166 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Northfield: Rowell's Services, CR Score 96/100; 4.8★ from 3,082 Google reviews; open 24/7.
Best for emergencies (open 24/7): Heritage Home Service, posts 24/7 hours; ranked #2 of 166.
Most-reviewed: Heritage Home Service, 802 Google reviews at 4.9★, the most of 166 ranked after Rowell's Services; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
166 Northfield HVAC contractors are ranked here by CR Score, from 8 published factors. 47 are open 24/7, 69 open Saturdays and 51 open Sundays, based on posted hours. The median Google rating is 4.9★ across 166 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Rowell's Services | 96 | 4.8★ (3,082) | Northfield | 24/7 | Overall |
| 2 | Heritage Home Service | 92 | 4.9★ (802) | Laconia, 10 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Just Hot Water LLC | 92 | 5.0★ (121) | Northfield | 24/7 | — |
| 4 | Total Climate Control Plumbing, Heating & Air Conditioning | 90 | 4.8★ (633) | Concord, 9 mi away | 24/7 | — |
| 5 | Triumph Home Services | 88 | 4.9★ (539) | Concord, 21 mi away | 24/7 | — |
| 6 | Comfort Matters Heating & Cooling LLC | 87 | 5.0★ (51) | Concord, 9 mi away | 24/7 | — |
| 7 | Hall's Burner Service Inc | 87 | 4.7★ (99) | Franklin, 8 mi away | 24/7 | — |
| 8 | Above & Below HVAC | 87 | 4.9★ (32) | Franklin, 6 mi away | 24/7 | — |
| 9 | Bigfoot HVAC | 87 | 5.0★ (35) | Franklin, 9 mi away | 24/7 | — |
| 10 | Windham Mechanical LLC | 86 | 4.9★ (73) | Methuen, 14 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.8★ from 3,082 Google reviews, the most Google reviews on this list (3,082).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Laconia, 10 mi away
Ranked #2 because of its Google rating and availability: 4.9★ from 802 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Northfield
Ranked #3 because of its Google rating and availability: 5.0★ from 121 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Concord, 9 mi away
Ranked #4 because of its Google rating and availability: 4.8★ from 633 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Concord, 21 mi away
Ranked #5 because of its Google rating and availability: 4.9★ from 539 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Concord, 9 mi away
Ranked #6 because of its Google rating and availability: 5.0★ from 51 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Franklin, 8 mi away
Ranked #7 because of its Google rating and availability: 4.7★ from 99 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Franklin, 6 mi away
Ranked #8 because of its Google rating and availability: 4.9★ from 32 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Franklin, 9 mi away
Ranked #9 because of its Google rating and availability: 5.0★ from 35 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Methuen, 14 mi away
Ranked #10 because of its Google rating and availability: 4.9★ from 73 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Northfield
Ranked #11 because of its Google rating and availability: 4.8★ from 5 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Northfield
Ranked #12 because of its Google rating and availability: 4.5★ from 22 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Andover, 14 mi away
Ranked #13 because of its Google rating and availability: 5.0★ from 32 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Franklin, 13 mi away
Ranked #14 because of its Google rating and availability: 5.0★ from 40 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hudson, 14 mi away
Ranked #15 because of its Google rating and availability: 5.0★ from 22 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Concord, 15 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 133 Google reviews, listed on Google as “HVAC contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Concord, 16 mi away
Ranked #17 because of its Google rating and availability: 5.0★ from 28 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hopkinton, 20 mi away
Ranked #18 because of its Google rating and availability: 4.9★ from 57 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Moultonborough, 22 mi away
Ranked #19 because of its Google rating and availability: 5.0★ from 54 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gilford, 13 mi away
Ranked #20 because of its Google rating and availability: 4.8★ from 20 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Franklin, 13 mi away
Ranked #21 because of its Google rating and availability: 5.0★ from 14 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Franklin, 4 mi away
Ranked #22 because of its Google rating and availability: 5.0★ from 14 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gilford, 19 mi away
Ranked #23 because of its Google rating and availability: 4.6★ from 74 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Concord, 19 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 92 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Concord, 22 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 132 Google reviews, listed on Google as “Heating contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
#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 166 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 |
|---|---|---|
| All Trade Northeast | In Northfield | |
| Berger HVAC, LLC | 3.0★ (4) | 23 mi |
| Complete Mechanical LLC | 5.0★ (1) | 3 mi |
| ECO-HVAC | 5.0★ (1) | In Northfield |
| ED'S HEATING SERVICE | 5.0★ (7) | 22 mi |
| Energy Unlimited, LLC Heating & Cooling | 5.0★ (2) | In Northfield |
| Foresight Plumbing And Heating LLC | 5.0★ (2) | 25 mi |
| Hood Refrigeration | 5.0★ (1) | 2 mi |
| J Donnelly Plumbing & Heating | 5.0★ (2) | 19 mi |
| J. Kendall Mechanical | 5.0★ (1) | 4 mi |
| Joe Boxer Plumbing and Heating | 5.0★ (2) | 19 mi |
| KPMB Enterprises | 5.0★ (2) | 20 mi |
| L E Abbott Plumbing & Heating | 1.0★ (1) | 3 mi |
| M2 Service Group | 5.0★ (2) | 12 mi |
| Meticulous Plumbing and Heating | 4.9★ (7) | 14 mi |
| Puckett Heating and AC | 4.9★ (11) | 15 mi |
| Pure Plumbing & Heating | 5.0★ (2) | 14 mi |
| Scho's Plumbing and Heating, LLC. | 5.0★ (21) | 8 mi |
| Seely Plumbing | 3.5★ (8) | 15 mi |
| Total Climate Control | 2.6★ (19) | 16 mi |
National price ranges in USD, not adjusted for Northfield. 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 Hampshire, 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 166 Northfield 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 Northfield 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 |