160 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Lake Geneva: Master Services Inc., CR Score 64/100; 4.7★ from 976 Google reviews; open 24/7.
Best for emergencies (open 24/7): H. J. Faust, Inc. Heating and Air Conditioning, posts 24/7 hours; ranked #2 of 160.
Most-reviewed: Black Diamond Plumbing & Mechanical Inc., 6,580 Google reviews at 4.9★, the most of 160 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
160 Lake Geneva HVAC contractors are ranked here by CR Score, from ten published factors. 75 are open 24/7, 103 open Saturdays and 85 open Sundays, based on posted hours. The median Google rating is 4.9★ across 160 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Master Services Inc. | 64 | 4.7★ (976) | Lake Geneva | 24/7 | Overall |
| 2 | H. J. Faust, Inc. Heating and Air Conditioning | 63 | 4.9★ (1,340) | Burlington, 10 mi away | 24/7 | Emergencies |
| 3 | American Heating And Air Plus LLC | 63 | 4.9★ (174) | Lake Geneva | 24/7 | — |
| 4 | Black Diamond Plumbing & Mechanical Inc. | 63 | 4.9★ (6,580) | McHenry, 21 mi away | 24/7 | Most reviews |
| 5 | Thielmann Heating, Cooling & Plumbing | 62 | 5.0★ (458) | Burlington, 10 mi away | 24/7 | — |
| 6 | Edelman Heating, Cooling, Plumbing, Electric & Solar | 61 | 4.8★ (396) | Elkhorn, 9 mi away | 24/7 | — |
| 7 | Midwest Heating & Cooling | 61 | 4.8★ (2,376) | Mukwonago, 20 mi away | 24/7 | — |
| 8 | Woodstock Heating, Cooling & Electrical | 61 | 4.9★ (1,222) | Woodstock, 19 mi away | 24/7 | — |
| 9 | Comfort Cavalry Heating & Air | 61 | 4.9★ (1,086) | Antioch, 19 mi away | 24/7 | — |
| 10 | Command Service Center, INC | 61 | 5.0★ (745) | Antioch, 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: 4.7★ from 976 Google reviews, listed on Google as “HVAC contractor”.
Based in Burlington, 10 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 1,340 Google reviews, listed on Google as “Heating contractor”.
Based in Lake Geneva
Ranked #3 because of its Google rating and trade focus: 4.9★ from 174 Google reviews, listed on Google as “HVAC contractor”.
Based in McHenry, 21 mi away
Ranked #4 because of its Google rating and review volume: 4.9★ from 6,580 Google reviews, the most in Lake Geneva.
Based in Burlington, 10 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 458 Google reviews, listed on Google as “Heating contractor”.
Based in Elkhorn, 9 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 396 Google reviews, listed on Google as “HVAC contractor”.
Based in Mukwonago, 20 mi away
Ranked #7 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 Woodstock, 19 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 1,222 Google reviews, listed on Google as “HVAC contractor”.
Based in Antioch, 19 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 1,086 Google reviews, listed on Google as “HVAC contractor”.
Based in Antioch, 19 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 745 Google reviews, listed on Google as “HVAC contractor”.
Based in Elkhorn, 9 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 277 Google reviews, listed on Google as “HVAC contractor”.
Based in Waterford, 17 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 448 Google reviews, listed on Google as “Heating contractor”.
Based in Woodstock, 21 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 747 Google reviews, listed on Google as “HVAC contractor”.
Based in Round Lake, 23 mi away
Ranked #14 because of its Google rating and trade focus: 4.7★ from 2,290 Google reviews, listed on Google as “HVAC contractor”.
Based in Antioch, 18 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 235 Google reviews, listed on Google as “HVAC contractor”.
Based in Waterford, 17 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 201 Google reviews, listed on Google as “HVAC contractor”.
Based in Lake Geneva
Ranked #17 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “HVAC contractor”.
Based in Antioch, 19 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 374 Google reviews, listed on Google as “HVAC contractor”.
Based in McHenry, 21 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 596 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Fox Lake, 19 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 371 Google reviews, listed on Google as “HVAC contractor”.
Based in Johnsburg, 16 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 158 Google reviews, listed on Google as “Heating contractor”.
Based in Fox Lake, 10 mi away
Ranked #22 because of its Google rating and trade focus: 4.7★ from 69 Google reviews, listed on Google as “HVAC contractor”.
Based in Fox Lake, 10 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Heating contractor”.
Based in Woodstock, 15 mi away
Ranked #24 because of its Google rating and trade focus: 4.7★ from 185 Google reviews, listed on Google as “HVAC contractor”.
Based in Crystal Lake, 25 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 472 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 160 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 Hartlett & Son | 4.5★ (2) | 19 mi |
| A J Electric Heating & Cooling | In Lake Geneva | |
| A.B.D. Heating & Cooling | 5.0★ (38) | 22 mi |
| Air Management Services Inc | 4.0★ (2) | 15 mi |
| All-Pro Plumbing & Heating Inc | In Lake Geneva | |
| Biermann Heating & Air Conditioning | 4.9★ (45) | 22 mi |
| Bob's Refrigeration heating and air conditioning inc | 4.6★ (9) | 12 mi |
| Derek's Plumbing & Hydronic | 5.0★ (1) | 8 mi |
| Eagle Refrigeration Service | 4.5★ (2) | 15 mi |
| Hartwig Plumbing & Heating | 5.0★ (1) | 15 mi |
| Karsten Heating & Cooling | 5.0★ (1) | 12 mi |
| Koch Indoor Weather Inc | 5.0★ (1) | 18 mi |
| Maki & Associates Heating & Air Conditioning | 4.6★ (27) | 19 mi |
| Mannina Creations | 5.0★ (2) | 20 mi |
| McHenry Air Conditioning Service | 5.0★ (1) | 16 mi |
| Rise Plumbing | 5.0★ (1) | 19 mi |
| RTU Replacement Specialists, LLC | 5.0★ (1) | 18 mi |
| Target Mechanical, Inc. | 5.0★ (1) | 19 mi |
| The Heating & Air Conditioning Co | 5.0★ (1) | 19 mi |
| Tindall Heating & Cooling LLC | 5.0★ (1) | 19 mi |
National price ranges in USD, not adjusted for Lake Geneva. 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 Wisconsin, 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 160 Lake Geneva 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 Lake Geneva 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 |