64/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 6,771 Google reviews, the most in Nesconset.
- 4.8★ from 6,771 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 260 Smith St, Farmingdale, NY 11735
Best HVAC Contractors in Nesconset, NY (2026)
752 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Nesconset: Universe Home Services, CR Score 64/100; 4.8★ from 6,771 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Energywise Inc, posts 24/7 hours; ranked #2 of 752.
- 5
Most-reviewed: Apple Air Heating Cooling Electric and Plumbing, 4,690 Google reviews at 4.8★, the most of 752 ranked after Universe Home Services; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
752 Nesconset HVAC contractors are ranked here by CR Score, from ten published factors. 237 are open 24/7, 460 open Saturdays and 320 open Sundays, based on posted hours. The median Google rating is 4.8★ across 752 rated businesses.
Top 10 HVAC contractors in Nesconset at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Universe Home Services | 64 | 4.8★ (6,771) | Farmingdale, 15 mi away | 24/7 | Overall |
| 2 | Energywise Inc | 63 | 4.9★ (514) | Ronkonkoma, 4 mi away | 24/7 | Emergencies |
| 3 | Kintech Heating, Cooling & Plumbing | 63 | 5.0★ (633) | Port Jefferson Station, 7 mi away | 24/7 | — |
| 4 | Cool Power LLC | 63 | 4.9★ (630) | Ronkonkoma, 6 mi away | 24/7 | — |
| 5 | Apple Air Heating Cooling Electric and Plumbing | 63 | 4.8★ (4,690) | Farmingdale, 17 mi away | 24/7 | Most reviews |
| 6 | Tragar Home Services | 62 | 4.9★ (3,757) | Hicksville, 20 mi away | 24/7 | — |
| 7 | US Air Conditioning & Heating | 62 | 4.8★ (582) | Port Jefferson Station, 7 mi away | 24/7 | — |
| 8 | Sunray Services - Air Conditioning and Heating | 62 | 4.5★ (494) | Nesconset | 24/7 | — |
| 9 | Dashing Dan's Plumbing & Heating Inc. | 62 | 4.9★ (764) | West Islip, 13 mi away | 24/7 | — |
| 10 | Varsity Home Service | 62 | 4.7★ (1,230) | Bohemia, 5 mi away | 24/7 | — |
The 752 best HVAC contractors in Nesconset, 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 Ronkonkoma, 4 mi away
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 514 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 514 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2231 5th Ave Suite 26, Ronkonkoma, NY 11779
Based in Port Jefferson Station, 7 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 633 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 633 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 585 N Bicycle Path # 6, Port Jefferson Station, NY 11776
Based in Ronkonkoma, 6 mi away
63/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 630 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 630 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 75 Air Park Dr, Ronkonkoma, NY 11779
Based in Farmingdale, 17 mi away
63/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 4,690 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 4,690 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 700 Broadhollow Rd, Farmingdale, NY 11735
Based in Hicksville, 20 mi away
62/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 3,757 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 3,757 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3 Washington Pkwy, Hicksville, NY 11801
Based in Port Jefferson Station, 7 mi away
62/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.8★ from 582 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 582 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 600 N Bicycle Path, Port Jefferson Station, NY 11776
Based in Nesconset
62/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.5★ from 494 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.5★ from 494 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 120 Lake Ave S #13, Nesconset, NY 11767
Based in West Islip, 13 mi away
62/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 764 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 764 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 258 Higbie Ln, West Islip, NY 11795
Based in Bohemia, 5 mi away
62/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.7★ from 1,230 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.7★ from 1,230 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1610 Ocean Ave, Bohemia, NY 11716
Based in Bay Shore, 11 mi away
61/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 258 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 258 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1062 Udall Rd, Bay Shore, NY 11706
Based in Coram, 15 mi away
61/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 439 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 439 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 68 Woodville Rd, Shoreham, NY 11786
#13 Jen Air Inc
Based in Bohemia, 6 mi away
61/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 138 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 138 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1507 Smithtown Ave #17, Bohemia, NY 11716
Based in Ronkonkoma, 4 mi away
61/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 117 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 117 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 154-1 Remington Blvd, Ronkonkoma, NY 11779
Based in Farmingville, 5 mi away
61/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 228 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 228 Google reviews
- Hours
- Mon–Sun 10 AM–6 PM
- Address
- 1055 Portion Rd #1E, Farmingville, NY 11738
Based in Bohemia, 6 mi away
61/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 135 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 135 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 481 Johnson Ave suite e, Bohemia, NY 11716
Based in Coram, 7 mi away
61/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 125 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 125 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11 Hulse Rd, Setauket- East Setauket, NY 11733
Based in West Babylon, 14 mi away
61/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 406 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 406 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 860 Little East Neck Rd North, West Babylon, NY 11704
Based in Amityville, 18 mi away
61/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 797 Google reviews, listed on Google as “Heating contractor”.
- 4.9★ from 797 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 76 Montauk Hwy, Amityville, NY 11701
Based in Deer Park, 12 mi away
60/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 328 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 328 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 561 Acorn St unit d, Deer Park, NY 11729
Based in Farmingdale, 17 mi away
60/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.6★ from 1,573 Google reviews, listed on Google as “HVAC contractor”.
- 4.6★ from 1,573 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 500 Bi County Blvd, Farmingdale, NY 11735
Based in Holtsville, 7 mi away
60/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.7★ from 191 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 191 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 20 Corporate Dr, Holtsville, NY 11742
Based in Brentwood, 6 mi away
60/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.8★ from 114 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 114 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1158 Suffolk Ave C, Brentwood, NY 11717
Based in East Farmingdale, 8 mi away
60/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 107 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.9★ from 107 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
#25 NH Ross
Based in Middle Island, 10 mi away
60/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.7★ from 2,447 Google reviews, listed on Google as “Heating contractor”.
- 4.7★ from 2,447 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat 8 AM–4 PM · Sun closed
- Address
- 120 Middle Country Rd, Middle Island, NY 11953
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 752 ranked HVAC contractors here; the rest are on their profiles.
Also serving Nesconset
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 |
|---|---|---|
| Ace Climate Enterprises | 1.0★ (2) | 3 mi |
| Ace HVAC Service, Inc. | 5.0★ (2) | 6 mi |
| Action Air Refrigeration | 1.0★ (2) | 6 mi |
| Best Climate Control Corporation | 5.0★ (2) | 5 mi |
| Corporate Climate Control | In Nesconset | |
| Crestivew Plumbing & Heating | 5.0★ (2) | 5 mi |
| Ferme & Son Energy Corporation. | 5.0★ (2) | 5 mi |
| Five Aces Plumbing Heating Corp | 5.0★ (2) | 5 mi |
| Island Air Heating and Cooling | 4.4★ (49) | 6 mi |
| Jet Air Co- Best Ventilation, Plumbing, Heating & Air Conditioning HVAC Contractor, Boiler installation Long Island, New York | 4.6★ (83) | 6 mi |
| Just Rite Heating & Cooling | 3.0★ (2) | 4 mi |
| L&V Mechanical | 1.0★ (2) | In Nesconset |
| Ljv mechanical | 5.0★ (104) | 9 mi |
| Long Island Energy Services | In Nesconset | |
| Madison & East Mechanical Corp | 5.0★ (2) | 4 mi |
| Michael James Industries, Inc. | 3.0★ (2) | 4 mi |
| One Hour Heating & Air Conditioning® | 4.5★ (210) | 12 mi |
| Pacific Heating & Air Conditioning | 4.9★ (60) | 6 mi |
| Sunset Refrigeration & AC | 5.0★ (2) | 4 mi |
| Tyler Heating, Air Conditioning, Refrigeration LLC | 4.7★ (570) | 22 mi |
How much do HVAC contractors cost in Nesconset?
National price ranges in USD, not adjusted for Nesconset. 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 |
When to hire an HVAC contractor in New York
In New York, 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 Nesconset HVAC contractors
We scored 752 Nesconset 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 Nesconset 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 Nesconset: frequently asked questions
Who is the best HVAC contractor in Nesconset?
By CR Score, the highest-ranked HVAC contractor in Nesconset, NY is Universe Home Services with a CR Score of 64/100. It has 4.8★ from 6,771 Google reviews. It is open 24/7. Energywise Inc (#2) and Kintech Heating, Cooling & Plumbing (#3) follow. We ranked 752 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Nesconset?
ContractorsRanked ranks 752 HVAC contractors serving Nesconset, NY. 1 of them is based in Nesconset; 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 Nesconset are open 24/7?
237 ranked HVAC contractors in Nesconset post 24/7 hours. The highest-ranked are Universe Home Services (#1), Energywise Inc (#2) and Kintech Heating, Cooling & Plumbing (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Nesconset work on weekends?
460 of 752 ranked HVAC contractors post Saturday hours and 320 post Sunday hours. The highest-ranked open Saturdays are Universe Home Services (#1), Energywise Inc (#2) and Kintech Heating, Cooling & Plumbing (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does ac replacement cost in Nesconset?
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 Nesconset. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Nesconset HVAC contractors have?
The median Google rating among 752 rated HVAC contractors in Nesconset is 4.8★, with a median of 18 reviews. Universe Home Services has the most, 6,771 reviews, and ranks #1. 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 Nesconset?
In New York, 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 does ContractorsRanked rank HVAC contractors?
Each HVAC contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Nesconset
- October 2026: CR Scores recalculated for 752 hvac contractors serving Nesconset.
- October 2026: 2 duplicate listings merged.
More HVAC contractors and Nesconset pages
HVAC contractors near Nesconset
- HVAC contractors in Lake Ronkonkoma, NY692 ranked
- HVAC contractors in Saint James, NY783 ranked
- HVAC contractors in Lake Grove, NY696 ranked
- HVAC contractors in Smithtown, NY816 ranked
- HVAC contractors in Centereach, NY710 ranked
- HVAC contractors in Hauppauge, NY799 ranked
- HVAC contractors in Ronkonkoma, NY631 ranked
- HVAC contractors in Holbrook, NY624 ranked
- HVAC contractors in Central Islip, NY737 ranked
- HVAC contractors in Stony Brook, NY781 ranked
Other trades in Nesconset
- Roofers in Nesconset1401 ranked
- Plumbers in Nesconset511 ranked
- Electricians in Nesconset355 ranked
- General contractors in Nesconset931 ranked
- Painters in Nesconset223 ranked
- Landscapers in Nesconset347 ranked
- Handymen in Nesconset86 ranked
- Kitchen remodelers in Nesconset538 ranked
- Bathroom remodelers in Nesconset457 ranked
- Flooring contractors in Nesconset340 ranked
- Tile installers in Nesconset78 ranked
- Drywall contractors in Nesconset21 ranked
- Concrete contractors in Nesconset187 ranked
- Fence contractors in Nesconset152 ranked
- Deck builders in Nesconset187 ranked
- Siding contractors in Nesconset659 ranked
- Window installers in Nesconset554 ranked
- Gutter installers in Nesconset221 ranked
- Insulation contractors in Nesconset60 ranked
- Solar installers in Nesconset144 ranked
- Garage door repair companies in Nesconset117 ranked
- Foundation repair companies in Nesconset264 ranked
- Tree services in Nesconset306 ranked
- Masonry contractors in Nesconset544 ranked
- Water damage restoration companies in Nesconset771 ranked
- Home builders in Nesconset541 ranked
- Demolition contractors in Nesconset110 ranked
- All contractors in Nesconset