AC Installation & Replacement in Sterling, VA
Energy-Efficient Cooling, Expertly Installed
Energy-Efficient Cooling, Expertly Installed
A new air conditioner is one of the biggest comfort upgrades you can make to your Northern Virginia home — and getting the installation right matters just as much as the equipment itself. R.A. Dobson has installed and replaced systems across Sterling since 1975, and as a Carrier Factory Authorized Dealer, we size, install, and commission every system to run at peak efficiency for years to come.
We help you choose the right system for your home and budget, handle the entire installation cleanly and on schedule, and stand behind our work so you can relax.
New AC Installation Done Right
A system is only as good as its installation. Every one of ours includes:
Why efficiency pays off. A modern high-efficiency air conditioner (measured by its SEER2 rating) can noticeably lower your summer energy bills compared with a system that is 10 or more years old. We show you the real trade-offs so you can pick the system that fits your home and your budget.
Financing available. You should not have to wait to be comfortable — install now and pay over time with our financing options.
Ask about our current offer. We frequently run a promotion on new Carrier HVAC installations — contact us for the latest.
Why Choose R.A. Dobson for Your New AC
Carrier Factory Authorized Dealer
quality equipment, factory-trained installation
Family-Owned Since 1975
three generations of Northern Virginia comfort
Right-Sized Systems
we calculate the correct size for your home
One-Year Service Warranty
on top of the manufacturer’s coverage
Flexible Financing
install now, pay over time
4.8-Star Rated across Sterling and Northern Virginia
Serving Sterling, Ashburn, Leesburg, Herndon, Reston, Chantilly and all of Northern Virginia. Not sure whether you need a repair or a replacement? Start with our AC repair team or request a free estimate.
Explore Our Other Services
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 →Serving All of Northern Virginia
Based in Sterling · fast response across Loudoun & Fairfax Counties.
Frequently Asked Questions
How fast can you get my AC running again?
We prioritize no-cooling calls · especially during heat waves · and often offer same-day service across Northern Virginia. Call (703) 481-3700 and we will give you a real arrival window.
Should I repair or replace my system?
If it is under 10 years old and maintained, repair is usually the smart call. Older systems, frequent breakdowns, or phased-out R-22 refrigerant tip the math toward a properly sized, high-efficiency replacement · we will walk you through both numbers honestly.
Do you service all brands?
Yes · our certified technicians repair every major make and model, and as a Carrier Factory Authorized Dealer we install the industry's most reliable equipment.
How much does it cost?
You get a clear, upfront price before any work begins · never a surprise. Estimates on installations and replacements are free: request your free quote.
Will regular maintenance really help?
Absolutely · seasonal tune-ups protect efficiency, catch small problems early, and keep manufacturer warranties valid. Ask about our Preferred Maintenance Agreements.
Ready to get started?
Fast, honest service from your local, family-owned team · since 1975.