41 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Fond du Lac: Air Tech Heating, Inc., CR Score 66/100; 4.8★ from 604 Google reviews; open 24/7.
Best for emergencies (open 24/7): Greg Steger Heating and Air, posts 24/7 hours; ranked #2 of 41.
Most-reviewed: Brewer Heating, Inc., 1,570 Google reviews at 5.0★, the most of 41 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
41 Fond du Lac HVAC contractors are ranked here by CR Score, from ten published factors. 6 are open 24/7, 10 open Saturdays and 10 open Sundays, based on posted hours. The median Google rating is 4.8★ across 41 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Air Tech Heating, Inc. | 66 | 4.8★ (604) | Fond du Lac | 24/7 | Overall |
| 2 | Greg Steger Heating and Air | 59 | 4.8★ (356) | Plymouth, 23 mi away | 24/7 | Emergencies |
| 3 | Brewer Heating, Inc. | 59 | 5.0★ (1,570) | Ripon, 20 mi away | — | Most reviews |
| 4 | Air Tech Heating, Inc. | 57 | 4.9★ (65) | Ripon, 21 mi away | 24/7 | — |
| 5 | Performance Heating & Air | 57 | 4.9★ (56) | Plymouth, 21 mi away | 24/7 | — |
| 6 | HomeTown Heating & Cooling | 55 | 5.0★ (22) | Oshkosh, 23 mi away | 24/7 | — |
| 7 | All-Phase HVAC LLC | 55 | 5.0★ (156) | Waupun, 18 mi away | — | — |
| 8 | E. C. Merrill, Inc. | 55 | 4.8★ (23) | North Fond du Lac, 3 mi away | — | — |
| 9 | Fenner Plumbing & Heating Inc. | 55 | 5.0★ (12) | Fond du Lac | — | — |
| 10 | A&BE Heating and Cooling, LLC | 55 | 4.8★ (75) | Oshkosh, 20 mi away | — | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 604 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Plymouth, 23 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 356 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ripon, 20 mi away
Ranked #3 because of its Google rating and review volume: 5.0★ from 1,570 Google reviews, the most in Fond du Lac.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ripon, 21 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 65 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Plymouth, 21 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 56 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Oshkosh, 23 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waupun, 18 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 156 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in North Fond du Lac, 3 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 23 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fond du Lac
Ranked #9 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Oshkosh, 20 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 75 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Fond du Lac
Ranked #11 because of its Google rating and trade focus: 4.8★ from 12 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fond du Lac
Ranked #12 because of its Google rating and trade focus: 4.1★ from 33 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Oshkosh, 17 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 141 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ripon, 20 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 207 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waupun, 19 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “HVAC contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Oshkosh, 20 mi away
Ranked #16 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fond du Lac
Ranked #17 because of its Google rating and trade focus: 4.0★ from 24 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fond du Lac
Ranked #18 because of its Google rating and trade focus: 2.0★ from 5 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Fond du Lac
Ranked #19 because of its Google rating and trade focus: 4.8★ from 44 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Oshkosh, 15 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 34 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in West Bend, 21 mi away
Ranked #21 because of its Google rating and trade focus: 4.7★ from 33 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Fond du Lac
Ranked #22 because of its Google rating and trade focus: 4.8★ from 42 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fond du Lac
Ranked #23 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ripon, 22 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 26 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Oshkosh, 17 mi away
Ranked #25 because of its Google rating and trade focus: 3.7★ from 6 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #41, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Caldera A/C & Heating LLC | 52 | 2.3★ (64) | In Fond du Lac |
| 27 | American Heating & Air Conditioning | 52 | 5.0★ (3) | 17 mi |
| 28 | Thompson Heating and Cooling Services | 52 | 5.0★ (27) | 17 mi |
| 29 | Gartman Mechanical Services | 52 | 4.5★ (55) | 17 mi |
| 30 | Hansen Refrigeration Mach Co | 52 | 2.3★ (3) | In Fond du Lac |
| 31 | Anderson HVAC LLC | 51 | 4.7★ (31) | 17 mi |
| 32 | Haucke Plumbing & Heating Inc | 51 | 4.7★ (76) | 23 mi |
| 33 | Reliable Plumbing & Heating | 51 | 5.0★ (19) | 17 mi |
| 34 | Rasmussen's Heating & Air Conditioning | 50 | 4.8★ (4) | 19 mi |
| 35 | Wesley Heating & Cooling | 49 | 4.3★ (28) | 21 mi |
| 36 | Andresen Sheet Metal Heating & Cooling | 49 | 5.0★ (8) | 19 mi |
| 37 | Stobb Plumbing & Heating, Inc. | 49 | 4.0★ (17) | 19 mi |
| 38 | Steiner's Heating & Cooling | 48 | 4.7★ (12) | 23 mi |
| 39 | Distinct Air | 48 | 5.0★ (4) | 22 mi |
| 40 | R D Quinn Plumbing & Heating | 47 | 5.0★ (5) | 24 mi |
| 41 | Plymouth Plumbing & Heating | 47 | 4.6★ (74) | 25 mi |
11 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 |
|---|---|---|
| Absolute Air Care LLC | 5.0★ (1) | 21 mi |
| Ahern Gross Plumbing Contractors | 4.5★ (44) | In Fond du Lac |
| Best Mechanical | 17 mi | |
| C.H. Koch Plumbing & Heating Inc | 5.0★ (1) | 23 mi |
| Condon Total Comfort Inc | 19 mi | |
| E. C. Merrill, Inc. | 5.0★ (1) | 11 mi |
| HVAC Armor | 20 mi | |
| HVAC Armor Oshkosh | 3.0★ (1) | 18 mi |
| HVAC Contractors | 20 mi | |
| Precision Balancing Group LLC | In Fond du Lac | |
| Quality Control Services (Temperature Control Mechanical Systems Specialists) | 5.0★ (1) | In Fond du Lac |
National price ranges in USD, not adjusted for Fond du Lac. 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 41 Fond du Lac 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 Fond du Lac 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 |