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
Detroit 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, Detroit
The one City Spotlight place for Detroit 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
Aladdin Heating & Cooling
Based in Warren, MI · 26969 Ryan Rd, Warren, MI 48091
Names on its website: Roseville, Troy, Rochester, Lake Orion, Novi
Atlas Heating & Cooling LLC
Based in Shelby Township, MI · 54249 White Spruce Ln, Shelby Township, MI 48315
Names on its website: Clinton Township, Sterling Heights, Troy, Utica, Rochester, Rochester Hills, St. Clair Shores, Auburn Hills, Birmingham, Bloomfield Hills
License number shown on its website: 7116384 (Mechanical Contractor License)
C & C Heating & Air Conditioning
Based in Roseville, MI · 29420 Groesbeck Hwy, Roseville, MI 48066
Names on its website: Detroit, Midtown, Corktown, Palmer Woods, University District
License number shown on its website: #7119651
Comfort Zone Heating and Cooling LLC
Based in Royal Oak, MI · 4238 Edgeland Ave, Royal Oak, MI 48073
Names on its website: Berkley, Birmingham, Ferndale, Madison Heights, Troy, Southfield, Livonia, Sterling Heights, Warren, Rochester Hills and more
D&G Heating and Cooling, Inc.
Based in Livonia, MI · 19140 Farmington Rd, Livonia, MI 48152
Names on its website: Allen Park, Canton, Dearborn, Garden City, Northville, Plymouth, Redford, Royal Oak, Southfield, Troy and more
Diversified Heating & Cooling, Inc.
Based in Farmington Hills, MI · 20789 Parker St, Farmington Hills, MI 48336
Names on its website: Berkley, Beverly Hills, Birmingham, Bloomfield Hills, Farmington, Livonia, Northville, Novi, Plymouth, Royal Oak and more
Ehlers Heating & Cooling
Based in Livonia, MI · 30885 Eight Mile Rd, Livonia, MI 48152
Names on its website: Plymouth, Northville, Novi, Canton, Farmington, Farmington Hills, West Bloomfield, Westland, Redford, Walled Lake and more
Harriman Heating & Air Conditioning
Based in Farmington Hills, MI · 20764 Whitlock St, Farmington Hills, MI 48336
Names on its website: Beverly Hills, Birmingham, Bloomfield Hills, Canton, Livonia, Northville, Novi, Plymouth, Southfield, Troy and more
License number shown on its website: #7115823 (Michigan)
Mechanical Heating, Cooling & Electrical
Based in Dearborn Heights, MI · 6192 N Telegraph Rd, Dearborn Heights, MI 48127
Names on its website: Dearborn, Detroit, Livonia, Southfield, Warren, Sterling Heights, Troy, Farmington, Novi, Canton and more
Mike's Heating & Cooling Inc.
Based in Utica, MI · 46149 Van Dyke, Utica, MI 48317
Names on its website: Clinton Township, Fraser, Macomb Township, Madison Heights, Rochester, Rochester Hills, Roseville, Saint Clair Shores, Shelby Township, Sterling Heights and more
National Heating & Cooling
Based in Detroit, MI · 23660 Grand River Ave, Detroit, MI 48219
Names on its website: Farmington Hills, Southfield, Livonia, Dearborn, Royal Oak, Troy, Warren, Westland, Ferndale, Novi and more
Pete's Heating & Cooling, Inc.
Based in Livonia, MI · 12070 Farmington Rd, Livonia, MI 48150
Names on its website: Farmington, Farmington Hills, Plymouth, Northville, Westland, Garden City, Redford, Dearborn Heights
R&L Heating and Cooling
Based in Taylor, MI · 21159 Goddard Rd, Taylor, MI 48180
Names on its website: Allen Park, Dearborn, Dearborn Heights, Livonia, Madison Heights, Royal Oak, Southfield, Sterling Heights, Troy, Warren and more
License number shown on its website: 7116095
Royal Oak Heating, Cooling, Electrical & Plumbing
Based in Troy, MI · 2071 Stephenson Hwy, Troy, MI 48083
Names on its website: Clawson, Birmingham, Royal Oak, Madison Heights, Sterling Heights, Rochester Hills, Warren, Ferndale, Southfield, Berkley and more
Technical Hot & Cold
Based in Westland, MI · 38568 Webb Dr, Westland, MI 48185
Names on its website: Canton, Farmington, Farmington Hills, Garden City, Livonia, Northville, Novi, Plymouth, Wayne
United Heating & Cooling Company, LLC (HVAC by United)
Based in Detroit, MI
Names on its website: Macomb County, Oakland County, Wayne County
WG Heating & Cooling
Based in Shelby Township, MI · 14202 Industrial Center Dr, Shelby Township, MI 48315
Names on its website: Clinton Township, Macomb Township, Mount Clemens, Roseville, Rochester, Rochester Hills, St. Clair Shores, Sterling Heights, Troy, Utica and more
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 Detroit area
HVAC licenses in Michigan
HVAC contractors are licensed by the state.
Who licenses: Michigan Dept. of Licensing and Regulatory Affairs (LARA), Bureau of Construction Codes
License types: Mechanical Contractor License (classifications: Hydronic heating and cooling and process piping; HVAC equipment; Ductwork; Refrigeration; Limited heating service; Unlimited heating service; Limited refrigeration and air conditioning service; Unlimited refrigeration and air conditioning service; Fire suppression; Specialty).
Companies: Under the Skilled Trades Regulation Act (2016 PA 407), MCL 339.5809, a person may not perform installations, alterations or servicing of the listed mechanical work classifications without a mechanical contractor's license from LARA. The statute carves out a few exceptions, such as unpaid charitable work on 1-4 family homes.
Local rules: Michigan law (MCL 339.5811) bars municipalities from setting their own licensing requirements for these mechanical classifications, though local permits and inspections still apply.
Check a license: michigan.gov
Verify the company's Mechanical Contractor License and its classifications on the state license search before work begins.
Federal rule: in every state, technicians who handle refrigerant must hold EPA Section 608 certification, whatever the state or city requires.
Sources: michigan.gov, legislature.mi.gov, legislature.mi.gov, legislature.mi.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 Detroit winter
Heating season is the long one in Detroit, 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
Detroit HVAC questions
How many HVAC companies are listed in Detroit?
17 HVAC companies, each based within about 25 miles of Detroit. They are listed alphabetically.
Which Detroit HVAC companies say they offer 24/7 emergency service?
8 of the businesses listed here say on their own website that they offer 24/7 or 24-hour emergency service: Aladdin Heating & Cooling, C & C Heating & Air Conditioning, Comfort Zone Heating and Cooling LLC, D&G Heating and Cooling, Inc., Diversified Heating & Cooling, Inc., Ehlers Heating & Cooling, Mike’s Heating & Cooling Inc., Technical Hot & Cold. Call to confirm availability and after-hours rates.
Do HVAC contractors in Detroit need a license?
Michigan licenses HVAC contractors statewide through the Michigan Dept. of Licensing and Regulatory Affairs (LARA), Bureau of Construction Codes. Check a license at michigan.gov.
Which Detroit companies work on heat pumps?
12 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?
14 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: Cincinnati, OH · Columbus, OH · Indianapolis, IN · Cleveland, OH · Milwaukee, WI · Grand Rapids, MI · Madison, WI · Dayton, OH. All of Michigan.
Request an HVAC company
Ask us to find an HVAC company in Detroit
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.