958 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Thornton: Jim Needham Heating Cooling Plumbing and Drain, CR Score 67/100; 4.9★ from 5,597 Google reviews; open 24/7.
Best for emergencies (open 24/7): Absolute Plumbing, Electrical, Heating & Air, posts 24/7 hours; ranked #2 of 958.
Most-reviewed: Plumbline Services, 9,085 Google reviews at 4.7★, the most of 958 ranked; ranked #37.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
958 Thornton HVAC contractors are ranked here by CR Score, from ten published factors. 372 are open 24/7, 663 open Saturdays and 525 open Sundays, based on posted hours. The median Google rating is 4.9★ across 958 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Jim Needham Heating Cooling Plumbing and Drain | 67 | 4.9★ (5,597) | Thornton | 24/7 | Overall |
| 2 | Absolute Plumbing, Electrical, Heating & Air | 64 | 4.9★ (3,583) | Denver, 8 mi away | 24/7 | Emergencies |
| 3 | Impact Heating & Cooling Inc. | 64 | 4.9★ (893) | Thornton | 24/7 | — |
| 4 | Cooper Heating & Cooling | 64 | 4.8★ (4,647) | Broomfield, 7 mi away | 24/7 | — |
| 5 | Swan Plumbing, Heating & Air of Denver | 64 | 4.8★ (3,443) | Commerce City, 6 mi away | 24/7 | — |
| 6 | Golden West Plumbing, Heating, Air Conditioning, and Electrical | 64 | 4.8★ (3,635) | Denver, 7 mi away | 24/7 | — |
| 7 | Plumbline Services | 64 | 4.9★ (1,917) | Arvada, 7 mi away | 24/7 | — |
| 8 | Brothers Plumbing, Heating, and Electric - Denver | 63 | 4.7★ (8,479) | Denver, 4 mi away | Sat · Sun · Evenings | — |
| 9 | Unique Heating and Air Conditioning Inc. | 63 | 4.8★ (761) | Northglenn, 2 mi away | 24/7 | — |
| 10 | Allen Service | 63 | 4.7★ (1,589) | Commerce City, 4 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 5,597 Google reviews, listed on Google as “HVAC contractor”.
Based in Denver, 8 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 3,583 Google reviews, listed on Google as “HVAC contractor”.
Based in Thornton
Ranked #3 because of its Google rating and trade focus: 4.9★ from 893 Google reviews, listed on Google as “HVAC contractor”.
Based in Broomfield, 7 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 4,647 Google reviews, listed on Google as “HVAC contractor”.
Based in Commerce City, 6 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 3,443 Google reviews, listed on Google as “HVAC contractor”.
Based in Denver, 7 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 3,635 Google reviews, listed on Google as “HVAC contractor”.
Based in Arvada, 7 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 1,917 Google reviews, listed on Google as “HVAC contractor”.
Based in Denver, 4 mi away
Ranked #8 because of its Google rating and trade focus: 4.7★ from 8,479 Google reviews, listed on Google as “HVAC contractor”.
Based in Northglenn, 2 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 761 Google reviews, listed on Google as “HVAC contractor”.
Based in Commerce City, 4 mi away
Ranked #10 because of its Google rating and trade focus: 4.7★ from 1,589 Google reviews, listed on Google as “HVAC contractor”.
Based in Wheat Ridge, 8 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 1,352 Google reviews, listed on Google as “HVAC contractor”.
Based in Denver, 3 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 565 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster, 4 mi away
Ranked #13 because of its Google rating and trade focus: 4.7★ from 1,623 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster, 5 mi away
Ranked #14 because of its Google rating and trade focus: 4.7★ from 1,928 Google reviews, listed on Google as “HVAC contractor”.
Based in Denver, 10 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 2,877 Google reviews, listed on Google as “HVAC contractor”.
Based in Denver, 6 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 1,215 Google reviews, listed on Google as “HVAC contractor”.
Based in Thornton
Ranked #17 because of its Google rating and trade focus: 4.8★ from 305 Google reviews, listed on Google as “HVAC contractor”.
Based in Denver, 9 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 1,846 Google reviews, listed on Google as “HVAC contractor”.
Based in Thornton
Ranked #19 because of its Google rating and trade focus: 4.9★ from 575 Google reviews, listed on Google as “HVAC contractor”.
Based in Thornton
Ranked #20 because of its Google rating and trade focus: 4.9★ from 161 Google reviews, listed on Google as “HVAC contractor”.
Based in Thornton
Ranked #21 because of its Google rating and trade focus: 4.8★ from 225 Google reviews, listed on Google as “HVAC contractor”.
Based in Golden, 13 mi away
Ranked #22 because of its Google rating and trade focus: 4.7★ from 4,159 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster, 7 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 1,041 Google reviews, listed on Google as “HVAC contractor”.
Based in Aurora, 14 mi away
Ranked #24 because of its Google rating and trade focus: 4.7★ from 4,465 Google reviews, listed on Google as “HVAC contractor”.
Based in Denver, 13 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 2,301 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 958 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 |
|---|---|---|
| A Frank of All Trades | 5.0★ (2) | 8 mi |
| Air Control Services | 5.0★ (2) | 11 mi |
| All A/C & Heating Solutions, Inc | 5.0★ (377) | 12 mi |
| Allen's Heating Air Conditioning & Sheet Metal Inc | 5.0★ (2) | 7 mi |
| Altitude Building Automation | 5.0★ (2) | 8 mi |
| ARS / Rescue Rooter | 4.5★ (3,114) | 13 mi |
| ASI Heating and Air Conditioning | 5.0★ (2) | 3 mi |
| Daniel & Donna Plumbing Service, Inc - Broomfield, CO | 4.8★ (267) | 8 mi |
| Furnace AC Store | 1.0★ (2) | 5 mi |
| GE Heating & Air, LLC | 4.7★ (148) | 4 mi |
| HVAC Thornton Pros | 5.0★ (1) | In Thornton |
| KEY Heating and Air, LLC | 5.0★ (2) | In Thornton |
| Moreno HVAC LLC | 5.0★ (2) | 7 mi |
| Northern Climate Control | 5.0★ (2) | 5 mi |
| Porter Family Heating & Cooling | 4.8★ (52) | In Thornton |
| Pro Heat HVAC Services LLC | In Thornton | |
| ProSolutions Plumbing & Heating | 3.0★ (2) | 10 mi |
| Steel T Home Services | 4.8★ (906) | 14 mi |
| Valley Mechanical | 5.0★ (2) | 7 mi |
| Vetter heating and air conditioning LLC | 5.0★ (2) | 6 mi |
National price ranges in USD, not adjusted for Thornton. 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 Colorado, 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 958 Thornton 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 Thornton 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 |