64/100CR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 2,863 Google reviews, the most in Delavan.
- 4.9★ from 2,863 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 310 Sunnyside Dr, Milton, WI 53563
Best HVAC Contractors in Delavan, WI (2026)
108 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Delavan: 24HR Home Comfort Services, CR Score 64/100; 4.9★ from 2,863 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Edelman Heating, Cooling, Plumbing, Electric & Solar, posts 24/7 hours; ranked #2 of 108.
- 6
Most-reviewed: Midwest Heating & Cooling, 2,376 Google reviews at 4.8★, the most of 108 ranked after 24HR Home Comfort Services; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
108 Delavan HVAC contractors are ranked here by CR Score, from ten published factors. 41 are open 24/7, 61 open Saturdays and 51 open Sundays, based on posted hours. The median Google rating is 4.8★ across 108 rated businesses.
Top 10 HVAC contractors in Delavan at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | 24HR Home Comfort Services | 64 | 4.9★ (2,863) | Milton, 18 mi away | 24/7 | Overall |
| 2 | Edelman Heating, Cooling, Plumbing, Electric & Solar | 63 | 4.8★ (396) | Elkhorn, 5 mi away | 24/7 | Emergencies |
| 3 | Master Services Inc. | 63 | 4.7★ (976) | Lake Geneva, 8 mi away | 24/7 | — |
| 4 | Air Systems, Inc. | 63 | 4.8★ (277) | Elkhorn, 3 mi away | 24/7 | — |
| 5 | H. J. Faust, Inc. Heating and Air Conditioning | 62 | 4.9★ (1,340) | Burlington, 20 mi away | 24/7 | — |
| 6 | Midwest Heating & Cooling | 62 | 4.8★ (2,376) | Mukwonago, 23 mi away | 24/7 | Most reviews |
| 7 | American Heating And Air Plus LLC | 61 | 4.9★ (174) | Lake Geneva, 10 mi away | 24/7 | — |
| 8 | Thielmann Heating, Cooling & Plumbing | 61 | 5.0★ (458) | Burlington, 19 mi away | 24/7 | — |
| 9 | Appliance Repair Experts | 61 | 4.8★ (1,444) | Janesville, 16 mi away | Sat · Sun · Evenings | — |
| 10 | Woodstock Heating, Cooling & Electrical | 61 | 4.9★ (1,222) | Woodstock, 24 mi away | 24/7 | — |
The 108 best HVAC contractors in Delavan, ranked
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.
Based in Elkhorn, 5 mi away
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.8★ from 396 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 396 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5384 WI-11, Elkhorn, WI 53121
Based in Lake Geneva, 8 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.7★ from 976 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 976 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- N3481 Co Trunk H, Lake Geneva, WI 53147
Based in Elkhorn, 3 mi away
63/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 277 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 277 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4520 Co Hwy F, Elkhorn, WI 53121
Based in Burlington, 20 mi away
62/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 1,340 Google reviews, listed on Google as “Heating contractor”.
- 4.9★ from 1,340 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1008 S Pine St Suite A, Burlington, WI 53105
Based in Mukwonago, 23 mi away
62/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 2,376 Google reviews, listed on Google as “Air conditioning repair service”.
- 4.8★ from 2,376 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 421 McKenzie Dr, Mukwonago, WI 53149
Based in Lake Geneva, 10 mi away
61/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 174 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 174 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- N 3294 Co Trunk H, Lake Geneva, WI 53147
Based in Burlington, 19 mi away
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 458 Google reviews, listed on Google as “Heating contractor”.
- 5.0★ from 458 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 201 S Pine St, Burlington, WI 53105
Based in Janesville, 16 mi away
61/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.8★ from 1,444 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,444 Google reviews
- Hours
- Mon–Thu 7:30 AM–9 PM · Fri 7:30 AM–7:30 PM · Sat 9 AM–6 PM · Sun 9 AM–5 PM
Based in Woodstock, 24 mi away
61/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 1,222 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,222 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 333 E Judd St, Woodstock, IL 60098
Based in Janesville, 18 mi away
61/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 443 Google reviews, listed on Google as “Furnace repair service”.
- 4.9★ from 443 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 928 Todd Dr #2, Janesville, WI 53546
Based in Delavan
60/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 145 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 145 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat 9 AM–5 PM · Sun closed
- Address
- 409 Hallberg St Suite B, Delavan, WI 53115
Based in Waterford, 24 mi away
60/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 448 Google reviews, listed on Google as “Heating contractor”.
- 5.0★ from 448 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 107 N Milwaukee St, Waterford, WI 53185
Based in Delavan
59/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.4★ from 16 Google reviews, listed on Google as “HVAC contractor”.
- 4.4★ from 16 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Delavan
59/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Heating contractor”.
- 5.0★ from 8 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1827 Hobbs Dr, Delavan, WI 53115
Based in Whitewater, 9 mi away
59/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 30 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Waterford, 24 mi away
58/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 201 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 201 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 30913 Shady Ln, Waterford, WI 53185
Based in Mukwonago, 24 mi away
57/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 106 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 106 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- S72W30945 Kettle Ridge Dr, Mukwonago, WI 53149
Based in Delavan
57/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 73 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 73 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat–Sun closed
Based in Woodstock, 23 mi away
57/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.7★ from 185 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 185 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4006 E Wonder Lake Rd, Wonder Lake, IL 60097
Based in Mukwonago, 23 mi away
57/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 62 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 62 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 639 Baxter Dr, Mukwonago, WI 53149
Based in Fox Lake, 20 mi away
56/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.7★ from 69 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 69 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5505 Walnut St, Richmond, IL 60071
Based in Fox Lake, 20 mi away
56/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “Heating contractor”.
- 5.0★ from 33 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5705 Broadway Rd, Richmond, IL 60071
Based in Whitewater, 14 mi away
56/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.4★ from 31 Google reviews, listed on Google as “HVAC contractor”.
- 4.4★ from 31 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 532 E Milwaukee St, Whitewater, WI 53190
Based in Fox Lake, 20 mi away
56/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.4★ from 107 Google reviews, listed on Google as “HVAC contractor”.
- 4.4★ from 107 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11215 Commercial St, Richmond, IL 60071
HVAC contractors ranked #26 to #50
#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 108 ranked HVAC contractors here; the rest are on their profiles.
Also serving Delavan
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 |
|---|---|---|
| 24/7 Home Comfort Services | 3.8★ (4) | 19 mi |
| 5 Start Plumbing Heating & Cooling | 3.0★ (2) | 25 mi |
| A Hartlett & Son | 4.5★ (2) | 24 mi |
| A J Electric Heating & Cooling | 11 mi | |
| Air Management Services Inc | 4.0★ (2) | 15 mi |
| Dad And Son LLC | 5.0★ (2) | 23 mi |
| Dale Heating & Air Conditioning | 5.0★ (5) | 12 mi |
| Derek's Plumbing & Hydronic | 5.0★ (1) | 6 mi |
| Eagle Refrigeration Service | 4.5★ (2) | 24 mi |
| EB Mechanical LLC. | 5.0★ (1) | 21 mi |
| Germundson Heating & Cooling | 5.0★ (5) | 14 mi |
| Hartwig Plumbing & Heating | 5.0★ (1) | 15 mi |
| Lenz Plumbing & Heating Inc | 2.3★ (3) | 19 mi |
| McHenry Air Conditioning Service | 5.0★ (1) | 25 mi |
| R A Carlson Plumbing & Heating | In Delavan | |
| RTU Replacement Specialists, LLC | 5.0★ (1) | 25 mi |
| Steve Gauger Plumbing & Heating | 4.2★ (10) | 21 mi |
| The Heating & Air Conditioning Co | 5.0★ (1) | 24 mi |
| Tindall Heating & Cooling LLC | 5.0★ (1) | 23 mi |
| TOTAL Mechanical, LLC Janesville | 5.0★ (1) | 20 mi |
How much do HVAC contractors cost in Delavan?
National price ranges in USD, not adjusted for Delavan. 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 |
When to hire an HVAC contractor in Wisconsin
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.
How we ranked Delavan HVAC contractors
We scored 108 Delavan 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 Delavan 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 |
HVAC contractors in Delavan: frequently asked questions
Who is the best HVAC contractor in Delavan?
By CR Score, the highest-ranked HVAC contractor in Delavan, WI is 24HR Home Comfort Services with a CR Score of 64/100. It has 4.9★ from 2,863 Google reviews. It is open 24/7. Edelman Heating, Cooling, Plumbing, Electric & Solar (#2) and Master Services Inc. (#3) follow. We ranked 108 HVAC contractors on ten factors, last updated October 23, 2026.
How many HVAC contractors are there in Delavan?
ContractorsRanked ranks 108 HVAC contractors serving Delavan, WI. 6 of them are based in Delavan; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which HVAC contractors in Delavan are open 24/7?
41 ranked HVAC contractors in Delavan post 24/7 hours. The highest-ranked are 24HR Home Comfort Services (#1), Edelman Heating, Cooling, Plumbing, Electric & Solar (#2) and Master Services Inc. (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Delavan work on weekends?
61 of 108 ranked HVAC contractors post Saturday hours and 51 post Sunday hours. The highest-ranked open Saturdays are 24HR Home Comfort Services (#1), Edelman Heating, Cooling, Plumbing, Electric & Solar (#2) and Master Services Inc. (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does ac replacement cost in Delavan?
AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Delavan. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Delavan HVAC contractors have?
The median Google rating among 108 rated HVAC contractors in Delavan is 4.8★, with a median of 16 reviews. 24HR Home Comfort Services has the most, 2,863 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.
When is the best time to hire an HVAC contractor in Delavan?
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.
How does ContractorsRanked rank HVAC contractors?
Each HVAC contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Delavan
- October 2026: CR Scores recalculated for 108 hvac contractors serving Delavan.
- October 2026: 2 duplicate listings merged.
More HVAC contractors and Delavan pages
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