Haymarket, VA HVAC Service, Dominion Valley to the Bull Run Mountains
Air conditioners, furnaces and heat pumps across 20169, inside the Town of Haymarket and out in the county, from Dominion Valley to the homes along Oakland Ridge Road.
Haymarket Calls We Answer
Haymarket 20169 is one of our busier ZIPs, and most of it is cooling work and system replacements.
Housing in 20169 is new, and most of it heats with natural gas. New doesn't mean new equipment, though. A system from 2003 is past 20.
Jim, Owner & Licensed HVAC Contractor
Haymarket Areas We Serve
Dominion Valley Country Club
Toll Brothers started Dominion Valley in the early 2000s and was still adding townhomes in 2024. It's 2,467 homes, detached and attached, most of them behind one of eight gates. Tell us which gate to use. Systems here run from a couple of years old to well past 20, so we look before we guess. Most of our Haymarket work is here: diagnostics, furnace repairs and replacements.
Piedmont
1,619 homes in three parts: gated Piedmont, Old Carolina Estates and the Piedmont Riding Club. It sits near I-66 and Route 15 around a Tom Fazio golf course. The gated section has two staffed gates, so pass along your visitor instructions when you call. We run tune-ups and plan visits here, and blower motor repairs in the Villages of Piedmont.
Carters Mill
One of the newer communities in 20169. Our work here has been diagnostics and system replacements.
Toward the Bull Run Mountains
Out on Oakland Ridge Road and in Bull Run Mountain Estates, Newhope Forest and Crescent Hills, homes sit on bigger lots west of town. Refrigerant leaks, TXV repairs and capacitors are regular calls out here.
The Town of Haymarket
The incorporated town is small. The whole thing has been a historic district since 1994, and a house built before 1950 counts as a historic building. Those are the homes where any visible change to the outside gets a close look. We've worked in Haymarket Station, inside town limits.
The Haymarket ZIP Code
20169
A 20169 address can be inside the Town of Haymarket or out in the county. Give us the street and we'll check which rules apply.
Common Haymarket HVAC Problems
AC that can't keep up in July
A lot of our Haymarket calls are cooling calls. Larger homes here often run a separate system for the top floor, and that one works hardest. Dirty coils, refrigerant leaks and dead capacitors are the usual finds.
Oil and propane on older lots
Some older homes and rural lots in 20169 still burn fuel oil or propane. If you're on oil, a switch to a heat pump or gas is worth pricing when the furnace or boiler gets old. Replacing an oil or gas furnace needs a county permit either way.
Big houses, uneven rooms
Large open floor plans and finished basements are common here. Rooms far from the air handler run warm or cold. Balancing the ducts or adding zoning often fixes it for less than a new system.
Haymarket Repair and Replacement Pricing
Repairs begin with a $99 diagnostic visit. For a new system, the instant estimate gives you a range online, and the in-home estimate costs nothing.
Get Your Free Instant EstimateTown, County and HOA Rules
Town address or county address
A Haymarket mailing address doesn't put you inside the town. Dominion Valley, for one, sits a mile or two outside it. Inside town limits there's one extra step. The town gives zoning approval first and then Prince William County issues the permit. The county has handled town building permits since January 2018.
Historic district rules for condensers
The town's design guidelines say outdoor heating and AC units have to be screened from public view with a wall, fence or year-round plantings. Changes in the historic district need a certificate of appropriateness from the Architectural Review Board, which meets the third Wednesday of each month. If your new condenser goes somewhere visible, plan for that meeting.
Utilities
Toll Brothers' Dominion Valley area guide lists NOVEC for power and Washington Gas for gas. Other parts of 20169 can be on Dominion Energy or Columbia Gas of Virginia. Your bill settles it. Columbia customers can get $300 to $500 back on a high-efficiency gas furnace while WarmWise funding lasts.
HOA gates and approvals
Same-spot condenser swaps are simple. Moving a unit or adding one is when you want the HOA paperwork done first.
Town zoning approval
Inside town limits, the Town of Haymarket's zoning approval for county-permitted work costs $25 for a house and can take up to two business days, so we file it before the county permit. Contractors working in town also need a town business license.
What Haymarket Customers Say
“Outstanding response to request for service. Great service once here, super reasonable pricing and great follow up. Would highly recommend and I will be stashing their number in the front of my book of contractors”
Dante C. · Google review, September 2026
“Hands down the best and most honest air company I have experienced.”
Jason R. · Google review, August 2026
“Timely, professional and overall did a great job!”
Jennifer T. · Google review, June 2026
“If you’re in need of professional, friendly, knowledgeable, punctual, and caring service for your HVAC system then Jim and AF1 should be your first (and last) call. When you reach out…you get Jim, not a call center or admin staff. From start to finish he’s the guy you work with...”
Craig C. · Google review, May 2026
“We had a great experience with Air Force One Heating and Air Conditioning. Jim came out the very next day to examine why our heating system was tripping the breaker. He quickly diagnosed the problem and clearly explained our options without any pressure. After we decided to move...”
Bob B. · Google review, February 2026
“I had a service call set up for my AC unit with another company because I already had a service contract with them. When they didn’t show within the window, and let me know 45 minutes after the window that we would need to reschedule, I called Air Force One Heating & Cooling who...”
Caitlin B. · Google review, June 2025
Haymarket FAQs
Do I need Town of Haymarket approval to replace my AC?
Do you service Dominion Valley and Piedmont?
Can you replace an oil furnace in Haymarket?
How fast can you get to Haymarket?
Call Us in Haymarket
Call (202) 246-6999 and we respond right away, or get a free instant estimate online.
Local planning and maintenance resources
- Town of Haymarket building and zoning permits
- Haymarket Architectural Review Board
- Haymarket Historic District Design Guidelines (adopted 2010, current)
- Dominion Valley community guide
- Dominion Valley home count
- Toll Brothers: Dominion Valley Towns Collection
- Regency at Dominion Valley
- Regency at Dominion Valley profile
- About Piedmont
- Piedmont gates and HOA details
- Columbia Gas of Virginia rebates
- Washington Gas service territory
- Prince William County: do I need a permit?
- Dominion Valley Owners Association: Explore Dominion Valley
- Toll Brothers Dominion Valley area guide (PDF)
- Regency at Dominion Valley HOA: home types
- Regency at Dominion Valley HOA: real estate (Toll Brothers)