65/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 6,771 Google reviews, the most in Greenlawn.
- 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 Greenlawn, NY (2026)
1,173 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Greenlawn: Universe Home Services, CR Score 65/100; 4.8★ from 6,771 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Tragar Home Services, posts 24/7 hours; ranked #2 of 1,173.
- 3
Most-reviewed: Apple Air Heating Cooling Electric and Plumbing, 4,690 Google reviews at 4.8★, the most of 1,173 ranked after Universe Home Services; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,173 Greenlawn HVAC contractors are ranked here by CR Score, from ten published factors. 367 are open 24/7, 713 open Saturdays and 503 open Sundays, based on posted hours. The median Google rating is 4.8★ across 1,173 rated businesses.
Top 10 HVAC contractors in Greenlawn at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Universe Home Services | 65 | 4.8★ (6,771) | Farmingdale, 8 mi away | 24/7 | Overall |
| 2 | Tragar Home Services | 65 | 4.9★ (3,757) | Hicksville, 11 mi away | 24/7 | Emergencies |
| 3 | Apple Air Heating Cooling Electric and Plumbing | 64 | 4.8★ (4,690) | Farmingdale, 10 mi away | 24/7 | Most reviews |
| 4 | Dashing Dan's Plumbing & Heating Inc. | 62 | 4.9★ (764) | West Islip, 11 mi away | 24/7 | — |
| 5 | HomeServe of Long Island | 62 | 4.6★ (1,573) | Farmingdale, 10 mi away | 24/7 | — |
| 6 | Suffolk Plumbing Inc | 62 | 4.9★ (797) | Amityville, 14 mi away | 24/7 | — |
| 7 | GallettAir Inc. Heating & Air Conditioning | 61 | 4.9★ (406) | West Babylon, 11 mi away | 24/7 | — |
| 8 | Wilson's Plumbing Heating HVAC & Electric | 61 | 5.0★ (258) | Bay Shore, 10 mi away | 24/7 | — |
| 9 | Energywise Inc | 61 | 4.9★ (514) | Ronkonkoma, 13 mi away | 24/7 | — |
| 10 | K2 Heating & Air Conditioning | 61 | 4.8★ (328) | Deer Park, 8 mi away | 24/7 | — |
The 1,173 best HVAC contractors in Greenlawn, 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 Hicksville, 11 mi away
65/100CR ScoreRanked #2 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 Farmingdale, 10 mi away
64/100CR ScoreRanked #3 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 West Islip, 11 mi away
62/100CR ScoreRanked #4 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 Farmingdale, 10 mi away
62/100CR ScoreRanked #5 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 Amityville, 14 mi away
62/100CR ScoreRanked #6 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 West Babylon, 11 mi away
61/100CR ScoreRanked #7 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 Bay Shore, 10 mi away
61/100CR ScoreRanked #8 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 Ronkonkoma, 13 mi away
61/100CR ScoreRanked #9 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 Deer Park, 8 mi away
61/100CR ScoreRanked #10 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 Huntington Station, 2 mi away
61/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.5★ from 398 Google reviews, listed on Google as “HVAC contractor”.
- 4.5★ from 398 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 151 E 2nd St, Huntington Station, NY 11746
Based in Port Washington, 16 mi away
61/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.8★ from 1,212 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,212 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 24 Seaview Blvd, Port Washington, NY 11050
Based in Floral Park, 20 mi away
61/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 929 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 929 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 97 Gilmore Blvd, Floral Park, NY 11001
Based in Port Jefferson Station, 17 mi away
61/100CR ScoreRanked #14 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
#15 Cool Power LLC
Based in Ronkonkoma, 15 mi away
61/100CR ScoreRanked #15 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 West Babylon, 10 mi away
61/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.8★ from 321 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 321 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 40 Field St, West Babylon, NY 11704
Based in Massapequa, 14 mi away
61/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 590 Google reviews, listed on Google as “Heating contractor”.
- 4.8★ from 590 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5620 Old Sunrise Hwy, Massapequa, NY 11758
Based in Huntington, 3 mi away
61/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 81 Google reviews, listed on Google as “Heating contractor”.
- 4.9★ from 81 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 75 Prospect St Suite 112, Huntington, NY 11743
Based in Stamford, 15 mi away
61/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.8★ from 718 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 718 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 430 Fairfield Ave, Stamford, CT 06902
Based in Copiague, 12 mi away
60/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 407 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 407 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 35 Court St, Copiague, NY 11726
Based in Hicksville, 10 mi away
60/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 187 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 187 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 50 Bethpage Rd, Hicksville, NY 11801
Based in Lindenhurst, 13 mi away
60/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 194 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 194 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- Madison Ave, Lindenhurst, NY 11757
Based in Norwalk, 16 mi away
60/100CR ScoreRanked #23 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 Massapequa, 14 mi away
60/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 283 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 283 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5788 Merrick Rd Suite 203, Massapequa, NY 11758
#25 AMHAC
Based in Eastchester, 24 mi away
60/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 1,440 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,440 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 365 White Plains Rd, Eastchester, NY 10709
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 1,173 ranked HVAC contractors here; the rest are on their profiles.
Also serving Greenlawn
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 |
|---|---|---|
| Airz HVAC Inc | 3.0★ (2) | 6 mi |
| Al Kiewra Jr Plumbing & Heating | 5.0★ (2) | 4 mi |
| All-Temp Refrigeration & Air Conditioning, Corp. | 3.0★ (2) | 10 mi |
| Apollo Hvac Corp | 3.0★ (2) | 8 mi |
| Caribbean Air Conditioning Corp | 3.0★ (2) | 2 mi |
| Commercial Instrumentation Services | 2.0★ (2) | 8 mi |
| Crestivew Plumbing & Heating | 5.0★ (2) | 7 mi |
| DZ Plumbing and Mechanical | 5.0★ (1) | In Greenlawn |
| Harborfields Heating & Cooling Inc | In Greenlawn | |
| HTP Mechanical Corporation | 5.0★ (2) | 8 mi |
| Jet Air Co- Best Ventilation, Plumbing, Heating & Air Conditioning HVAC Contractor, Boiler installation Long Island, New York | 4.6★ (83) | 7 mi |
| John Mc Laughlin Plumbing & Heating | 5.0★ (2) | In Greenlawn |
| Johnson Controls | 3.5★ (2) | 7 mi |
| Long Island's Burner King, LLC | 4.3★ (428) | 13 mi |
| Moimoi & Odeen | 1.0★ (2) | 10 mi |
| Paul Rosenvold Inc | 5.0★ (2) | 2 mi |
| Petro Home Services | 4.3★ (687) | 12 mi |
| Ryan Anthony's Heating Service, Inc. | 4.5★ (161) | 9 mi |
| Strikehard Mechanical | 5.0★ (2) | 1 mi |
| Wenker's Plumbing Heating & Back | 3.5★ (2) | 4 mi |
How much do HVAC contractors cost in Greenlawn?
National price ranges in USD, not adjusted for Greenlawn. 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 Greenlawn HVAC contractors
We scored 1,173 Greenlawn 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 Greenlawn 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 Greenlawn: frequently asked questions
Who is the best HVAC contractor in Greenlawn?
By CR Score, the highest-ranked HVAC contractor in Greenlawn, NY is Universe Home Services with a CR Score of 65/100. It has 4.8★ from 6,771 Google reviews. It is open 24/7. Tragar Home Services (#2) and Apple Air Heating Cooling Electric and Plumbing (#3) follow. We ranked 1,173 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Greenlawn?
ContractorsRanked ranks 1,173 HVAC contractors serving Greenlawn, NY. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which HVAC contractors in Greenlawn are open 24/7?
367 ranked HVAC contractors in Greenlawn post 24/7 hours. The highest-ranked are Universe Home Services (#1), Tragar Home Services (#2) and Apple Air Heating Cooling Electric and Plumbing (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Greenlawn work on weekends?
713 of 1,173 ranked HVAC contractors post Saturday hours and 503 post Sunday hours. The highest-ranked open Saturdays are Universe Home Services (#1), Tragar Home Services (#2) and Apple Air Heating Cooling Electric and Plumbing (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does ac replacement cost in Greenlawn?
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 Greenlawn. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Greenlawn HVAC contractors have?
The median Google rating among 1,173 rated HVAC contractors in Greenlawn is 4.8★, with a median of 17 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 Greenlawn?
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 Greenlawn
- October 2026: CR Scores recalculated for 1,173 hvac contractors serving Greenlawn.
- October 2026: 3 duplicate listings merged.
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