Best HVAC companies in Grafton, WI

The highest-scoring HVAC company in and near Grafton is Austin Plumbing, Heating, Air & Electric (score 87, 4.9 stars from 1,237 Google reviews). 16 companies meet the 5 Star standard within about 16 miles.

Last updated Nov 1, 2026How we rank
  1. 1

    Austin Plumbing, Heating, Air & Electric

    4.9 · 1,237 Google reviewsGermantown, WI87 years in business

    Austin Plumbing, Heating, Air & Electric provides plumbing, heating, air conditioning, electrical, well pump, and water conditioning services in Southeastern Wisconsin. Serving the area since 1939, the family-owned an…

    Financing availableEmergency service
    87SCORE
  2. 2

    Burkhardt Heating, Cooling, Plumbing & Electric

    4.8 · 2,304 Google reviewsMilwaukee, WI
    78SCORE
  3. 3

    Professional Services Heating, AC & Electric Repair

    4.9 · 736 Google reviewsThiensville, WI
    78SCORE
  4. 4

    Thielmann Heating, Cooling & Plumbing

    4.9 · 653 Google reviewsMequon, WI
    78SCORE
  5. 5

    Prestige Heating & Cooling

    5.0 · 129 Google reviewsMenomonee Falls, WI
    73SCORE
  6. 6

    Custom Home Heating and Air Inc.

    5.0 · 110 Google reviewsMenomonee Falls, WI
    73SCORE
  7. 7

    Pro Tech Mechanical

    4.9 · 218 Google reviewsMilwaukee, WI
    72SCORE
  8. 8

    Hometown Heating, Air & Electric

    4.9 · 689 Google reviewsThiensville, WI
    71SCORE
  9. 9

    Baseline Heating & Air Conditioning

    5.0 · 90 Google reviewsMenomonee Falls, WI
    71SCORE
  10. 10

    J J's Plumbing Heating & Cooling

    4.9 · 82 Google reviewsCedarburg, WI
    70SCORE
  11. 11

    Aire Serv of North Shore

    5.0 · 145 Google reviewsMequon, WI
    69SCORE
  12. 12

    Ramos Heating and Cooling

    5.0 · 71 Google reviews
    69SCORE
  13. 13

    Seider Heating, Plumbing & Electrical

    4.8 · 253 Google reviewsMenomonee Falls, WI
    66SCORE
  14. 14

    Nash Mechanical LLC

    5.0 · 39 Google reviewsMilwaukee, WI
    66SCORE
  15. 15

    Cliff Bergin & Associates

    4.7 · 425 Google reviewsMequon, WI
    64SCORE
  16. 16

    GCS Heating and Cooling LTD

    5.0 · 23 Google reviews
    60SCORE

We list only companies that clear our published bar, so this area is still filling in. As more HVAC companies near Grafton qualify, they'll appear here automatically.

Compare the top 10

Top HVAC companies in Grafton by 5 Star Score
#CompanyScoreGoogle ratingReviewsYearsBased in
1Austin Plumbing, Heating, Air & Electric874.91,23787Germantown
2Burkhardt Heating, Cooling, Plumbing & Electric784.82,304–Milwaukee
3Professional Services Heating, AC & Electric Repair784.9736–Thiensville
4Thielmann Heating, Cooling & Plumbing784.9653–Mequon
5Prestige Heating & Cooling735.0129–Menomonee Falls
6Custom Home Heating and Air Inc.735.0110–Menomonee Falls
7Pro Tech Mechanical724.9218–Milwaukee
8Hometown Heating, Air & Electric714.9689–Thiensville
9Baseline Heating & Air Conditioning715.090–Menomonee Falls
10J J's Plumbing Heating & Cooling704.982–Cedarburg

HVAC companies in Grafton: quick answers

Who is the highest-rated HVAC company in Grafton, WI?

Austin Plumbing, Heating, Air & Electric has the highest 5 Star Score among HVAC companies in and near Grafton: 87 out of 100, with a 4.9 star Google rating from 1,237 reviews.

How many 5 Star HVAC companies serve Grafton?

16 HVAC companies meet our standard within about 16 miles of Grafton: at least a 4.5 star rating, 20 or more reviews and a score of 60 or higher. The top 16 have 7,204 Google reviews between them, averaging 4.92 stars.

How are these HVAC companies ranked?

By 5 Star Score: rating quality adjusted for review count (45 points), review volume (25), review recency (15), years in business (10) and license verification (5). Businesses cannot pay to change their score.

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Ratings and review counts come from each company's public Google listing and are re-checked monthly. 5 Star Home Service Pros is independent; companies cannot pay for placement.