About Three Rivers HVAC
Frederick's locally owned heating and cooling company since 2003.
Frederick's Hometown HVAC Company
Three Rivers HVAC was founded in Frederick, MD with one mission: deliver honest, high-quality HVAC services to the communities we call home. Today, our team of NATE-certified technicians serves homeowners and businesses across Frederick, Montgomery, Washington, and Carroll counties.
We built our reputation one job at a time — by showing up when we said we would, explaining the problem clearly, and never recommending work that wasn't needed. That's still how we operate today, whether it's a quick tune-up or a full system replacement.
Three Rivers HVAC is a Carrier Authorized Dealer and an EPA 608 certified company. Every technician on our team holds NATE certification — the highest standard in HVAC. We're proud to serve the communities across Frederick, Montgomery, Washington, and Carroll counties.
2003
Year Founded
5,000+
Homes Served
NATE
Certified Technicians
100%
Locally Owned
Our Credentials
-
NATE Certified
North American Technician Excellence — the industry's most respected certification.
-
EPA 608 Certified
Licensed to handle and recover refrigerants on all HVAC systems.
-
Maryland Licensed Contractor
Fully licensed by the State of Maryland for HVAC work.
-
Carrier Authorized Dealer
Factory-trained and authorized to install and service Carrier equipment.
-
Fully Insured
Carries complete general liability insurance and workers' compensation.
-
BBB Accredited
A+ rating with the Better Business Bureau.
Full-Range HVAC Services
We provide the full range of residential and light commercial HVAC services across Central Maryland.
Air Conditioning
Expert AC installation, repair, and maintenance for Frederick, MD homes and businesses.
Heating & Furnace
Reliable furnace installation, repair, and tune-ups to keep Frederick area homes warm all winter.
Heat Pumps
Energy-efficient heat pump installation and service for year-round comfort in the Frederick, MD area.
Ductwork & Ventilation
Professional duct installation, sealing, and cleaning for improved HVAC efficiency and air quality.
Indoor Air Quality
Air purifiers, humidifiers, and filtration systems for healthier indoor air in Frederick area homes.
Emergency HVAC Service
24/7 emergency HVAC repair throughout Frederick, MD — no heat or AC? We're on our way.
About Us — FAQ
How long has Three Rivers HVAC been in business?
We have been serving the Frederick area since 2003 — over 20 years of keeping local homes and businesses comfortable.
Are you locally owned?
Yes. Three Rivers HVAC is a locally owned and operated company based in Frederick, MD. We are not a franchise and all decisions are made locally.
What certifications do your technicians hold?
Our technicians hold NATE certification (North American Technician Excellence), EPA 608 certification for refrigerant handling, and Maryland contractor licensing.
Ready to Work With Frederick's Best HVAC Team?
Locally owned and operated. Honest pricing. NATE-certified technicians.