Top 50 of 318 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 Greenfield: Roman Home Services - Electric, Plumbing, Heating & Cooling, 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 | Roman Home Services - Electric, Plumbing, Heating & Cooling | 68 | 4.9★ (5,231) | West Allis, 4 mi away | 24/7 |
| 2 | Thielmann Heating, Cooling & Plumbing | 65 | 4.9★ (1,665) | New Berlin, 6 mi away | 24/7 |
| 3 | New Berlin Heating & Air Conditioning | 65 | 4.9★ (1,158) | New Berlin, 5 mi away | 24/7 |
| 4 | Mr. Holland's Home Services | 65 | 4.8★ (1,334) | New Berlin, 6 mi away | 24/7 |
| 5 | Southport Home Services | 64 | 4.8★ (2,067) | Caledonia, 10 mi away | 24/7 |
| 6 | Capital Heating, Cooling, Electric, and Plumbing | 64 | 4.7★ (2,977) | Menomonee Falls, 11 mi away | 24/7 |
| 7 | 1st Choice Heating & Cooling | 64 | 4.9★ (1,076) | Muskego, 9 mi away | 24/7 |
| 8 | Heating and Cooling Drs of West Allis, Milwaukee and New Berlin LLC | 64 | 4.9★ (288) | Milwaukee, 2 mi away | 24/7 |
| 9 | Quality Heating, Cooling, Plumbing & Electric | 64 | 4.9★ (1,113) | Brookfield, 10 mi away | 24/7 |
| 10 | Third Coast HVAC, AC & Furnace Repair | 64 | 5.0★ (436) | Brookfield, 6 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.
#1Roman Home Services - Electric, Plumbing, Heating & Cooling
Open 24/7 · 4.9 from 5,231 Google reviews
#2Thielmann Heating, Cooling & Plumbing
Open 24/7 · 4.9 from 1,665 Google reviews
#3New Berlin Heating & Air Conditioning
Open 24/7 · 4.9 from 1,158 Google reviews
Open 24/7 · 4.8 from 1,334 Google reviews
Open 24/7 · 4.8 from 2,067 Google reviews
#6Capital Heating, Cooling, Electric, and Plumbing
Open 24/7 · 4.7 from 2,977 Google reviews
#71st Choice Heating & Cooling
Open 24/7 · 4.9 from 1,076 Google reviews
#8Heating and Cooling Drs of West Allis, Milwaukee and New Berlin LLC
Open 24/7 · 4.9 from 288 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 318 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 in Greenfield
Based in West Allis, 4 mi away
Ranked #1 because of its Google rating and review volume: 4.9★ from 5,231 Google reviews.
Based in New Berlin, 6 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 1,665 Google reviews, listed on Google as “HVAC contractor”.
Based in New Berlin, 5 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 1,158 Google reviews, listed on Google as “HVAC contractor”.
Based in New Berlin, 6 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 1,334 Google reviews, listed on Google as “HVAC contractor”.
Based in Caledonia, 10 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 2,067 Google reviews, listed on Google as “HVAC contractor”.
Based in Menomonee Falls, 11 mi away
Ranked #6 because of its Google rating and trade focus: 4.7★ from 2,977 Google reviews, listed on Google as “HVAC contractor”.
Based in Muskego, 9 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 1,076 Google reviews, listed on Google as “HVAC contractor”.
Based in Milwaukee, 2 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 288 Google reviews, listed on Google as “HVAC contractor”.
Based in Brookfield, 10 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 1,113 Google reviews, listed on Google as “HVAC contractor”.
Based in Brookfield, 6 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 436 Google reviews, listed on Google as “HVAC contractor”.
Based in Oak Creek, 6 mi away
Ranked #11 because of its Google rating and trade focus: 4.7★ from 645 Google reviews, listed on Google as “HVAC contractor”.
Based in Delafield, 20 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 4,102 Google reviews, listed on Google as “HVAC contractor”.
Based in Brookfield, 8 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 482 Google reviews, listed on Google as “HVAC contractor”.
Based in Milwaukee, 15 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 2,027 Google reviews, listed on Google as “HVAC contractor”.
Based in Waukesha, 10 mi away
Ranked #15 because of its Google rating and trade focus: 4.6★ from 1,249 Google reviews, listed on Google as “Furnace repair service”.
Based in Wauwatosa, 5 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 247 Google reviews, listed on Google as “HVAC contractor”.
Based in West Allis, 4 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 198 Google reviews, listed on Google as “HVAC contractor”.
Based in Mukwonago, 17 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 2,376 Google reviews, listed on Google as “Air conditioning repair service”.
Based in Oak Creek, 6 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 307 Google reviews, listed on Google as “HVAC contractor”.
Based in West Allis, 3 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 176 Google reviews, listed on Google as “HVAC contractor”.
Based in Brookfield, 9 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 383 Google reviews, listed on Google as “HVAC contractor”.
Based in West Allis, 3 mi away
Ranked #22 because of its Google rating and trade focus: 4.7★ from 213 Google reviews, listed on Google as “HVAC contractor”.
Based in Waukesha, 11 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 446 Google reviews, listed on Google as “HVAC contractor”.
Based in South Milwaukee, 9 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 354 Google reviews, listed on Google as “HVAC contractor”.
Based in Brookfield, 8 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 222 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 |