12 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Saint Johnsbury: Jeff MacKay Mechanical, CR Score 61/100; 4.9★ from 32 Google reviews.
Best for emergencies (open 24/7): Murrays Heating and Cooling, posts 24/7 hours; ranked #4 of 12.
Most-reviewed: Roland C Abbott Plumbing & Heating, LLC, 37 Google reviews at 4.2★, the most of 12 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
12 Saint Johnsbury HVAC contractors are ranked here by CR Score, from ten published factors. 1 is open 24/7, 2 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 4.5★ across 12 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Jeff MacKay Mechanical | 61 | 4.9★ (32) | Saint Johnsbury | — | Overall |
| 2 | Trombly Plumbing & Heating LLC | 60 | 3.8★ (22) | St Johnsbury, 1 mi away | — | — |
| 3 | Roland C Abbott Plumbing & Heating, LLC | 60 | 4.2★ (37) | Saint Johnsbury | — | Most reviews |
| 4 | Murrays Heating and Cooling | 57 | 5.0★ (17) | Lyndon, 14 mi away | 24/7 | Emergencies |
| 5 | Johnson's Heating & Plumbing | 57 | 4.2★ (9) | Lyndon, 9 mi away | Sat · Sun · Evenings | — |
| 6 | Cornell Plumbing & Heating Inc | 55 | 5.0★ (7) | Lyndon, 11 mi away | — | — |
| 7 | Harris Plumbing & Heating | 54 | 4.5★ (26) | Lyndon, 7 mi away | — | — |
| 8 | Bourne's Energy | 53 | 3.2★ (10) | Lyndon, 8 mi away | — | — |
| 9 | Harris Plumbing & Heating Inc | 52 | 4.4★ (21) | Lyndon, 9 mi away | — | — |
| 10 | Brien's Heating & Plumbing | 52 | 4.2★ (5) | Saint Johnsbury | — | — |
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: 4.9★ from 32 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in St Johnsbury, 1 mi away
Ranked #2 because of its Google rating and trade focus: 3.8★ from 22 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Saint Johnsbury
Ranked #3 because of its Google rating and review volume: 4.2★ from 37 Google reviews, the most in Saint Johnsbury.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lyndon, 14 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lyndon, 9 mi away
Ranked #5 because of its Google rating and trade focus: 4.2★ from 9 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lyndon, 11 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Lyndon, 7 mi away
Ranked #7 because of its Google rating and review volume: 4.5★ from 26 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lyndon, 8 mi away
Ranked #8 because of its Google rating and trade focus: 3.2★ from 10 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lyndon, 9 mi away
Ranked #9 because of its Google rating and review volume: 4.4★ from 21 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Johnsbury
Ranked #10 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Saint Johnsbury
Ranked #11 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Lyndon, 16 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
National price ranges in USD, not adjusted for Saint Johnsbury. 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 12 Saint Johnsbury 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 Saint Johnsbury 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 |