HVAC, Heating & AC Repair in Manassas, VA
From historic Old Town to Sumner Lake — trusted heating, cooling and plumbing across Manassas and Prince William County.
Manassas’s trusted heating & cooling company
R.A. Dobson has served the Manassas area for over 50 years, from the brick storefronts of historic Old Town to the family neighborhoods of Georgetown South, Point of Woods and Sumner Lake. Our licensed technicians handle heating, cooling and plumbing across Manassas, Manassas Park and the surrounding Prince William County communities.
Manassas homes span a wide range — Victorian and early-20th-century houses near the railroad in Old Town, dense 1980s and 90s subdivisions, and newer construction toward Bristow and Gainesville. Add the many rural properties near the battlefield that run on well and septic, and you need an HVAC and plumbing company that adapts to each home.
From an AC that fails in a July heat wave to a furnace that quits before a cold snap, R.A. Dobson responds quickly and quotes honestly. As a Carrier Factory Authorized Dealer, we install efficient, right-sized systems and guarantee our work.
HVAC & plumbing services in Manassas
Air Conditioning
AC repair, installation & tune-ups to beat NoVA summers.
Learn more →🔥Heating & Furnaces
Furnace repair and high-efficiency replacements.
Learn more →♻Heat Pumps
Energy-smart heat pump installation & repair.
Learn more →🔧Plumbing
Drains, leaks, sump pumps & emergency plumbing.
Learn more →🚿Water Heaters
Tank & tankless repair, replacement & install.
Learn more →🌬️Indoor Air Quality
Air purifiers, humidifiers & UV for healthier air.
Learn more →🌱 Go Green with R.A. Dobson
Heat pumps and high-efficiency Carrier systems that cut energy bills — rebates and incentives included.
See the Go Green program →Flexible financing
New system without the sticker shock — pre-qualify in minutes, no impact to credit.
Explore Financing →Manassas neighborhoods we serve
From Old Town to the newer neighborhoods along Sudley and Liberia, R.A. Dobson is your local team. If you’re in the 20109, 20110 or 20111 ZIP codes, we serve you.
Common Manassas HVAC & plumbing needs
Old Town Manassas has Victorian and early-1900s homes near the historic railroad depot, often with retrofitted systems, radiators and tight spaces where ductless mini-splits shine. The 1980s and 90s neighborhoods like Georgetown South and Point of Woods are now at the age where original furnaces and heat pumps are due for efficient replacements.
Toward the Manassas National Battlefield and the county’s edges, larger-lot homes frequently run on well water and septic, which shapes how we handle plumbing and water heaters. Whether you own a townhome near Sumner Lake or an older home in Old Town, R.A. Dobson brings the local experience Manassas homes require.
Manassas HVAC & plumbing FAQs
Do you offer same-day service in Manassas?
Often, yes — we prioritize no-heat and no-cooling calls across Manassas. Call (703) 481-3700 for the soonest availability.
Do you work on older Old Town Manassas homes?
Yes. We handle radiators, retrofitted systems and the tight spaces common in Old Town’s Victorian and early-1900s homes, including ductless mini-splits where adding ductwork isn’t practical.
Do you serve well and septic homes near the battlefield?
We do. Many larger-lot Manassas-area properties run on well water and septic, and we service the water heaters, pumps and plumbing that go with them.
Do you cover Manassas Park too?
Yes — we serve the City of Manassas, Manassas Park and the surrounding Prince William County neighborhoods.
Are you licensed and insured?
Yes — R.A. Dobson is fully licensed and insured in Virginia (VA #2701017843) and is a Carrier Factory Authorized Dealer.
Do you offer free estimates?
Yes — estimates on installations and replacements are free and no-obligation. Request your free quote or call (703) 481-3700.
Other areas we serve near Manassas
Ready for fast, local service?
Serving Manassas and Prince William County for 50+ years. Get your free estimate today.