Serv of Shelton (#2) and HL Bowman Inc Plumbing Heating & AC (#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 Shelton?
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 Shelton. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Shelton HVAC contractors have?
The median Google rating among 506 rated HVAC contractors in Shelton is 4.8★, with a median of 21 reviews. Sippin Energy Products has the most, 2,594 reviews, and ranks #12. 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 Shelton?
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 Shelton
- October 2026: CR Scores recalculated for 506 hvac contractors serving Shelton.
- October 2026: 4 duplicate listings merged.
More HVAC contractors and Shelton pages
HVAC contractors near Shelton
- HVAC contractors in Derby, CT505 ranked
- HVAC contractors in Ansonia, CT531 ranked
- HVAC contractors in Orange, CT504 ranked
- HVAC contractors in Woodbridge, CT522 ranked
- HVAC contractors in Seymour, CT553 ranked
- HVAC contractors in City of Milford (balance), CT522 ranked
- HVAC contractors in Milford, CT517 ranked
- HVAC contractors in Trumbull, CT501 ranked
- HVAC contractors in Oxford, CT549 ranked
- HVAC contractors in West Haven, CT441 ranked
Other trades in Shelton
- Roofers in Shelton1289 ranked
- Plumbers in Shelton480 ranked
- Electricians in Shelton397 ranked
- General contractors in Shelton744 ranked
- Painters in Shelton274 ranked
- Landscapers in Shelton306 ranked
- Handymen in Shelton91 ranked
- Kitchen remodelers in Shelton431 ranked
- Bathroom remodelers in Shelton403 ranked
- Flooring contractors in Shelton307 ranked
- Tile installers in Shelton68 ranked
- Drywall contractors in Shelton23 ranked
- Concrete contractors in Shelton146 ranked
- Fence contractors in Shelton154 ranked
- Deck builders in Shelton215 ranked
- Siding contractors in Shelton623 ranked
- Window installers in Shelton506 ranked
- Gutter installers in Shelton241 ranked
- Insulation contractors in Shelton65 ranked
- Solar installers in Shelton150 ranked
- Garage door repair companies in Shelton152 ranked
- Foundation repair companies in Shelton170 ranked
- Tree services in Shelton416 ranked
- Masonry contractors in Shelton408 ranked
- Water damage restoration companies in Shelton610 ranked
- Home builders in Shelton460 ranked
- Demolition contractors in Shelton58 ranked
- All contractors in Shelton