70 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Sedro-Woolley: Ronk Brothers Heating, Cooling, and Electrical, CR Score 66/100; 4.9★ from 841 Google reviews; open 24/7.
Best for emergencies (open 24/7): CM Heating, posts 24/7 hours; ranked #2 of 70.
Most-reviewed: CPI Plumbing & Heating, 2,955 Google reviews at 4.8★, the most of 70 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
70 Sedro-Woolley HVAC contractors are ranked here by CR Score, from ten published factors. 25 are open 24/7, 39 open Saturdays and 32 open Sundays, based on posted hours. The median Google rating is 4.8★ across 70 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Ronk Brothers Heating, Cooling, and Electrical | 66 | 4.9★ (841) | Sedro-Woolley | 24/7 | Overall |
| 2 | CM Heating | 66 | 5.0★ (1,208) | Mount Vernon, 6 mi away | 24/7 | Emergencies |
| 3 | Foss Heating & Cooling | 64 | 4.9★ (914) | Mount Vernon, 9 mi away | 24/7 | — |
| 4 | Marr's Heating, AC, Plumbing & Electrical | 62 | 4.9★ (1,749) | Bellingham, 22 mi away | 24/7 | — |
| 5 | CPI Plumbing & Heating | 62 | 4.8★ (2,955) | Mount Vernon, 8 mi away | 24/7 | Most reviews |
| 6 | Nordic Temperature Control | 61 | 4.8★ (117) | Burlington, 5 mi away | 24/7 | — |
| 7 | Clean Air Heating & Cooling | 61 | 4.9★ (757) | Bellingham, 21 mi away | 24/7 | — |
| 8 | Barron Heating AC Electrical & Plumbing | 60 | 4.9★ (839) | Burlington, 24 mi away | 24/7 | — |
| 9 | Handy's Heating | 60 | 4.5★ (198) | Mount Vernon, 8 mi away | 24/7 | — |
| 10 | CPI Plumbing, Heating & Cooling | 59 | 4.9★ (219) | Bellingham, 19 mi away | 24/7 | — |
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.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 841 Google reviews, listed on Google as “HVAC contractor”.
Based in Mount Vernon, 6 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 1,208 Google reviews, listed on Google as “HVAC contractor”.
Based in Mount Vernon, 9 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 914 Google reviews, listed on Google as “Heating contractor”.
Based in Bellingham, 22 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 1,749 Google reviews, listed on Google as “HVAC contractor”.
Based in Mount Vernon, 8 mi away
Ranked #5 because of its Google rating and review volume: 4.8★ from 2,955 Google reviews, the most in Sedro-Woolley.
Based in Burlington, 5 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 117 Google reviews, listed on Google as “HVAC contractor”.
Based in Bellingham, 21 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 757 Google reviews, listed on Google as “HVAC contractor”.
Based in Burlington, 24 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 839 Google reviews, listed on Google as “HVAC contractor”.
Based in Mount Vernon, 8 mi away
Ranked #9 because of its Google rating and trade focus: 4.5★ from 198 Google reviews, listed on Google as “HVAC contractor”.
Based in Bellingham, 19 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 219 Google reviews, listed on Google as “HVAC contractor”.
Based in Bellingham, 24 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 1,264 Google reviews, listed on Google as “HVAC contractor”.
Based in Marysville, 24 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 625 Google reviews, listed on Google as “HVAC contractor”.
Based in Anacortes, 17 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 99 Google reviews, listed on Google as “HVAC contractor”.
Based in Arlington, 22 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 226 Google reviews, listed on Google as “HVAC contractor”.
Based in Anacortes, 18 mi away
Ranked #15 because of its Google rating and trade focus: 4.6★ from 264 Google reviews, listed on Google as “HVAC contractor”.
Based in Burlington, 6 mi away
Ranked #16 because of its Google rating and trade focus: 4.3★ from 43 Google reviews, listed on Google as “HVAC contractor”.
Based in Burlington, 6 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “HVAC contractor”.
Based in Camano, 12 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 92 Google reviews, listed on Google as “HVAC contractor”.
Based in Mount Vernon, 7 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 64 Google reviews, listed on Google as “Plumber”.
Based in Oak Harbor, 24 mi away
Ranked #20 because of its Google rating and review volume: 4.9★ from 784 Google reviews.
Based in Camano, 18 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 554 Google reviews, listed on Google as “HVAC contractor”.
Based in Sedro-Woolley
Ranked #22 because of its Google rating and trade focus: 4.9★ from 29 Google reviews, listed on Google as “HVAC contractor”.
Based in Ferndale, 13 mi away
Ranked #23 because of its Google rating and trade focus: 4.5★ from 10 Google reviews, listed on Google as “HVAC contractor”.
Based in Sedro-Woolley
Ranked #24 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “HVAC contractor”.
Based in Burlington, 3 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 36 Google reviews, listed on Google as “HVAC contractor”.
#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 70 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 |
|---|---|---|
| Action Plumbing & Heating | 5.0★ (1) | In Sedro-Woolley |
| All-Ways Air Control | 3.2★ (9) | 19 mi |
| Apex Radiant Heating | 5.0★ (2) | 7 mi |
| ASAP Water Heating | 5.0★ (11) | 19 mi |
| Bellingham Furnace & Air Conditioning Repair | 5.0★ (2) | 23 mi |
| Bellingham Heating and Cooling | 13 mi | |
| Bellingham Heating and Cooling LLC | 5.0★ (1) | 13 mi |
| Brothers Hvac Inc. | 13 mi | |
| CEM Heating Inc | 5.0★ (1) | 14 mi |
| Jones Plumbing & Heating | 1.0★ (1) | 23 mi |
| Kayn's Heating and Cooling | 5.0★ (2) | 23 mi |
| LaVergne's Plumbing & Heating | 3.7★ (3) | 24 mi |
| Marshall's Heating & AC | 4.2★ (5) | 23 mi |
| Mount Vernon HVAC Pros | 5.0★ (1) | 24 mi |
| NORTHWEST HEATING SERVICES LLC | 4.0★ (2) | 14 mi |
| Pacific Northwest Refrigeration & Heating | 4 mi | |
| Peak Heating & Cooling | 5.0★ (2) | 24 mi |
| Thomas Mechanical | 5.0★ (2) | 23 mi |
| Twin City Plumbing & Radiant Heat Inc. | 3.0★ (2) | 19 mi |
| Washington Air Conditioning Systems | 5.0★ (1) | 17 mi |
National price ranges in USD, not adjusted for Sedro-Woolley. 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 |
Washington's HVAC demand peaks during summer heat waves and the first cold snaps. Spring and fall are the easiest times to book maintenance.
We scored 70 Sedro-Woolley 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 23, 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 Sedro-Woolley 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 |