Top 50 of 480 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank
25 of the 50 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.
#1 for emergency heating and cooling in Longmont: M and M Heating, Cooling, Plumbing and Electrical, open 24/7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
| Rank | Business | CR Score | Google rating | Based in | Hours |
|---|---|---|---|---|---|
| 1 | M and M Heating, Cooling, Plumbing and Electrical | 67 | 4.9★ (3,075) | Longmont | 24/7 |
| 2 | Welzig Heating, Air, Plumbing & Electric | 66 | 4.9★ (1,269) | Longmont | 24/7 |
| 3 | Blue Valley Heating & Cooling | 66 | 4.8★ (1,093) | Longmont | 24/7 |
| 4 | TNT Home Services - Longmont | 65 | 4.8★ (865) | Longmont | 24/7 |
| 5 | Colorado's Finest Heating and Air Conditioning | 64 | 4.9★ (205) | Longmont | 24/7 |
| 6 | Cooper Heating & Cooling | 63 | 4.8★ (4,647) | Broomfield, 18 mi away | 24/7 |
| 7 | DNI Heating, AC, Refrigeration, Plumbing & Electrical | 63 | 4.8★ (626) | Berthoud, 6 mi away | 24/7 |
| 8 | Jim Needham Heating Cooling Plumbing and Drain | 63 | 4.9★ (5,597) | Thornton, 23 mi away | 24/7 |
| 9 | Carbon Valley Heating and Air | 63 | 4.8★ (710) | Firestone, 9 mi away | 24/7 |
| 10 | IMS Heating & Air, Inc. | 63 | 4.8★ (1,518) | Berthoud, 14 mi away | 24/7 |
24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.
#1M and M Heating, Cooling, Plumbing and Electrical
Open 24/7 · 4.9 from 3,075 Google reviews
#2Welzig Heating, Air, Plumbing & Electric
Open 24/7 · 4.9 from 1,269 Google reviews
#3Blue Valley Heating & Cooling
Open 24/7 · 4.8 from 1,093 Google reviews
#4TNT Home Services - Longmont
Open 24/7 · 4.8 from 865 Google reviews
#5Colorado's Finest Heating and Air Conditioning
Open 24/7 · 4.9 from 205 Google reviews
Open 24/7 · 4.8 from 4,647 Google reviews
#7DNI Heating, AC, Refrigeration, Plumbing & Electrical
Open 24/7 · 4.8 from 626 Google reviews
#8Jim Needham Heating Cooling Plumbing and Drain
Open 24/7 · 4.9 from 5,597 Google reviews
24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 480 is on the HVAC contractors page.
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 3,075 Google reviews, listed on Google as “HVAC contractor”.
Based in Longmont
Ranked #2 because of its Google rating and trade focus: 4.9★ from 1,269 Google reviews, listed on Google as “HVAC contractor”.
Based in Longmont
Ranked #3 because of its Google rating and trade focus: 4.8★ from 1,093 Google reviews, listed on Google as “HVAC contractor”.
Based in Longmont
Ranked #4 because of its Google rating and trade focus: 4.8★ from 865 Google reviews, listed on Google as “HVAC contractor”.
Based in Longmont
Ranked #5 because of its Google rating and trade focus: 4.9★ from 205 Google reviews, listed on Google as “HVAC contractor”.
Based in Broomfield, 18 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 4,647 Google reviews, listed on Google as “HVAC contractor”.
Based in Berthoud, 6 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 626 Google reviews, listed on Google as “HVAC contractor”.
Based in Thornton, 23 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 5,597 Google reviews, listed on Google as “HVAC contractor”.
Based in Firestone, 9 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 710 Google reviews, listed on Google as “HVAC contractor”.
Based in Berthoud, 14 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 1,518 Google reviews, listed on Google as “Heating contractor”.
Based in Johnstown, 18 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 1,508 Google reviews, listed on Google as “HVAC contractor”.
Based in Longmont
Ranked #12 because of its Google rating and trade focus: 5.0★ from 87 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Loveland, 18 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 2,466 Google reviews, listed on Google as “HVAC contractor”.
Based in Loveland, 19 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 2,777 Google reviews, listed on Google as “HVAC contractor”.
Based in Frederick, 8 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 244 Google reviews, listed on Google as “HVAC contractor”.
Based in Boulder, 12 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 607 Google reviews, listed on Google as “HVAC contractor”.
Based in Frederick, 10 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 266 Google reviews, listed on Google as “HVAC contractor”.
Based in Longmont
Ranked #18 because of its Google rating and trade focus: 4.9★ from 58 Google reviews, listed on Google as “HVAC contractor”.
Based in Longmont
Ranked #19 because of its Google rating and trade focus: 4.9★ from 61 Google reviews, listed on Google as “HVAC contractor”.
Based in Fort Collins, 25 mi away
Ranked #20 because of its Google rating and review volume: 4.7★ from 5,912 Google reviews.
Based in Longmont
Ranked #21 because of its Google rating and trade focus: 4.8★ from 64 Google reviews, listed on Google as “HVAC contractor”.
Based in Boulder, 13 mi away
Ranked #22 because of its Google rating and trade focus: 4.7★ from 731 Google reviews, listed on Google as “HVAC contractor”.
Based in Longmont
Ranked #23 because of its Google rating and trade focus: 4.8★ from 57 Google reviews, listed on Google as “HVAC contractor”.
Based in Brighton, 5 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 94 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster, 18 mi away
Ranked #25 because of its Google rating and trade focus: 4.7★ from 1,623 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.
Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.
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 |
|---|---|---|
| Reputation | 15% | Google star rating, adjusted for how many reviews back it |
| Credentials | 15% | Active state license, bond and workers’ comp on file |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list |
| Recency | 5% | Share of reviews from the last 12 months |
| Availability | 15% | Weekly open hours, Saturday, Sunday, 24/7 or same-day |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) |
| Proximity | 5% | Based in the city scores highest, less the farther away it is |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are |