66 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Watertown: Pat's Heating & Air Conditioning, CR Score 64/100; 5.0★ from 1,747 Google reviews; open 24/7.
Best for emergencies (open 24/7): Kettle Moraine Heating & Air Conditioning, LLC, posts 24/7 hours; ranked #2 of 66.
Most-reviewed: Kettle Moraine Heating & Air Conditioning, LLC, 4,102 Google reviews at 4.9★, the most of 66 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
66 Watertown HVAC contractors are ranked here by CR Score, from ten published factors. 26 are open 24/7, 30 open Saturdays and 27 open Sundays, based on posted hours. The median Google rating is 4.9★ across 66 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Pat's Heating & Air Conditioning | 64 | 5.0★ (1,747) | Oconomowoc, 15 mi away | 24/7 | Overall |
| 2 | Kettle Moraine Heating & Air Conditioning, LLC | 63 | 4.9★ (4,102) | Delafield, 21 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Carew Heating & AC, Inc. | 61 | 4.9★ (1,166) | Watertown | — | — |
| 4 | Aire Serv of Oconomowoc | 61 | 4.9★ (291) | Oconomowoc, 13 mi away | 24/7 | — |
| 5 | Countryside Heating and Cooling | 59 | 4.9★ (56) | Brookfield, 9 mi away | 24/7 | — |
| 6 | Kelchner's Arctic Air | 59 | 4.9★ (63) | Oconomowoc, 11 mi away | 24/7 | — |
| 7 | Dave Droegkamp Heating, Cooling & Air Quality | 59 | 4.9★ (299) | Hartland, 20 mi away | 24/7 | — |
| 8 | Thielmann Heating, Cooling & Plumbing | 59 | 4.9★ (409) | Slinger, 24 mi away | 24/7 | — |
| 9 | JM Heating and Cooling | 59 | 5.0★ (272) | Slinger, 24 mi away | 24/7 | — |
| 10 | Yoders Heating & Cooling LLC | 59 | 4.9★ (149) | Delafield, 18 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: 5.0★ from 1,747 Google reviews, listed on Google as “HVAC contractor”.
Based in Delafield, 21 mi away
Ranked #2 because of its Google rating and review volume: 4.9★ from 4,102 Google reviews, the most in Watertown.
Based in Watertown
Ranked #3 because of its Google rating and trade focus: 4.9★ from 1,166 Google reviews, listed on Google as “HVAC contractor”.
Based in Oconomowoc, 13 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 291 Google reviews, listed on Google as “HVAC contractor”.
Based in Brookfield, 9 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 in Oconomowoc, 11 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 63 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Hartland, 20 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 299 Google reviews, listed on Google as “HVAC contractor”.
Based in Slinger, 24 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 409 Google reviews, listed on Google as “HVAC contractor”.
Based in Slinger, 24 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 272 Google reviews, listed on Google as “HVAC contractor”.
Based in Delafield, 18 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 149 Google reviews, listed on Google as “HVAC contractor”.
Based in Cottage Grove, 24 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 362 Google reviews, listed on Google as “HVAC contractor”.
Based in Hartland, 20 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 1,804 Google reviews, listed on Google as “HVAC contractor”.
Based in Oconomowoc, 20 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 117 Google reviews, listed on Google as “HVAC contractor”.
Based in Hartland, 17 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “HVAC contractor”.
Based in Watertown
Ranked #15 because of its Google rating and trade focus: 4.7★ from 112 Google reviews, listed on Google as “HVAC contractor”.
Based in Watertown
Ranked #16 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Oconomowoc, 15 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “HVAC contractor”.
Based in Beaver Dam, 21 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “HVAC contractor”.
Based in Watertown
Ranked #19 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “HVAC contractor”.
Based in Jefferson, 13 mi away
Ranked #20 because of its Google rating and trade focus: 4.7★ from 36 Google reviews, listed on Google as “HVAC contractor”.
Based in Hartland, 20 mi away
Ranked #21 because of its Google rating and trade focus: 4.6★ from 49 Google reviews, listed on Google as “HVAC contractor”.
Based in Beaver Dam, 18 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 479 Google reviews, listed on Google as “HVAC contractor”.
Based in Oconomowoc, 11 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “HVAC contractor”.
Based in Watertown
Ranked #24 because of its Google rating and trade focus: 4.6★ from 33 Google reviews, listed on Google as “HVAC contractor”.
Based in Delafield, 18 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 307 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 66 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 |
|---|---|---|
| All State Heating & Air Conditioning | 5.0★ (1) | 20 mi |
| Arctic Air LLC | 5.0★ (1) | 21 mi |
| Assured Heating & Cooling Inc | 3.1★ (36) | 25 mi |
| Beckers Heating and Air | 5.0★ (1) | 8 mi |
| Bittner Heating & Cooling | 5.0★ (2) | 15 mi |
| Brisc Plumbing | 4.9★ (555) | In Watertown |
| Butters Fetting Co | 5.0★ (1) | 14 mi |
| Cool Breeze or Fire Heating and Cooling | 1.0★ (2) | 13 mi |
| Custom Aire Heating | 4.0★ (1) | 24 mi |
| Daiker Heating & Air Conditioning, Inc. | 5.0★ (1) | 25 mi |
| Emergency Disaster Recovery INC ᵀᴹ | 4.8★ (33) | 20 mi |
| Hanson Heating | 5.0★ (2) | 18 mi |
| Lake Country Heating & Cooling | 3.5★ (2) | 14 mi |
| Pauli Plumbing Inc | 4.6★ (36) | In Watertown |
| R Plumbing Inc | 4.9★ (337) | In Watertown |
| Roman Repairs | 6 mi | |
| Sawejka Enterprises | 18 mi | |
| Sure-Fire Inc | 5.0★ (2) | 19 mi |
| Thermo-Tech Mechanical | 4.3★ (6) | In Watertown |
| Total Comfort Insulation | 5.0★ (1) | 17 mi |
National price ranges in USD, not adjusted for Watertown. 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 66 Watertown 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 Watertown 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 |