46 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Williston: Call The Whale (Plumbing Heating Air Electrical), CR Score 66/100; 4.7★ from 372 Google reviews; open 24/7.
Best for emergencies (open 24/7): Falcon Plumbing Service Inc, posts 24/7 hours; ranked #3 of 46.
Most-reviewed: Green Heat, 476 Google reviews at 5.0★, the most of 46 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
46 Williston HVAC contractors are ranked here by CR Score, from ten published factors. 7 are open 24/7, 13 open Saturdays and 10 open Sundays, based on posted hours. The median Google rating is 4.6★ across 46 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Call The Whale (Plumbing Heating Air Electrical) | 66 | 4.7★ (372) | Williston | 24/7 | Overall |
| 2 | Green Heat | 61 | 5.0★ (476) | Burlington, 7 mi away | — | Most reviews |
| 3 | Falcon Plumbing Service Inc | 59 | 4.2★ (63) | Burlington, 5 mi away | 24/7 | Emergencies |
| 4 | Vermont Energy Contracting | 58 | 4.6★ (115) | Williston | — | — |
| 5 | Greg's Gas Heating & Home Inspections LLC | 58 | 5.0★ (13) | Essex Junction, 5 mi away | 24/7 | — |
| 6 | Air Systems Inc | 58 | 4.7★ (24) | South Burlington, 4 mi away | Sat · Sun · Evenings | — |
| 7 | O'Neal Mechanical LLC | 58 | 4.6★ (7) | Burlington, 1 mi away | 24/7 | — |
| 8 | Benoure Plumbing, Heating & Air Conditioning | 57 | 4.4★ (234) | South Burlington, 5 mi away | — | — |
| 9 | A Cooper Mechanical, Inc. | 57 | 5.0★ (38) | Williston | — | — |
| 10 | Red Rock Mechanical, LLC | 57 | 3.9★ (81) | Colchester, 13 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.7★ from 372 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Burlington, 7 mi away
Ranked #2 because of its Google rating and review volume: 5.0★ from 476 Google reviews, the most in Williston.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Burlington, 5 mi away
Ranked #3 because of its Google rating and trade focus: 4.2★ from 63 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Williston
Ranked #4 because of its Google rating and trade focus: 4.6★ from 115 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Essex Junction, 5 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in South Burlington, 4 mi away
Ranked #6 because of its Google rating and trade focus: 4.7★ from 24 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Burlington, 1 mi away
Ranked #7 because of its Google rating and trade focus: 4.6★ from 7 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in South Burlington, 5 mi away
Ranked #8 because of its Google rating and trade focus: 4.4★ from 234 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Williston
Ranked #9 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Colchester, 13 mi away
Ranked #10 because of its Google rating and trade focus: 3.9★ from 81 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Burlington, 6 mi away
Ranked #11 because of its Google rating and trade focus: 4.7★ from 35 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Morristown, 20 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 86 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Williston
Ranked #13 because of its Google rating and trade focus: 3.1★ from 9 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Colchester, 12 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 80 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Williston
Ranked #15 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Winooski, 7 mi away
Ranked #16 because of its Google rating and trade focus: 3.4★ from 16 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Burlington, 7 mi away
Ranked #17 because of its Google rating and trade focus: 4.6★ from 5 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Burlington, 1 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Colchester, 11 mi away
Ranked #19 because of its Google rating and trade focus: 4.4★ from 65 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in South Burlington, 5 mi away
Ranked #20 because of its Google rating and trade focus: 4.4★ from 26 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Essex Junction, 6 mi away
Ranked #21 because of its Google rating and trade focus: 4.1★ from 40 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Burlington, 8 mi away
Ranked #22 because of its Google rating and trade focus: 4.4★ from 9 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Colchester, 18 mi away
Ranked #23 because of its Google rating and trade focus: 3.8★ from 6 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Colchester, 7 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 30 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Essex Junction, 4 mi away
Ranked #25 because of its Google rating and trade focus: 3.4★ from 5 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#1 to #25 are shown in full above. Here are #26 to #46, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | all seasons mechanical | 52 | 4.8★ (5) | 1 mi |
| 27 | Maheux Heating & Refrigeration | 52 | 5.0★ (9) | 6 mi |
| 28 | New England Air Systems LLC | 52 | 5.0★ (4) | In Williston |
| 29 | Vermont Mechanical | 52 | 3.7★ (6) | In Williston |
| 30 | Control Technologies Inc. | 52 | 3.8★ (5) | In Williston |
| 31 | VHV Company - Full Service HVAC/R & Plumbing Construction and Service Repair | 52 | 4.2★ (15) | 8 mi |
| 32 | Williamson Plumbing & Heating, Inc. | 51 | 5.0★ (3) | In Williston |
| 33 | Homans Associates | 51 | 4.0★ (3) | In Williston |
| 34 | Fischer's Heating & Gas | 51 | 3.6★ (7) | 5 mi |
| 35 | Chuck's Heating & A/C, Inc | 50 | 3.2★ (77) | 7 mi |
| 36 | Northeast Air Solutions Inc. | 50 | 4.8★ (4) | 6 mi |
| 37 | Vapor Stone Rail Systems | 50 | 4.2★ (25) | 24 mi |
| 38 | Champ Mechanical | 50 | 3.6★ (5) | 7 mi |
| 39 | Mitchell Sheet Metal Inc | 50 | 5.0★ (3) | 8 mi |
| 40 | Jack's HVAC | 49 | 4.4★ (7) | 13 mi |
| 41 | B.C. Carrier Plumbing & Heating | 49 | 5.0★ (4) | 11 mi |
| 42 | Kirk Mechanical | 49 | 5.0★ (7) | 17 mi |
| 43 | Bourne's Energy | 49 | 3.5★ (11) | 13 mi |
| 44 | Bourne's Energy | 48 | 3.8★ (37) | 25 mi |
| 45 | Pinnacle Air Systems LLC | 48 | 5.0★ (3) | 15 mi |
| 46 | Helios HVAC | 46 | 5.0★ (5) | 25 mi |
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 |
|---|---|---|
| Bernie's Plumbing & Heating | In Williston | |
| Bolduc Plumbing & Heating | In Williston | |
| Bryce Mechanical Systems | 3.0★ (6) | In Williston |
| Building Energy | 4.4★ (42) | In Williston |
| Burlington Plumbing and Heating Pros | 1 mi | |
| Chase Plumbing & Heating | 5.0★ (1) | 10 mi |
| Dahal brothers mechanical llc | 1 mi | |
| Fire and Ice HVAC LLC | 1.0★ (1) | 14 mi |
| Four Seasons HVAC | 5.0★ (1) | 23 mi |
| Heating & AC Inc | In Williston | |
| Heating & Cooling | 5.0★ (1) | 7 mi |
| McGovern Mechanical | 1.0★ (1) | 5 mi |
| North Woods Plumbing & Mechanical, LLC | 5.0★ (1) | 3 mi |
| Northeastern HVAC | 1 mi | |
| Parker's Heating and Cooling | 5.0★ (2) | 24 mi |
| Precision Balancing | 1.0★ (2) | 5 mi |
| Summit Heating & Air Conditioning LLC | 5.0★ (2) | 12 mi |
| The Boiler Man Heating & Plumbing | 3.0★ (2) | 1 mi |
| Trane Commercial Sales Office | 3 mi | |
| Vermont Heating & Vent | In Williston |
National price ranges in USD, not adjusted for Williston. 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 Vermont, 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 46 Williston 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 Williston 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 |