65/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 7,086 Google reviews, the most in Grafton.
- 4.8★ from 7,086 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- W204N16635 Jackson Dr, Jackson, WI 53037
Best HVAC Contractors in Grafton, WI (2026)
205 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Grafton: Mr. Holland's Home Services, CR Score 65/100; 4.8★ from 7,086 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Professional Services Heating, AC & Electric Repair, posts 24/7 hours; ranked #2 of 205.
- 26
Most-reviewed: Roman Home Services - Electric, Plumbing, Heating & Cooling, 5,231 Google reviews at 4.9★, the most of 205 ranked after Mr. Holland's Home Services; ranked #26.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
205 Grafton HVAC contractors are ranked here by CR Score, from ten published factors. 83 are open 24/7, 126 open Saturdays and 102 open Sundays, based on posted hours. The median Google rating is 4.9★ across 205 rated businesses.
Top 10 HVAC contractors in Grafton at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mr. Holland's Home Services | 65 | 4.8★ (7,086) | Jackson, 11 mi away | 24/7 | Overall |
| 2 | Professional Services Heating, AC & Electric Repair | 65 | 4.9★ (1,382) | Port Washington, 5 mi away | 24/7 | Emergencies |
| 3 | K Komfort Heating & Cooling | 64 | 4.9★ (445) | Grafton | 24/7 | — |
| 4 | Professional Services Heating, AC & Electric Repair | 64 | 5.0★ (682) | Germantown, 6 mi away | 24/7 | — |
| 5 | Burkhardt Heating, Cooling, Plumbing & Electric | 63 | 4.8★ (2,027) | Milwaukee, 11 mi away | 24/7 | — |
| 6 | Thielmann Heating, Cooling & Plumbing | 63 | 4.9★ (487) | Mequon, 7 mi away | 24/7 | — |
| 7 | Capital Heating, Cooling, Electric, and Plumbing | 62 | 4.7★ (2,977) | Menomonee Falls, 16 mi away | 24/7 | — |
| 8 | Cliff Bergin & Associates | 61 | 4.7★ (405) | Mequon, 8 mi away | 24/7 | — |
| 9 | Aire Serv of North Shore | 61 | 5.0★ (81) | Brown Deer, 5 mi away | 24/7 | — |
| 10 | Albiero Plumbing & HVAC | 61 | 4.8★ (721) | West Bend, 15 mi away | 24/7 | — |
The 205 best HVAC contractors in Grafton, 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 Port Washington, 5 mi away
65/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 1,382 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,382 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1100 Bywater Dr #100, Port Washington, WI 53074
Based in Grafton
64/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 445 Google reviews, listed on Google as “Furnace repair service”.
- 4.9★ from 445 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1201 6th Ave, Grafton, WI 53024
Based in Germantown, 6 mi away
64/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 682 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 682 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 113 Riverview Dr, Thiensville, WI 53092
Based in Milwaukee, 11 mi away
63/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 2,027 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 2,027 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8232 N Teutonia Ave, Milwaukee, WI 53209
Based in Mequon, 7 mi away
63/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 487 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 487 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11512 N Port Washington Rd Suite 201K, Mequon, WI 53092
Based in Menomonee Falls, 16 mi away
62/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.7★ from 2,977 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 2,977 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- W134 N5368 Campbell Dr, Menomonee Falls, WI 53051
Based in Mequon, 8 mi away
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.7★ from 405 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 405 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6300 W Donges Bay Rd, Mequon, WI 53092
Based in Brown Deer, 5 mi away
61/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 81 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 81 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in West Bend, 15 mi away
61/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 721 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 721 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1940 N Main St, West Bend, WI 53090
Based in Port Washington, 5 mi away
61/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 122 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 122 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 740 Maritime Dr, Port Washington, WI 53074
Based in Brookfield, 20 mi away
61/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 1,113 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,113 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2840 N Brookfield Rd Ste 2, Brookfield, WI 53045
Based in Sussex, 20 mi away
60/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 932 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 932 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- N53 W24950 S Corporate Cir, Sussex, WI 53089
Based in New Berlin, 23 mi away
60/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 1,158 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,158 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1910 S Sunny Slope Rd, New Berlin, WI 53151
Based in Slinger, 17 mi away
60/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 409 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 409 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 105 W Commerce Blvd, Slinger, WI 53086
Based in Slinger, 17 mi away
60/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 272 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 272 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 122 W Commerce Blvd Unit C, Slinger, WI 53086
Based in Grafton
60/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 51 Google reviews
- Hours
- Mon–Thu 6 AM–10 PM · Fri–Sat 6 AM–11 PM · Sun 6 AM–10 PM
Based in Sussex, 18 mi away
60/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 279 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 279 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- N63W22633 Main St Ste. 107, Sussex, WI 53089
Based in Brookfield, 18 mi away
60/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 383 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 383 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3260 N 126th St, Brookfield, WI 53005
Based in Brookfield, 21 mi away
59/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 436 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 436 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 120 Bishops Way, Brookfield, WI 53005
Based in New Berlin, 24 mi away
59/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.8★ from 1,334 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,334 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2400 S Commerce Dr, New Berlin, WI 53151
Based in Menomonee Falls, 12 mi away
59/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 88 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 88 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- N84W13562 Leon Rd, Menomonee Falls, WI 53051
Based in Cedarburg, 2 mi away
59/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 652 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 652 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- N52W5338 Portland Rd, Cedarburg, WI 53012
Based in Brookfield, 19 mi away
59/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 222 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 222 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2511 N 124th St Suite 204, Brookfield, WI 53005
Based in Milwaukee, 14 mi away
59/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.8★ from 189 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 189 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7820 W Florist Ave, Milwaukee, WI 53218
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 205 ranked HVAC contractors here; the rest are on their profiles.
Also serving Grafton
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 |
|---|---|---|
| Air Maintenance Inc | 4.0★ (2) | 19 mi |
| Best Heating And Air Conditioning | 2.5★ (2) | 18 mi |
| Envira-Tech Inc | 4.0★ (2) | 22 mi |
| HVAC Bay Furnace & AC Repair | 5.0★ (2) | 14 mi |
| HVAC Hiring Bonus | 5.0★ (1) | 11 mi |
| IMI LLC | 5.0★ (2) | 22 mi |
| Joe DeBelak Plumbing & Heating Co Inc | 4.0★ (64) | 11 mi |
| John Thielmann & Sons | 5.0★ (2) | 13 mi |
| K Komfort Heating & Cooling | 4.5★ (68) | 16 mi |
| Mack's Heating & Air Conditioning | 5.0★ (2) | 18 mi |
| Mequons Heating & Air Conditioning Installation | 5.0★ (2) | 16 mi |
| Mobile Air of Milwaukee | 1.0★ (1) | 11 mi |
| Pure Mecahnical | 5.0★ (2) | 23 mi |
| R J Refrigeration Inc | 5.0★ (2) | 18 mi |
| Sunspace by Sun Comfort, Inc., Jackson | 5.0★ (1) | 12 mi |
| Tempco Inc Heating & Air Conditioning | 4.5★ (2) | 13 mi |
| Thompson Heating & Cooling, LLC | 4.9★ (44) | 21 mi |
| Trane Milwaukee Sales Office | 2.5★ (2) | 20 mi |
| W H Jacklin Inc | 3.0★ (2) | 11 mi |
| Whesco Group Inc | 5.0★ (1) | 10 mi |
How much do HVAC contractors cost in Grafton?
National price ranges in USD, not adjusted for Grafton. 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 Grafton HVAC contractors
We scored 205 Grafton 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 Grafton 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 Grafton: frequently asked questions
Who is the best HVAC contractor in Grafton?
By CR Score, the highest-ranked HVAC contractor in Grafton, WI is Mr. Holland's Home Services with a CR Score of 65/100. It has 4.8★ from 7,086 Google reviews. It is open 24/7. Professional Services Heating, AC & Electric Repair (#2) and K Komfort Heating & Cooling (#3) follow. We ranked 205 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Grafton?
ContractorsRanked ranks 205 HVAC contractors serving Grafton, WI. 2 of them are based in Grafton; 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 Grafton are open 24/7?
83 ranked HVAC contractors in Grafton post 24/7 hours. The highest-ranked are Mr. Holland's Home Services (#1), Professional Services Heating, AC & Electric Repair (#2) and K Komfort Heating & Cooling (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Grafton work on weekends?
126 of 205 ranked HVAC contractors post Saturday hours and 102 post Sunday hours. The highest-ranked open Saturdays are Mr. Holland's Home Services (#1), Professional Services Heating, AC & Electric Repair (#2) and K Komfort Heating & Cooling (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does ac replacement cost in Grafton?
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 Grafton. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Grafton HVAC contractors have?
The median Google rating among 205 rated HVAC contractors in Grafton is 4.9★, with a median of 32 reviews. Mr. Holland's Home Services has the most, 7,086 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 Grafton?
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 Grafton
- October 2026: CR Scores recalculated for 205 hvac contractors serving Grafton.
- October 2026: 2 duplicate listings merged.
More HVAC contractors and Grafton pages
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Other trades in Grafton
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- Plumbers in Grafton177 ranked
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- Landscapers in Grafton102 ranked
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- Drywall contractors in Grafton7 ranked
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- Deck builders in Grafton52 ranked
- Siding contractors in Grafton211 ranked
- Window installers in Grafton193 ranked
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- Solar installers in Grafton15 ranked
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- All contractors in Grafton