816 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Smithtown: Universe Home Services, CR Score 92/100; 4.8★ from 6,771 Google reviews; open 24/7.
Best for emergencies (open 24/7): Kintech Heating, Cooling & Plumbing, posts 24/7 hours; ranked #2 of 816.
Most-reviewed: Apple Air Heating Cooling Electric and Plumbing, 4,690 Google reviews at 4.8★, the most of 816 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
816 Smithtown HVAC contractors are ranked here by CR Score, from 8 published factors. 258 are open 24/7, 496 open Saturdays and 347 open Sundays, based on posted hours. The median Google rating is 4.8★ across 816 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Universe Home Services | 92 | 4.8★ (6,771) | Farmingdale, 13 mi away | 24/7 | Overall |
| 2 | Kintech Heating, Cooling & Plumbing | 91 | 5.0★ (633) | Port Jefferson Station, 9 mi away | 24/7 | Emergencies |
| 3 | Apple Air Heating Cooling Electric and Plumbing | 91 | 4.8★ (4,690) | Farmingdale, 15 mi away | 24/7 | Most reviews |
| 4 | Energywise Inc | 91 | 4.9★ (514) | Ronkonkoma, 5 mi away | 24/7 | — |
| 5 | Tragar Home Services | 91 | 4.9★ (3,757) | Hicksville, 17 mi away | 24/7 | — |
| 6 | Cool Power LLC | 91 | 4.9★ (630) | Ronkonkoma, 8 mi away | 24/7 | — |
| 7 | Dashing Dan's Plumbing & Heating Inc. | 90 | 4.9★ (764) | West Islip, 12 mi away | 24/7 | — |
| 8 | Wilson's Plumbing Heating HVAC & Electric | 90 | 5.0★ (258) | Bay Shore, 9 mi away | 24/7 | — |
| 9 | US Air Conditioning & Heating | 89 | 4.8★ (582) | Port Jefferson Station, 9 mi away | 24/7 | — |
| 10 | GallettAir Inc. Heating & Air Conditioning | 89 | 4.9★ (406) | West Babylon, 13 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and review volume: 4.8★ from 6,771 Google reviews, the most Google reviews on this list (6,771).
Based in Port Jefferson Station, 9 mi away
Ranked #2 because of its Google rating and availability: 5.0★ from 633 Google reviews, open 24/7.
Based in Farmingdale, 15 mi away
Ranked #3 because of its Google rating and availability: 4.8★ from 4,690 Google reviews, open 24/7.
Based in Ronkonkoma, 5 mi away
Ranked #4 because of its Google rating and availability: 4.9★ from 514 Google reviews, open 24/7.
Based in Hicksville, 17 mi away
Ranked #5 because of its Google rating and availability: 4.9★ from 3,757 Google reviews, open 24/7.
Based in Ronkonkoma, 8 mi away
Ranked #6 because of its Google rating and availability: 4.9★ from 630 Google reviews, open 24/7.
Based in West Islip, 12 mi away
Ranked #7 because of its Google rating and availability: 4.9★ from 764 Google reviews, open 24/7.
Based in Bay Shore, 9 mi away
Ranked #8 because of its Google rating and availability: 5.0★ from 258 Google reviews, open 24/7.
Based in Port Jefferson Station, 9 mi away
Ranked #9 because of its Google rating and availability: 4.8★ from 582 Google reviews, open 24/7.
Based in West Babylon, 13 mi away
Ranked #10 because of its Google rating and availability: 4.9★ from 406 Google reviews, open 24/7.
Based in Amityville, 17 mi away
Ranked #11 because of its Google rating and availability: 4.9★ from 797 Google reviews, open 24/7.
Based in Coram, 17 mi away
Ranked #12 because of its Google rating and availability: 5.0★ from 439 Google reviews, open 24/7.
Based in Nesconset, 2 mi away
Ranked #13 because of its Google rating and availability: 4.5★ from 494 Google reviews, open 24/7.
Based in Bohemia, 7 mi away
Ranked #14 because of its Google rating and availability: 4.9★ from 138 Google reviews, open 24/7.
Based in Ronkonkoma, 6 mi away
Ranked #15 because of its Google rating and availability: 4.9★ from 117 Google reviews, open 24/7.
Based in Deer Park, 10 mi away
Ranked #16 because of its Google rating and availability: 4.8★ from 328 Google reviews, open 24/7.
Based in Bohemia, 8 mi away
Ranked #17 because of its Google rating and availability: 4.9★ from 135 Google reviews, open 24/7.
Based in Coram, 8 mi away
Ranked #18 because of its Google rating and availability: 4.9★ from 125 Google reviews, open 24/7.
Based in Brentwood, 5 mi away
Ranked #19 because of its Google rating and availability: 4.8★ from 114 Google reviews, open 24/7.
Based in Farmingdale, 15 mi away
Ranked #20 because of its Google rating and availability: 4.6★ from 1,573 Google reviews, open 24/7.
Based in Lindenhurst, 15 mi away
Ranked #21 because of its Google rating and availability: 5.0★ from 194 Google reviews, open 24/7.
Based in West Babylon, 13 mi away
Ranked #22 because of its Google rating and availability: 4.8★ from 321 Google reviews, open 24/7.
Based in Massapequa, 17 mi away
Ranked #23 because of its Google rating and availability: 4.8★ from 590 Google reviews, open 24/7.
Based in Copiague, 15 mi away
Ranked #24 because of its Google rating and availability: 4.8★ from 407 Google reviews, open 24/7.
Based in Bay Shore, 8 mi away
Ranked #25 because of its Google rating and availability: 5.0★ from 63 Google reviews, open 24/7.
#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 816 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 |
|---|---|---|
| Ace Climate Enterprises | 1.0★ (2) | 4 mi |
| AIR PLUS LLC | In Smithtown | |
| All Island Radiant | 5.0★ (1) | In Smithtown |
| Apollo Hvac Corp | 3.0★ (2) | 8 mi |
| Best Climate Control Corporation | 5.0★ (2) | 6 mi |
| Centra Air Conditioning & Heating | In Smithtown | |
| Crestivew Plumbing & Heating | 5.0★ (2) | 2 mi |
| Ferme & Son Energy Corporation. | 5.0★ (2) | 5 mi |
| Five Aces Plumbing Heating Corp | 5.0★ (2) | 6 mi |
| Invictus Heating & Air Conditioning | 5.0★ (2) | 6 mi |
| Jet Air Co- Best Ventilation, Plumbing, Heating & Air Conditioning HVAC Contractor, Boiler installation Long Island, New York | 4.6★ (83) | 4 mi |
| Johnson Controls | 3.5★ (2) | 4 mi |
| Just Rite Heating & Cooling | 3.0★ (2) | 6 mi |
| Ljv mechanical | 5.0★ (104) | 11 mi |
| Madison & East Mechanical Corp | 5.0★ (2) | 5 mi |
| Michael James Industries, Inc. | 3.0★ (2) | 6 mi |
| One Hour Heating & Air Conditioning® | 4.5★ (210) | 10 mi |
| Pacific Heating & Air Conditioning | 4.9★ (60) | 8 mi |
| Petro Home Services | 4.4★ (872) | 14 mi |
| Sunset Refrigeration & AC | 5.0★ (2) | 6 mi |
National price ranges in USD, not adjusted for Smithtown. 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 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.
We scored 816 Smithtown HVAC contractors on 8 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. Unknown factors are left out of the score, 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 Smithtown data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |