Updated October 2026
DC housing is its own challenge: century-old rowhouses with steam and hot-water radiators, condos with tight mechanical closets, and plenty of homes on their third or fourth heating system. Not every HVAC company wants that work, so it pays to find one that does.
Below are heating and cooling companies based in the District, plus a few nearby specialists in boilers, radiators and chimneys who regularly work in DC homes. Heating season is starting, so book a tune-up before the first cold snap.
How this list was put together: every company here is an independent, locally operated HVAC business we verified against its own website or a public business record. Nobody paid to be included, and the order within each area is not a ranking. Each name links to the company’s free DMV Business Connect listing with contact details, services and a map.
Jump to: HVAC companies based in DC · Boiler, radiator & chimney specialists serving DC · Fall heating checklist · How to choose
HVAC companies based in DC
Air Master Heating and Cooling LLC
Washington, DC. HVAC contractor on Georgia Avenue NW handling heating and cooling repair, installation and maintenance contracts. Also offers duct cleaning, indoor air quality work and emergency service. View listing and contact info
Al’s Twin Air, LLC
Washington, DC. Al’s Twin Air is a Washington, DC company offering HVAC service for split systems, boilers, radiators and chillers, plus plumbing, electrical and mechanical work. It provides maintenance plans and 24/7 emergency service across the DC metro area. View listing and contact info
DC Air Conditioning & Heating
Washington, DC. Residential and commercial HVAC contractor based on 14th Street NW, in business since 2003. Installs and repairs boilers, furnaces, heat pumps and geothermal systems, plus central AC and ductless mini-splits. View listing and contact info
Hugee Corporation
Washington, DC. Hugee Corporation is a family-owned and operated HVAC company founded in 1984, with an office on New York Avenue NE. It serves homes and businesses in Washington, DC, Prince George’s, Montgomery and Anne Arundel counties, and Northern Virginia. View listing and contact info
JD Air, LLC
Washington, DC. HVAC installer serving DC, Maryland and Virginia. Installs heating and cooling systems and offers the Life Savor maintenance and repair plan with 24/7 system monitoring. View listing and contact info
Jimmy Gusky Heating And Air, LLC
Washington, DC. Licensed, bonded and insured heating, cooling and plumbing contractor headquartered in Washington, DC. Handles boiler repair, installation and hydronic system maintenance alongside furnaces, heat pumps and water heaters. View listing and contact info
McMurray’s Heating and AC
Washington, DC. Washington, DC heating and cooling company operating since 2015 with NATE-certified technicians. Repairs and replaces heating and AC systems, cleans ducts and replaces thermostats, with 24/7 emergency service. View listing and contact info
Polar Bear Air Conditioning & Heating Inc.
Washington, DC. Polar Bear is a family-owned, locally operated heating and air conditioning company based in Georgetown. It repairs and installs AC systems, ductless mini splits, furnaces, boilers and heat pumps, and offers maintenance programs for homes and commercial buildings. View listing and contact info
Riley Heat & Air
Washington, DC. Heating and air conditioning company with a DC office on I Street NW and a second office in Upper Marlboro, MD. Handles furnace repair, service and installation, AC work and duct cleaning. View listing and contact info
STM Services LLC
Washington, DC. Commercial and residential HVAC service contractor in Washington, DC with more than 20 years of experience. Installs and repairs furnaces and AC systems and runs preventive maintenance contracts. View listing and contact info
Su’Coy Heating, AC & Duct Cleaning
Washington, DC. Su’Coy has handled heating and air conditioning work in Washington, DC and Prince George’s County since 1996. The team installs and repairs AC systems, furnaces and heat pumps, cleans ductwork and addresses indoor air quality, with emergency service available around the clock. View listing and contact info
Ubuntu Air Duct Cleaning & Home Services
Washington, DC. Locally owned company in downtown DC focused on air duct and dryer vent cleaning, with HVAC maintenance, repair and replacement. Works in Georgetown, Dupont Circle, Logan Circle, Shaw, Columbia Heights, Bloomingdale and NoMa. View listing and contact info
Boiler, radiator & chimney specialists serving DC
Nero’s Heating and Air
Cheverly, MD. Owner-run heating and cooling company in Cheverly with 18+ years of experience. Repairs and replaces furnaces and heat pumps, installs mini-splits and handles water heaters. View listing and contact info
Priddy Chimney Solutions
Beltsville, MD. Family-owned, woman-led chimney company working since 1982, licensed in Maryland and DC. Sweeps and inspects chimneys, installs caps and liners, repairs fireplaces and masonry, and converts fireplaces to gas or wood stoves. View listing and contact info
ADI Heating & Air Conditioning, LLC
Gaithersburg, MD. Montgomery County HVAC company with over 40 years of experience serving upper Montgomery County and Northwest Washington, DC. Services boilers, radiators, radiant floors, oil heat, furnaces and heat pumps. View listing and contact info
Foley Mechanical, Inc.
Lorton, VA. Mechanical contractor in Lorton founded in 2002, known for steam heating and boiler work. Diagnoses noisy radiators and inefficient steam systems and installs hydronic radiant floor heat and snow melt systems. View listing and contact info
Before you book: a quick fall heating checklist
- Swap the air filter. A clogged filter is the most common reason a furnace short-cycles or a heat pump struggles on the first cold night.
- Run the heat for 15 minutes before it gets cold. A burning-dust smell for a few minutes is normal; a smell that sticks around is not.
- Test your carbon monoxide detectors if you have any gas appliances, a fireplace or an attached garage.
- Clear leaves and debris from around the outdoor heat pump unit and keep at least two feet of space around it.
- Book a tune-up in October or early November. Most local companies get booked out once the first hard freeze hits.
- Ask about maintenance plans. Many of the companies below offer priority scheduling and waived after-hours fees for plan members.
How to choose an HVAC company
- License and insurance. In DC, mechanical contractors need a license from the Department of Licensing and Consumer Protection (DLCP), and most equipment replacements need a permit. Ask the company to pull the permit, not you.
- Written estimates. Get at least two for any replacement. A good estimate names the equipment brand, model, efficiency rating and what’s included (removal, permits, thermostat, warranty).
- Load calculation. For a new system, the company should size it with a Manual J load calculation, not just match the old unit.
- Emergency service. Ask whether they answer nights and weekends in winter and what the after-hours fee is.
- Warranty and plans. Ask how long labor is covered, and what a yearly maintenance plan costs and includes.
More heating and cooling help in the DMV
See every heating and cooling company on the site in the DMV HVAC directory, or check our guides to the best HVAC companies in Northern Virginia and best HVAC companies in Maryland. If a cold snap freezes a pipe or your water heater quits, our list of the best plumbers in DC, Maryland and Northern Virginia has you covered. Getting the roof ready too? See our DMV roofers guide.
Run an HVAC company in the DMV that isn’t on this list? Add your business for free.
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