Devix Heating and Cooling
“Customer service is next level, they take a lot of pride in their work.”
Best HVAC Contractors in West Allis, WI
15 companies listed · 6 in West Allis · 9 open 24/7 · 11 open weekends · all 15 rated 4.5+
Data verified October 21, 2026
West Allis Heating
“The service tech, Rocco, took the time to explain everything and was very thorough.”
Done Right Air
“I've used Done Right Air a couple of times to replace old HVAC systems and they've done great work at a reasonable price.”
Fennig Plumbing & Heating Inc
“He is honest and has taught me a few things plumbing and hvac mechanics as a bonus.”
Landolt Service Inc
“Dave was very helpful and gave great advice down to the details for a complex job.”
Masters Building Solutions
The 15 companies listed for West Allis, WI work on furnaces, heat pumps and air conditioners. Each profile repeats what the company publishes about its hours, its license and the equipment it fits, alongside ratings and quotes drawn from public reviews.
Area overview: West Allis, WI
Of the 15 companies we list here, 6 are in West Allis itself and 9 come from towns including Milwaukee (3, 5 mi), New Berlin (3, 5 mi) and Brookfield (2, 6 mi). The companies on this page are rated from 4.6 to 5.0 across 3,096 reviews; 12 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise professionalism (92%), punctuality (83%) and quality (83%). 9 are open around the clock; 11 are open on Saturdays and 9 on Sundays. The services the companies on this page list most often on their websites are cooling (3), heating (3), ductless (2) and indoor air quality (2). 2 show a license on their websites; 1 lists staff certifications (NATE) and 7 have a BBB rating of A or A+. Domain records put 13 websites of the companies on this page at ten or more years old; the oldest dates from 1997. 10 offer emergency call-outs; 9 offer financing or payment plans; 6 give free estimates; 3 are family- or locally-owned and 8 list coupons or special offers. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Why do some of these firms show another city?
6 of the 15 companies are based in West Allis; the others come from other towns within 10 mi. This trade drives to you, so a shop over the county line is normal. Ask whether your address carries a travel charge.
Gregg Heating & Air Conditioning
“Felt extremely comfortable having this company in my home and will 100% be recommending to anyone that needs help with heating and cooling work.”
Gross Heating & Air Conditioning
“They did a great job of making sure the entire job looked like something they would be proud to have in their own homes.”
Absolute Comfort Hvac LLC
“Absolute Comfort is now my "go to" for maintenance, service and soon new equipment.”
Air Solutions Heating & Cooling
“It's a tricky problem, with no straightforward fix and he took the extra time and care to explain all the considerations and brainstorm ideas with me.”
The Thielmann Group
“I added air conditioning to my home and I felt that Thielman Group treated me honestly and with respect.”
RJ Heating and Air Conditioning LLC
“Julius took my wife through and showed her the new thermostats and how they work, the zoning and how it works, and they cleaned up and made it look like they were never there.”
Uttke Heating & Cooling
“I was provided with quality service and helpful tips/tricks to ensure prolonged life and performance of my heating system.”
Quality Heating & Sheet Metal Company
“Very Thorough, On Time, Did not rush, Had the latest and greatest testing and measurement equipment.”
Heinrichs Home Comfort
“He's always on time, does excellent work, and communicates what he's done and recommends.”
Why these companies made our list
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