Serving Fort Washington
AVS Heating and Air Conditioning is a licensed, family-owned HVAC contractor serving homes and businesses in Fort Washington, MD. We repair, maintain and install air conditioners, furnaces and heaters, with same-day service and 24/7 emergency repair.
Tell us the problem and your address. We give you a time when you book and explain the cost before we repair.
VA 703-457-9028MD 301-686-7129
Site visits start at $90. No extra charge for evenings, weekends or holidays.
Fort Washington’s choice
We have served Maryland and Northern Virginia for more than 30 years. Our Maryland HVAC licence number is 520714137895 and our Maryland home improvement licence number is 4192876. Our Maryland office is at 4900 Auburn Ave #200, Bethesda, MD 20814.

Maryland HVAC licence: 520714137895
Maryland office: 4900 Auburn Ave #200, Bethesda, MD 20814
Hours: 24 hours, 7 days a week, 365 days a year
Financing: 0% APR for up to 18 months on select units
Our services
One call covers repair, maintenance and installation for houses and commercial spaces. Details for each service are below.
Diagnosis and repair for air conditioners that blow warm air, will not start or leak.
Fort Washington guide
The questions Fort Washington homeowners ask most.
When your AC stops in a hot spell, you need an answer the same day. We repair air conditioners the day you call, and we tell you honestly whether a repair or a replacement makes more sense. For a replacement, we explain the options and the full cost before any work starts, and financing is available, including 0% APR for up to 18 months on select units. See our Fort Washington AC repair page.
A furnace or heater that will not start, blows cold air or shuts off needs attention before the coldest nights, and in an emergency we respond the same day, 24/7. We check the ignition, the controls and the airflow, and we tell you what failed and what it costs before we repair it. See our Fort Washington heating repair page.
People searching for a certified or licensed HVAC contractor want proof before they call. AVS holds Maryland HVAC licence 520714137895 and Maryland home improvement licence 4192876, and we are insured. We have been in business for more than 30 years as a family company. Ask us for our licence numbers when you call.
A system that fails in a heat wave or on a freezing night cannot wait. We provide same-day service and 24/7 emergency repair in Fort Washington, 365 days a year, with no extra charge for evenings, weekends or holidays. We do not quote a fixed arrival time, because it depends on the day and where our technicians are, so call us and we will give you a time when you book.
“In the middle of the worst heatwave in years, my air conditioner suddenly stopped working… I called AVS, and not only did they come out at 11:00 pm that very same evening, just a few hours after I called, they efficiently and professionally diagnosed the problem as a failed capacitor, replaced it, and had the air conditioner running again in just 15 minutes.” Rich, Google review
You should know the price before work begins. Our site visits start at $90, and most repairs fall between $150 and $300 or more, depending on the part and the labour. Complex repairs get a custom quote before work starts. See our AC repair cost guide.
Fort Washington is in Prince George’s County, where the Department of Permitting, Inspections and Enforcement (DPIE) issues mechanical permits. Since July 15, 2024, trade permits (electrical and mechanical) must be obtained through the county’s Momentum online permit system, and a licensed HVACR master files them. DPIE’s Licensing Center can be reached at 301-883-3840. We confirm permit requirements before we start work. Source: Prince George’s County mechanical permits.
Whether your AC just stopped, your furnace will not start, or you are planning a replacement, one call to AVS gets you a licensed technician from a family-owned company with 30+ years of experience. We provide same-day service and 24/7 emergency repair, with no extra charge for evenings, weekends or holidays.
What happens when you call
Fastest route for your problem
AVS Heating and Air Conditioning, 4900 Auburn Ave #200, Bethesda, MD 20814. Phone 301-686-7129. Email avsservice@yahoo.com. Maryland HVAC licence 520714137895.
The AVS advantage
One family-owned company for every HVAC job, from the first repair to a full replacement.
Step by step
What happens when you call.
Tell us the problem and your address, and whether it is a house, a condo or a business.
We offer same-day service and give you a time when you book. For a no-heat or no-cooling emergency, say so and we treat it as an emergency call.
The technician diagnoses the problem and explains the repair and the cost before starting.
Areas we serve
We provide every service above across Fort Washington.
Fort Washington ForestFriendlyTantallonOxon HillTemple HillsCamp SpringsUpper Marlboro2074420749
If your address is not on this list, call us and we will confirm we can reach you. Nearby areas we also serve: Oxon Hill, Clinton, Temple Hills, Accokeek and Upper Marlboro.
Same-day service and 24/7 emergency repair, with no extra charge for evenings, weekends or holidays. Financing is available, including 0% APR for up to 18 months on select units.
Your questions
Yes. Our Maryland HVAC licence number is 520714137895 and our Maryland home improvement licence number is 4192876.
We repair, maintain and install air conditioners, furnaces and heaters for homes and businesses in Fort Washington.
Our site visits start at $90, and most repairs fall between $150 and $300 or more. Complex repairs get a custom quote before work starts.
Yes. We provide same-day service and 24/7 emergency repair. Call us and we will give you a time when you book.
Yes. We provide 24/7 emergency repair, 365 days a year, with no extra charge for evenings, weekends or holidays.
Mechanical permits come from the county’s DPIE through the Momentum online system, filed by a licensed HVACR master. We confirm permit requirements before we start.