83 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Sun Prairie: Cardinal Heating, Cooling, Plumbing & Electric, CR Score 68/100; 4.9★ from 4,888 Google reviews; open 24/7.
Best for emergencies (open 24/7): Action Plumbing, Heating, Air Conditioning and Electric, Inc., posts 24/7 hours; ranked #2 of 83.
Most-reviewed: All Comfort Services, 3,441 Google reviews at 4.8★, the most of 83 ranked after Cardinal Heating, Cooling, Plumbing & Electric; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
83 Sun Prairie HVAC contractors are ranked here by CR Score, from ten published factors. 23 are open 24/7, 38 open Saturdays and 33 open Sundays, based on posted hours. The median Google rating is 4.8★ across 83 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Cardinal Heating, Cooling, Plumbing & Electric | 68 | 4.9★ (4,888) | Sun Prairie | 24/7 | Overall |
| 2 | Action Plumbing, Heating, Air Conditioning and Electric, Inc. | 65 | 4.7★ (1,128) | Sun Prairie | 24/7 | Emergencies |
| 3 | All Comfort Services | 64 | 4.8★ (3,441) | Madison, 11 mi away | 24/7 | Most reviews |
| 4 | RG Heating Cooling Plumbing | 64 | 4.9★ (1,820) | Waunakee, 11 mi away | 24/7 | — |
| 5 | Harker Heating & Cooling | 63 | 4.9★ (1,721) | Madison, 13 mi away | 24/7 | — |
| 6 | High Tech Heating & A/C, Inc. | 63 | 4.9★ (362) | Cottage Grove, 7 mi away | 24/7 | — |
| 7 | TradeWinds Heating & Air Conditioning Inc. | 62 | 5.0★ (223) | Madison, 7 mi away | 24/7 | — |
| 8 | Action Plumbing, Heating, Air Conditioning and Electric, Inc. | 62 | 4.9★ (1,042) | Madison, 16 mi away | 24/7 | — |
| 9 | Aire Serv of Madison | 62 | 4.9★ (497) | McFarland, 12 mi away | 24/7 | — |
| 10 | Southport Home Services | 61 | 4.9★ (174) | Madison, 10 mi away | 24/7 | — |
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 review volume: 4.9★ from 4,888 Google reviews, the most in Sun Prairie.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sun Prairie
Ranked #2 because of its Google rating and trade focus: 4.7★ from 1,128 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 11 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 3,441 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waunakee, 11 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 1,820 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 13 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 1,721 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cottage Grove, 7 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 362 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 7 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 223 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 16 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 1,042 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in McFarland, 12 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 497 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 10 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 174 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fitchburg, 17 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 388 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 8 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 91 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sun Prairie
Ranked #13 because of its Google rating and trade focus: 4.7★ from 33 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sun Prairie
Ranked #14 because of its Google rating and trade focus: 4.7★ from 89 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Middleton, 17 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 200 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Verona, 22 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 261 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Waunakee, 13 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 45 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 11 mi away
Ranked #18 because of its Google rating and trade focus: 4.5★ from 24 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sun Prairie
Ranked #19 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “HVAC contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Stoughton, 18 mi away
Ranked #20 because of its Google rating and trade focus: 4.6★ from 62 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 14 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 43 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 8 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 37 Google reviews, listed on Google as “HVAC contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Madison, 20 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 21 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mishawaka, 20 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Madison, 10 mi away
Ranked #25 because of its Google rating and trade focus: 3.2★ from 13 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 #26, in CR Score order; each links to its profile. We publish the top 26 of 83 ranked HVAC contractors here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Robert's Plumbing & Heating INC | 54 | 4.5★ (32) | 8 mi |
1 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 |
|---|---|---|
| Behm Heating & Cooling, LLC | 5.0★ (7) | 25 mi |
National price ranges in USD, not adjusted for Sun Prairie. 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 83 Sun Prairie 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 22, 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 Sun Prairie 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 |