64/100CR Score
Ranked #1 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
Best HVAC Contractors in Oxford, CT (2026)
549 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Oxford: Ward Heating and Cooling LLC, CR Score 64/100; 5.0★ from 240 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 549.
- 11
Most-reviewed: Total Mechanical Systems, 2,607 Google reviews at 4.7★, the most of 549 ranked; ranked #11.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
549 Oxford HVAC contractors are ranked here by CR Score, from ten published factors. 134 are open 24/7, 253 open Saturdays and 184 open Sundays, based on posted hours. The median Google rating is 4.8★ across 549 rated businesses.
Top 10 HVAC contractors in Oxford at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Ward Heating and Cooling LLC | 64 | 5.0★ (240) | Bethel, 3 mi away | 24/7 | Overall |
| 2 | A & S Nathan Heating & Cooling LLC | 63 | 4.8★ (446) | Ansonia, 7 mi away | 24/7 | Emergencies |
| 3 | American Heating Air Conditioning Service | 63 | 4.9★ (372) | Waterbury, 8 mi away | 24/7 | — |
| 4 | Edgerton, Inc. | 63 | 4.8★ (555) | Bethel, 10 mi away | 24/7 | — |
| 5 | Ryan F. Murphy Heating & Cooling LLC | 63 | 5.0★ (969) | New Milford, 18 mi away | 24/7 | — |
| 6 | Aire Serv of Shelton | 63 | 4.8★ (347) | Ansonia, 7 mi away | 24/7 | — |
| 7 | A.E. Olsen Co., Inc. Service America | 62 | 4.8★ (170) | Southbury, 4 mi away | 24/7 | — |
| 8 | HL Bowman Inc Plumbing Heating & AC | 62 | 4.7★ (1,151) | Milford, 15 mi away | 24/7 | — |
| 9 | Service Sean, LLC | 62 | 4.9★ (115) | Middlebury, 5 mi away | 24/7 | — |
| 10 | E Elving Heating and Cooling LLC | 62 | 4.9★ (90) | Naugatuck, 4 mi away | 24/7 | — |
The 549 best HVAC contractors in Oxford, 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, 7 mi away
63/100CR 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 Waterbury, 8 mi away
63/100CR ScoreRanked #3 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, 10 mi away
63/100CR ScoreRanked #4 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 New Milford, 18 mi away
63/100CR ScoreRanked #5 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 Ansonia, 7 mi away
63/100CR ScoreRanked #6 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 Southbury, 4 mi away
62/100CR ScoreRanked #7 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 Milford, 15 mi away
62/100CR ScoreRanked #8 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 Middlebury, 5 mi away
62/100CR ScoreRanked #9 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 Naugatuck, 4 mi away
62/100CR ScoreRanked #10 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 Plainville, 22 mi away
61/100CR ScoreRanked #11 because of its Google rating and review volume: 4.7★ from 2,607 Google reviews, the most in Oxford.
- 4.7★ from 2,607 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 74 Northwest Dr, Plainville, CT 06062
#12 Service Stars
Based in Danbury, 16 mi away
61/100CR ScoreRanked #12 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 Wallingford, 16 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 Trumbull, 13 mi away
61/100CR ScoreRanked #14 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, 17 mi away
61/100CR ScoreRanked #15 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 Bristol, 18 mi away
61/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.8★ from 695 Google reviews, listed on Google as “Heating contractor”.
- 4.8★ from 695 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 175 Spring St, Southington, CT 06489
Based in Waterbury, 8 mi away
61/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 277 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 277 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 240 Railroad Hill St, Waterbury, CT 06708
#18 Air, Inc.
Based in Branford, 19 mi away
61/100CR ScoreRanked #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
Based in Danbury, 16 mi away
61/100CR ScoreRanked #19 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 Naugatuck, 4 mi away
61/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 44 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 19 Tower Ln, Naugatuck, CT 06770
Based in Danbury, 18 mi away
61/100CR ScoreRanked #21 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 Ansonia, 19 mi away
60/100CR ScoreRanked #22 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 Bethel, 11 mi away
60/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 2,594 Google reviews, listed on Google as “HVAC contractor”.
- 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 Bridgeport, 22 mi away
60/100CR ScoreRanked #24 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 Bristol, 17 mi away
60/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 1,841 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,841 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 8 AM–12 PM · Sun closed
- Address
- 81 River St, Thomaston, CT 06787
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 549 ranked HVAC contractors here; the rest are on their profiles.
Also serving Oxford
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 |
|---|---|---|
| Able Plumbing & Heating | 5.0★ (2) | 9 mi |
| Active Air LLC | 5.0★ (44) | 14 mi |
| B.p. Heating & Cooling Llc | In Oxford | |
| Buddy's Fuel Oil | 4.8★ (18) | In Oxford |
| Cipriano & Sons LLc | 4.8★ (17) | 8 mi |
| Desirable Heating and Cooling | 4.0★ (2) | 9 mi |
| Di Dryer Vent Cleaning Services Oxford, CT | 4.0★ (4) | In Oxford |
| Direct Home Services | 4.7★ (268) | 21 mi |
| Eastern Mechanical Services | 5.0★ (3) | In Oxford |
| Express Heating and Cooling LLC | 5.0★ (2) | 10 mi |
| Hands On Heating Inc. | 4.9★ (59) | 17 mi |
| Innovative Heating & Cooling LLC | 5.0★ (39) | 15 mi |
| Jacozzi Plumbing Heating & Cooling | 5.0★ (2) | 9 mi |
| Jim's Heating & Air Conditioning | 5.0★ (2) | 6 mi |
| JP DUNN HEATING & COOLING, LLC | 4.9★ (68) | 18 mi |
| POLO Plumbing & Heating LLC | 5.0★ (2) | 11 mi |
| Rick Sekelsky Plumbing & Heating | 5.0★ (2) | 6 mi |
| Seliga Plumbing & Heating LLC | In Oxford | |
| SMR Heating And Cooling | 5.0★ (85) | 19 mi |
| Tyler Heating, Air Conditioning, Refrigeration LLC | 4.7★ (570) | 18 mi |
How much do HVAC contractors cost in Oxford?
National price ranges in USD, not adjusted for Oxford. 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 Oxford HVAC contractors
We scored 549 Oxford 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 Oxford 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 Oxford: frequently asked questions
Who is the best HVAC contractor in Oxford?
By CR Score, the highest-ranked HVAC contractor in Oxford, CT is Ward Heating and Cooling LLC with a CR Score of 64/100. It has 5.0★ from 240 Google reviews. It is open 24/7. A & S Nathan Heating & Cooling LLC (#2) and American Heating Air Conditioning Service (#3) follow. We ranked 549 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Oxford?
ContractorsRanked ranks 549 HVAC contractors serving Oxford, CT. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which HVAC contractors in Oxford are open 24/7?
134 ranked HVAC contractors in Oxford post 24/7 hours. The highest-ranked are Ward Heating and Cooling LLC (#1), A & S Nathan Heating & Cooling LLC (#2) and American Heating Air Conditioning Service (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Oxford work on weekends?
253 of 549 ranked HVAC contractors post Saturday hours and 184 post Sunday hours. The highest-ranked open Saturdays are Ward Heating and Cooling LLC (#1), A & S Nathan Heating & Cooling LLC (#2) and American Heating Air Conditioning Service (#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 Oxford?
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 Oxford. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Oxford HVAC contractors have?
The median Google rating among 549 rated HVAC contractors in Oxford is 4.8★, with a median of 22 reviews. Total Mechanical Systems has the most, 2,607 reviews, and ranks #11. 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 Oxford?
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 Oxford
- October 2026: CR Scores recalculated for 549 hvac contractors serving Oxford.
- October 2026: 4 duplicate listings merged.
More HVAC contractors and Oxford pages
HVAC contractors near Oxford
- HVAC contractors in Seymour, CT553 ranked
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- HVAC contractors in Southbury, CT532 ranked
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- HVAC contractors in Middlebury, CT572 ranked
- HVAC contractors in Woodbridge, CT522 ranked
- HVAC contractors in Derby, CT505 ranked
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Other trades in Oxford
- Roofers in Oxford1050 ranked
- Plumbers in Oxford519 ranked
- Electricians in Oxford427 ranked
- General contractors in Oxford783 ranked
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- Kitchen remodelers in Oxford423 ranked
- Bathroom remodelers in Oxford415 ranked
- Flooring contractors in Oxford321 ranked
- Tile installers in Oxford54 ranked
- Drywall contractors in Oxford19 ranked
- Concrete contractors in Oxford159 ranked
- Fence contractors in Oxford164 ranked
- Deck builders in Oxford224 ranked
- Siding contractors in Oxford493 ranked
- Window installers in Oxford409 ranked
- Gutter installers in Oxford249 ranked
- Insulation contractors in Oxford71 ranked
- Solar installers in Oxford121 ranked
- Garage door repair companies in Oxford156 ranked
- Foundation repair companies in Oxford141 ranked
- Tree services in Oxford449 ranked
- Masonry contractors in Oxford408 ranked
- Water damage restoration companies in Oxford450 ranked
- Home builders in Oxford362 ranked
- Demolition contractors in Oxford63 ranked
- All contractors in Oxford