65/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 7,086 Google reviews.
- 4.8★ from 7,086 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- W204N16635 Jackson Dr, Jackson, WI 53037
Emergency HVAC Contractors in Hartford, WI (2026)
Top 50 of 172 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.
If you smell gas, leave the building now and call your gas utility or 911 from outside.
The short answer
- 1
#1 for emergency heating and cooling in Hartford: Mr. Holland's Home Services, open 24/7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
Top emergency HVAC contractors in Hartford at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours |
|---|---|---|---|---|---|
| 1 | Mr. Holland's Home Services | 65 | 4.8★ (7,086) | Jackson, 11 mi away | 24/7 |
| 2 | Thielmann Heating, Cooling & Plumbing | 63 | 4.9★ (409) | Slinger, 4 mi away | 24/7 |
| 3 | JM Heating and Cooling | 63 | 5.0★ (272) | Slinger, 4 mi away | 24/7 |
| 4 | Pat's Heating & Air Conditioning | 62 | 5.0★ (1,747) | Oconomowoc, 18 mi away | 24/7 |
| 5 | Kettle Moraine Heating & Air Conditioning, LLC | 62 | 4.9★ (4,102) | Delafield, 21 mi away | 24/7 |
| 6 | Albiero Plumbing & HVAC | 62 | 4.8★ (721) | West Bend, 13 mi away | 24/7 |
| 7 | Interstate Heating Co., Inc. | 62 | 4.9★ (932) | Sussex, 16 mi away | 24/7 |
| 8 | Capital Heating, Cooling, Electric, and Plumbing | 61 | 4.7★ (2,977) | Menomonee Falls, 21 mi away | 24/7 |
| 9 | Quality Heating, Cooling, Plumbing & Electric | 61 | 4.9★ (1,113) | Brookfield, 21 mi away | 24/7 |
| 10 | Burkhardt Heating, Cooling, Plumbing & Electric | 60 | 4.8★ (2,027) | Milwaukee, 23 mi away | 24/7 |
Call an emergency HVAC contractor in Hartford now
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.
- #1Call (866) 992-1717
Open 24/7 · 4.8 from 7,086 Google reviews
- #2Call (262) 683-5261
#2Thielmann Heating, Cooling & Plumbing
Open 24/7 · 4.9 from 409 Google reviews
- #3Call (262) 229-7571
Open 24/7 · 5.0 from 272 Google reviews
- #4Call (262) 661-2411
#4Pat's Heating & Air Conditioning
Open 24/7 · 5.0 from 1,747 Google reviews
- #5Call (262) 397-9500
#5Kettle Moraine Heating & Air Conditioning, LLC
Open 24/7 · 4.9 from 4,102 Google reviews
- #6Call (262) 214-0988
Open 24/7 · 4.8 from 721 Google reviews
- #7Call (262) 372-2772
#7Interstate Heating Co., Inc.
Open 24/7 · 4.9 from 932 Google reviews
- #8Call (414) 246-1184
#8Capital Heating, Cooling, Electric, and Plumbing
Open 24/7 · 4.7 from 2,977 Google reviews
The 50 emergency HVAC contractors in Hartford, ranked
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 172 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.
Based in Slinger, 4 mi away
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 409 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 409 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 105 W Commerce Blvd, Slinger, WI 53086
Based in Slinger, 4 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 272 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 272 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 122 W Commerce Blvd Unit C, Slinger, WI 53086
Based in Oconomowoc, 18 mi away
62/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 1,747 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 1,747 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1833 Executive Dr, Oconomowoc, WI 53066
Based in Delafield, 21 mi away
62/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 4,102 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 4,102 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- W325 S1767, Mickle Rd, Delafield, WI 53018
Based in West Bend, 13 mi away
62/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 721 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 721 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1940 N Main St, West Bend, WI 53090
Based in Sussex, 16 mi away
62/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 932 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 932 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- N53 W24950 S Corporate Cir, Sussex, WI 53089
Based in Menomonee Falls, 21 mi away
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.7★ from 2,977 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 2,977 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- W134 N5368 Campbell Dr, Menomonee Falls, WI 53051
Based in Brookfield, 21 mi away
61/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 1,113 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,113 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2840 N Brookfield Rd Ste 2, Brookfield, WI 53045
Based in Milwaukee, 23 mi away
60/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 2,027 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 2,027 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8232 N Teutonia Ave, Milwaukee, WI 53209
Based in Sussex, 16 mi away
60/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 279 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 279 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- N63W22633 Main St Ste. 107, Sussex, WI 53089
Based in Germantown, 21 mi away
60/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 682 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 682 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 113 Riverview Dr, Thiensville, WI 53092
Based in Hartland, 15 mi away
60/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 299 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 299 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 540 Norton Dr, Hartland, WI 53029
Based in Oconomowoc, 16 mi away
60/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 291 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 291 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 535 E Wisconsin Ave, Oconomowoc, WI 53066
Based in Port Washington, 25 mi away
60/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 1,382 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,382 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1100 Bywater Dr #100, Port Washington, WI 53074
Based in Waukesha, 22 mi away
59/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.6★ from 1,249 Google reviews, listed on Google as “Furnace repair service”.
- 4.6★ from 1,249 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 20711 Watertown Rd Suite D, Waukesha, WI 53186
Based in Grafton, 21 mi away
59/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 445 Google reviews, listed on Google as “Furnace repair service”.
- 4.9★ from 445 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1201 6th Ave, Grafton, WI 53024
Based in Hartford
59/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 11 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
#19 TRAG HVAC, LLC
Based in Beaver Dam, 7 mi away
59/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 35 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Waukesha, 21 mi away
59/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 262 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 262 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- W220N1560 Jericho Ct, Waukesha, WI 53186
Based in Waukesha, 24 mi away
59/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 446 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 446 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 323 W Sunset Dr, Waukesha, WI 53189
Based in Brookfield, 23 mi away
59/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 482 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 482 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 405 N Calhoun Rd, Brookfield, WI 53005
Based in Mequon, 24 mi away
59/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 487 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 487 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11512 N Port Washington Rd Suite 201K, Mequon, WI 53092
Based in Brookfield, 23 mi away
59/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 383 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 383 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3260 N 126th St, Brookfield, WI 53005
Based in Mequon, 21 mi away
58/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.7★ from 405 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 405 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6300 W Donges Bay Rd, Mequon, WI 53092
Top 50 of 172 HVAC contractors by emergency score
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.
How we ranked emergency HVAC contractors in Hartford
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 |
Emergency HVAC contractors in Hartford: questions
Which HVAC contractors in Hartford are open 24/7?
25 on this list post 24/7 hours, including Mr. Holland's Home Services, Thielmann Heating, Cooling & Plumbing, JM Heating and Cooling, Pat's Heating & Air Conditioning and Kettle Moraine Heating & Air Conditioning, LLC.
Who is ranked #1 for emergency heating and cooling in Hartford, WI?
Mr. Holland's Home Services is #1, with a CR Score of 65 out of 100 on emergency weights.
How are emergency HVAC contractors in Hartford ranked?
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.
What should I do before the HVAC contractor arrives?
If you smell gas, leave the building now and call your gas utility or 911 from outside.
How many emergency HVAC contractors here list a phone number?
25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.
Update log for Hartford
- October 2026: CR Scores recalculated for 172 hvac contractors serving Hartford.