Open 24/7 for emergencies
The diagnostic visit is $99, and a run capacitor replaced is $240 to $370 from our published price book.
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AC and heat pump repair in Lorton, from Laurel Hill’s original systems to Newington’s townhouse heat pumps, priced from a published book first.
5.0 stars across 1,132 reviews
One of our HVAC technicians beside an outdoor unit at a Northern Virginia home, the vans at the curb.
Licensed and insuredVirginia Class A contractor #2705192276
24/7 emergency serviceOften same-day, and we will tell you honestly when we can get there.
Our own HVAC installersA dedicated heating and cooling team, separate from our plumbers
Price in writing firstYou see every option priced before anything is ordered
What it costs
The same price book as our AC repair page. The diagnostic visit is $99, and the common parts ride on the truck, so most of these get fixed on the first visit.
Run capacitor replaced
$240 to $370
Contactor replaced
$290 to $425
Condensate drain cleared
$175 to $420
Refrigerant topped up
$190 to $740
Blower wheel pulled and cleaned
$300 to $440
Refrigerant leak found and repaired
$1,850 to $2,700
or $31/mo at 0% APR for 60 months
Repair diagnostic visit
$99
Monthly figures: 60mo @ 0% APR on each starting price, the whole price financed, on approved credit. Longer plans lower the payment and cost more in total. The lender sets the final terms. How financing works
Often same-day, and we will tell you honestly when we can get there.
With Comfort+ membership, $20 a month or $199 a year, the diagnostic visit is included, any service is 15% off, and the cooling and heating maintenance visits are part of the membership.
What’s different in Lorton
About six in ten Laurel Hill homes went up after 2000, the median owner home in 2002, and in plenty of them the air conditioner out back is still the one that came with the house. A system from those years almost always runs R-22, a refrigerant that stopped being produced at the start of 2020, so every pound added now comes out of recovered stock and is priced like it. Small electrical parts are still worth fixing on one: a run capacitor is $240 to $370, a contactor $290 to $425. A leak is where the arithmetic turns. Finding and repairing one runs $1,850 to $2,700, and on a twenty-year-old R-22 system that money usually does more toward a new one.
Newington, on the north edge of Lorton, is the older end, and close to six in ten of its owners heat with electricity. That’s heat pump territory. A heat pump does the cooling from May to September and the heating from November to March, so the outdoor unit racks up far more running hours than an air conditioner its age, and a 1980s townhouse there is usually on its second or third one. When it stops cooling in August, get it fixed properly, because the same unit is your heat in January.
Lorton’s middle Census place has a quarter of its homes in condos and apartments, and over a third of them are rented. Condo cooling there tends to be a small ductless split or a fan coil unit, and the association may control the roof and the line set, so the association’s rules come before any part is ordered. In a rental, tell us who approves the work; the owner and the tenant see the same price from the same book.
In the two-story single-family houses, about four in ten of Laurel Hill’s homes, the bedroom floor is often cooled by a second system with its air handler in the attic, sitting over a pan with a float switch. When the condensate line clogs, the switch shuts the cooling off to keep water out of the ceiling, and from downstairs it looks like a dead air conditioner. Clearing that drain runs $175 to $420.
Neighborhood by neighborhood
Census figures for each place, and what that usually means for the air conditioning. Median year built and heat count owner-occupied homes only.
| Place | Median home built | Most homes are | Heated with | What the cooling usually is |
|---|---|---|---|---|
| Lorton | 2001 | single-family houses, about 4 in 10 | gas, about 7 in 10 | Newer houses: many original systems at 15 to 25 years. |
| Newington | 1981 | townhouses, about 6 in 10 | electricity, about 6 in 10 | Mostly electric heat: heat pumps that cool in summer and heat in winter. |
| Laurel Hill | 2002 | single-family houses, about 4 in 10 | gas, about 8 in 10 | Newer houses: many original systems at 15 to 25 years. |
| Mason Neck | 1973 | single-family houses, nearly all | electricity, about 6 in 10 | Mostly electric heat: heat pumps that cool in summer and heat in winter. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
ZIP 22079 as a whole: every Lorton address. Most of Newington, in the table, has Springfield mail.
What you’d notice
Ice forming on the outdoor unit’s lines in July points at a refrigerant leak or a choked indoor coil. On a Newington heat pump or a Laurel Hill air conditioner alike, switch the system off at the thermostat, let it melt, swap the filter and call. A compressor that keeps running frozen doesn’t last.
Usually the outdoor unit has stopped running. A hum with no fan turning is almost always the run capacitor; silence while the thermostat calls is usually the contactor.
That’s an airflow problem far more often than a refrigerant problem: a clogged filter, a matted coil, or a blower wheel packed with dust.
Choosing who fixes it
Questions worth asking anybody who comes out, us included.
On an early 2000s Laurel Hill system the data plate usually says R-22, and that changes the price of every pound. A good tech reads the plate, tells you what the refrigerant costs, and goes looking for the leak instead of topping it up each summer.
A company that prints what a capacitor or a contactor costs has already told you the number. One that won’t say until the tech is in your driveway hasn’t.
A healthy system drops the air somewhere around 16 to 22 degrees across the indoor coil. Low refrigerant means a leak, and topping it up every summer is the expensive way to find that out.
Some repairs aren’t worth doing on a 20-year-old system. The good answer shows you the repair price and the replacement price side by side and lets you pick.
Two of our crew going over a work order before the day's calls.
From our Google reviews
5.0 stars across 1,132 reviews. Read them on our reviews page.
SwiftPro was able to schedule a repair visit that day when our a/c was blowing warm air. They sent out a qualified technician who communicated effectively and resolved our problem quickly. He also made a few recommendations to keep our unit in working order. Thanks Jaime for the great job.
Where we work
Next door to Lorton: Fort Belvoir, Springfield, Woodbridge, Fairfax Station and Burke.
Questions
For the small parts, almost always: a capacitor or a contactor can buy years for a few hundred dollars. For a refrigerant leak on the R-22 system that came with the house, look at a replacement price before you commit. We’ll give you both numbers and you decide.
Not by itself. On the hottest days a system sized right for the house can run for hours and still be healthy. What isn’t normal is air at the registers that’s barely cooler than the room, or a house that never reaches the setting after the sun goes down. Either one is worth a diagnostic visit, $99.
Usually the owner, and the lease is the final word. Give us the owner’s number along with yours; the repair is priced from the book before anything is replaced, and both of you can see the number.
The diagnostic visit is $99. The common repairs: a run capacitor $240 to $370, a contactor $290 to $425, a condensate drain cleared $175 to $420, refrigerant topped up $190 to $740. A refrigerant leak repair runs $1,850 to $2,700.
Fix the cheap parts on almost anything. Think twice about a big repair on a system over 15 years old, and about any leak on an R-22 system. The HVAC estimator prices a new system in about a minute, so you can put the two numbers side by side.
Ready when you are
Call, or send the form at the top. The tech prices the repair from the book before starting, and if it’s the end of the road you’ll hear that first.
SwiftPro Heating, Cooling & Plumbing
4230 Lafayette Center Dr N, Chantilly, VA 20151
44679 Endicott Dr, Suite 211, Ashburn, VA 20147
Virginia Class A contractor license #2705192276
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Lorton and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 1,132 reviews on Google, Angi, Yelp, the BBB and Facebook. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
From SwiftPro Heating, Cooling & Plumbing in Chantilly. Housing figures are the Census Bureau’s American Community Survey, 2020 to 2024, for each place named; permit, water and sewer facts link to each office’s own page and were checked in September and October 2026.