No heat or no cooling right now?
If you smell gas or a carbon monoxide alarm sounds, leave first and call 911 or your gas utility from outside. Otherwise, call a company below that says it takes emergency calls. Quick checks first: AC not cooling · furnace not working.
The list
Milwaukee HVAC companies, A to Z
Filter by what each business says on its own website. “Says 24/7 emergency” means its site says so – call to confirm before you rely on it.
Your HVAC company, Milwaukee
The one City Spotlight place for Milwaukee sits here, above the A to Z list. Requests sent from this page for areas the Spotlight company serves go to it. Offered only to companies that pass our listing rules. How it works
Absolute Comfort HVAC LLC
Based in Waukesha, WI · W220N1560 Jericho Ct, Waukesha, WI 53186
Names on its website: Waterford, Brookfield, Burlington, Rochester, Mukwonago, Franklin, New Berlin, Pewaukee, Sussex, Menomonee Falls and more
Action Heating & Cooling
Based in Milwaukee, WI · 4230 W Douglas Ave, Milwaukee, WI 53209
Names on its website: Glendale, Brookfield, Butler, Cudahy, Elm Grove, Franklin, Greendale, Hales Corners, Menomonee Falls, Mequon and more
Affordable Heating & Air Conditioning
Based in Cudahy, WI · 4630 S Kinnickinnic Ave, Cudahy, WI 53110
Names on its website: Franklin, Greenfield, Milwaukee, Oak Creek, South Milwaukee, St. Francis, West Allis
Baseline Heating & Air Conditioning LLC
Based in Menomonee Falls, WI · N87W14873 Fond Du Lac Ave, Menomonee Falls, WI 53051
Names on its website: Waukesha County, Washington County, Milwaukee County
Brookfield Heating & Cooling LLC
Based in Brookfield, WI · 200 S Executive Dr. Suite 101, Brookfield, WI 53005
Names on its website: Elm Grove, Milwaukee, Butler, New Berlin, Menomonee Falls, Waukesha, Pewaukee, Hales Corners, Sussex, Greendale and more
Burant Heating & Air Conditioning LLC
Based in Franklin, WI · 9525 S 60th St, Franklin, WI 53132
Names on its website: Bay View, Brookfield, Cudahy, Elm Grove, Greendale, Greenfield, Hales Corners, Muskego, New Berlin, Oak Creek and more
License number shown on its website: 672526
Burkhardt Heating, Cooling, Plumbing & Electric
Based in Milwaukee, WI · 8232 N Teutonia Ave, Milwaukee, WI 53209
Names on its website: Brookfield, Waukesha, Menomonee Falls, Oconomowoc, West Bend
License number shown on its website: Wisconsin-licensed technicians
Capital Heating, Cooling, Electric, and Plumbing
Based in Menomonee Falls, WI · W134 N5368 Campbell Dr., Menomonee Falls, WI 53051
Names on its website: Bayside, Whitefish Bay, Greater Milwaukee
Custom Home Heating and Air Conditioning
Based in Menomonee Falls, WI · N84W13562 Leon Road, Menomonee Falls, WI 53051
Names on its website: Brookfield, Brown Deer, Cedarburg, Elm Grove, Fox Point, Germantown, Glendale, Mequon, Milwaukee, Pewaukee and more
Devix Heating & Cooling
Based in West Allis, WI
Names on its website: Brown Deer, Cudahy, Greenfield, Hales Corners, Milwaukee, Oak Creek, Fox Point, Franklin, River Hills, Shorewood and more
E & R Heating and Cooling
Based in West Allis, WI · 8000 W National Ave, West Allis, WI 53214
Names on its website: Milwaukee, Wauwatosa, Brookfield, Greenfield, Oak Creek, Franklin, New Berlin, Hales Corners, Cudahy, St. Francis and more
License number shown on its website: Licensed & Insured
Hales Corners Heating & Air Conditioning
Based in Hales Corners, WI · 10700 W Parnell Ave, Hales Corners, WI 53130
Names on its website: Bayside, Brown Deer, Cudahy, Franklin, Glendale, Greendale, Greenfield, Milwaukee, Oak Creek, Wauwatosa and more
HoneyCreek Heating & Cooling, LLC
Based in Sussex, WI
Names on its website: Menomonee Falls, Pewaukee, Brookfield, Waukesha, Germantown, Butler
Iron Fireman Heating, Ventilating & Air Conditioning
Based in Waukesha, WI · 402 Travis Lane, Suite 67, Waukesha, WI 53189
Names on its website: Milwaukee, Brookfield, West Allis, Germantown, Menomonee Falls, Delafield, Dousman, Hartland, Hartford, Oconomowoc and more
Mr. Holland's Home Services
Based in New Berlin, WI · 2400 S Commerce Dr, New Berlin, WI 53151
Names on its website: Milwaukee, Southeastern Wisconsin
License number shown on its website: License #16021
On Time Heating & Cooling, LLC
Based in Waukesha, WI · 323 W Sunset Dr, Waukesha, WI 53189
Names on its website: Pewaukee, Brookfield, Delafield, New Berlin, Oconomowoc, Menomonee Falls, Hartland, Sussex, Muskego, Elm Grove and more
License number shown on its website: WI License #1482483 – On Time Heating & Cooling, LLC
Over the Moon Heating, Air & Electric
Based in Waukesha, WI · 20711 Watertown Rd, Suite D, Waukesha, WI 53186
Names on its website: Wauwatosa, Pewaukee, New Berlin, Oconomowoc, Sussex, Germantown, Menomonee Falls, Elm Grove
License number shown on its website: Wisconsin State Contractors: Electrical License #1130645 | HVAC License #1453339
Quality Heating, Cooling, Plumbing & Electric
Based in Brookfield, WI · 2840 North Brookfield Rd, Brookfield, WI 53045
Names on its website: Greater Milwaukee, Southeastern Wisconsin
Thielmann Heating, Cooling & Plumbing
Based in New Berlin, WI · 17020 W. National Ave, New Berlin, WI 53151
Names on its website: Oak Creek, Hartford, Burlington, Waterford, Slinger, Mequon
License number shown on its website: Fully Licensed & Insured
Third Coast Heating & Cooling
Based in Brookfield, WI · 120 Bishops Way, Brookfield, WI
Names on its website: Waukesha, Germantown
West Allis Heating, Cooling, Plumbing, & Electrical
Based in Milwaukee, WI · 201 S Hawley Ct, Milwaukee, WI 53214
Names on its website: Brookfield, Franklin, Elm Grove, Greendale, Greenfield, Mequon, New Berlin, Oak Creek, Shorewood, Waukesha and more
License number shown on its website: Doing Business As Hockers – License number PM#1281350
Details on this page come from each business’s own website, checked October 2026. Free listings are shown alphabetically. How we list · Update or remove a listing
Before you hire
Checking an HVAC company in the Milwaukee area
HVAC licenses in Wisconsin
HVAC contractors are licensed by the state.
Who licenses: Wisconsin Department of Safety and Professional Services (DSPS)
License types: HVAC Contractor.
Companies: DSPS issues an 'HVAC Contractor' credential, an organization (business) credential regulated under Wisconsin Administrative Code chapter SPS 305; We could not read the rule text or statute to confirm exactly who is required to hold it.
Local rules: We did not verify city or county rules, and could not confirm the statutory basis or any related qualifier or tradesperson credentials, so confidence is medium.
Check a license: license.wi.gov
Search the company on the state LicensE portal (license.wi.gov) to confirm it holds a current HVAC Contractor credential.
Federal rule: in every state, technicians who handle refrigerant must hold EPA Section 608 certification, whatever the state or city requires.
We could not confirm every detail from Wisconsin’s own sources, so treat this as a starting point and check with the agency.
Sources: dsps.wi.gov. Checked October 2026 from official sources. This is not legal advice.
Questions to ask
Ask every company the same questions: license number, insurance, EPA refrigerant certification, a written itemized estimate, a load calculation for new equipment, after-hours rates, who pulls the permit, and the warranty. All eight questions.
Seasonal care
Getting through a Milwaukee winter
Heating season is the long one in Milwaukee, so the furnace, boiler or heat pump does most of the work. Start with these before the first cold snap – and keep carbon monoxide alarms working.
Questions
Milwaukee HVAC questions
How many HVAC companies are listed in Milwaukee?
21 HVAC companies, each based within about 25 miles of Milwaukee. They are listed alphabetically.
Which Milwaukee HVAC companies say they offer 24/7 emergency service?
19 of the businesses listed here say on their own website that they offer 24/7 or 24-hour emergency service: Absolute Comfort HVAC LLC, Action Heating & Cooling, Baseline Heating & Air Conditioning LLC, Brookfield Heating & Cooling LLC, Burant Heating & Air Conditioning LLC, Capital Heating, Cooling, Electric, and Plumbing, Custom Home Heating and Air Conditioning, Devix Heating & Cooling, E & R Heating and Cooling, Hales Corners Heating & Air Conditioning, HoneyCreek Heating & Cooling, LLC, Iron Fireman Heating, Ventilating & Air Conditioning and others. Call to confirm availability and after-hours rates.
Do HVAC contractors in Milwaukee need a license?
Wisconsin licenses HVAC contractors statewide through the Wisconsin Department of Safety and Professional Services (DSPS). Check a license at license.wi.gov.
Which Milwaukee companies work on heat pumps?
17 of the listed businesses say on their own website that they install or repair heat pumps. Use the Heat pumps filter above the list.
Which HVAC companies here do commercial work?
15 of the listed businesses say on their own website that they work on commercial properties. Use the Commercial filter above the list.
Do technicians need EPA certification?
Yes: federal rules require technicians who handle refrigerant to hold EPA Section 608 certification, in every state. Ask any company you are considering.
Nearby metro areas: Chicago, IL · Detroit, MI · Minneapolis, MN · Des Moines, IA · Grand Rapids, MI · Madison, WI · Cedar Rapids, IA. All of Wisconsin.
Request an HVAC company
Ask us to find an HVAC company in Milwaukee
Tell us the job and your ZIP code. We pass your request to listed companies that serve your area, and they contact you directly.
No heat in freezing weather, or no cooling in dangerous heat? Call a company from the list that says it takes emergency calls – a form is not fast enough. If you smell gas or a carbon monoxide alarm sounds, leave first and call 911 or your gas utility from outside.