Best HVAC companies in Mequon, WI

The highest-scoring HVAC company in and near Mequon is Quality Heating, Cooling, Plumbing & Electric (score 88, 4.9 stars from 1,547 Google reviews). 49 companies meet the 5 Star standard within about 16 miles; the top 30 are ranked below.

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

    Quality Heating, Cooling, Plumbing & Electric

    4.9 · 1,547 Google reviewsBrookfield, WI65 years in business

    Quality Heating, Cooling, Plumbing & Electric provides heating, cooling, plumbing, and electrical services across Metro Milwaukee and Southeastern Wisconsin. The locally owned and operated company has served the regio…

    Emergency service
    88SCORE
  2. 2

    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
  3. 3

    Roman Home Services

    4.9 · 5,689 Google reviewsWest Allis, WI
    83SCORE
  4. 4

    Third Coast HVAC, AC & Furnace Repair

    5.0 · 543 Google reviewsBrookfield, WI

    Third Coast HVAC, AC & Furnace Repair provides heating, cooling, and indoor air quality services across Waukesha County and the Milwaukee metro area. The locally owned and operated company handles AC installation, mai…

    Financing availableEmergency service
    82SCORE
  5. 5

    Interstate Heating Co., Inc.

    4.9 · 1,093 Google reviewsSussex, WI
    80SCORE
  6. 6

    Cardinal Heating, Cooling, Plumbing & Electric

    5.0 · 357 Google reviewsSussex, WI
    80SCORE
  7. 7

    Absolute Comfort HVAC LLC

    5.0 · 353 Google reviewsWaukesha, WI
    80SCORE
  8. 8

    Pro Serv Plumbing, Heating, and Cooling

    5.0 · 312 Google reviewsWauwatosa, WI
    79SCORE
  9. 9

    West Allis Heating, Cooling, Plumbing, and Electrical

    4.8 · 2,768 Google reviewsMilwaukee, WI
    78SCORE
  10. 10

    Burkhardt Heating, Cooling, Plumbing & Electric

    4.8 · 2,304 Google reviewsMilwaukee, WI
    78SCORE
  11. 11

    Professional Services Heating, AC & Electric Repair

    4.9 · 736 Google reviewsThiensville, WI
    78SCORE
  12. 12

    Thielmann Heating, Cooling & Plumbing

    4.9 · 653 Google reviewsMequon, WI
    78SCORE
  13. 13

    E & R Heating and Cooling

    5.0 · 242 Google reviewsWest Allis, WI
    78SCORE
  14. 14

    Mr. Holland's Home Services

    4.8 · 2,112 Google reviewsNew Berlin, WI
    77SCORE
  15. 15

    New Berlin Heating & Air Conditioning

    4.8 · 1,321 Google reviewsNew Berlin, WI
    76SCORE
  16. 16

    Capital Heating, Cooling, Electric, and Plumbing

    4.7 · 3,579 Google reviewsMenomonee Falls, WI
    74SCORE
  17. 17

    ABC Plumbing, Sewer, Heating, Cooling & Electric

    4.8 · 570 Google reviewsWest Allis, WI
    73SCORE
  18. 18

    Prestige Heating & Cooling

    5.0 · 129 Google reviewsMenomonee Falls, WI
    73SCORE
  19. 19

    Custom Home Heating and Air Inc.

    5.0 · 110 Google reviewsMenomonee Falls, WI
    73SCORE
  20. 20

    Over the Moon Heating, Air & Electric

    4.7 · 1,420 Google reviewsWaukesha, WI
    Emergency serviceFinancing availableBackground-checked
    72SCORE
  21. 21

    Pro Tech Mechanical

    4.9 · 218 Google reviewsMilwaukee, WI
    72SCORE
  22. 22

    Hometown Heating, Air & Electric

    4.9 · 689 Google reviewsThiensville, WI
    71SCORE
  23. 23

    Baseline Heating & Air Conditioning

    5.0 · 90 Google reviewsMenomonee Falls, WI
    71SCORE
  24. 24

    Seider Heating, Plumbing & Electrical

    4.8 · 387 Google reviewsWaukesha, WI
    70SCORE
  25. 25

    Devix Heating and Cooling

    4.9 · 207 Google reviewsWest Allis, WI
    70SCORE
  26. 26

    J J's Plumbing Heating & Cooling

    4.9 · 82 Google reviewsCedarburg, WI
    70SCORE
  27. 27

    Donovan & Jorgenson

    4.8 · 378 Google reviewsNew Berlin, WI
    69SCORE
  28. 28

    Lowe's Air Duct Cleaning

    4.9 · 268 Google reviewsMilwaukee, WI
    69SCORE
  29. 29

    Heating and Cooling Drs of Brookfield and Wauwatosa LLC

    5.0 · 232 Google reviewsWauwatosa, WI
    69SCORE
  30. 30

    Majestic Custom Heating and Air Conditioning

    4.9 · 206 Google reviewsWaukesha, WI
    69SCORE

Compare the top 10

Top HVAC companies in Mequon by 5 Star Score
#CompanyScoreGoogle ratingReviewsYearsBased in
1Quality Heating, Cooling, Plumbing & Electric884.91,54765Brookfield
2Austin Plumbing, Heating, Air & Electric874.91,23787Germantown
3Roman Home Services834.95,689–West Allis
4Third Coast HVAC, AC & Furnace Repair825.0543–Brookfield
5Interstate Heating Co., Inc.804.91,093–Sussex
6Cardinal Heating, Cooling, Plumbing & Electric805.0357–Sussex
7Absolute Comfort HVAC LLC805.0353–Waukesha
8Pro Serv Plumbing, Heating, and Cooling795.0312–Wauwatosa
9West Allis Heating, Cooling, Plumbing, and Electrical784.82,768–Milwaukee
10Burkhardt Heating, Cooling, Plumbing & Electric784.82,304–Milwaukee

HVAC companies in Mequon: quick answers

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

Quality Heating, Cooling, Plumbing & Electric has the highest 5 Star Score among HVAC companies in and near Mequon: 88 out of 100, with a 4.9 star Google rating from 1,547 reviews.

How many 5 Star HVAC companies serve Mequon?

49 HVAC companies meet our standard within about 16 miles of Mequon: at least a 4.5 star rating, 20 or more reviews and a score of 60 or higher. The top 30 have 29,832 Google reviews between them, averaging 4.89 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.