5.0 ★★★★★1,100+ reviews on Google, Angi, Yelp, the BBB and Facebook. Pick your day and time online.5.0 ★★★★★ 1,100+ reviewsBook Online
(703) 997-9757CallBook Online
MenuClose
Heating
Air Conditioning
Plumber
Drains & Sewers
Water Heater
Duct & Dryer Vent Cleaning
Price Estimators
Offers
About Us
Service Areas
Commercial

Open 24/7 for emergencies

SwiftPro HVAC technician and service truck, diagnosing air conditioning system in Northern Virginia.
Marshall, Virginia

AC repair in Marshall.

The diagnostic visit is $99, and a run capacitor replaced is $240 to $370 from our published price book.

Get your price in writing

Send this and the office calls or texts you back to set a time.

This field is for validation purposes and should be left unchanged.

We’ll call or text this number about your request. By sending it you agree to our terms and privacy policy.

Rather talk now? (703) 997-9757

Air conditioning and heat pump repair in Marshall, 20115, village or farm, priced in writing before any work starts.

  • Prices in writing, first
  • Common parts on the truck
  • Dedicated HVAC team

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

What AC repair costs in Marshall.

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 Marshall

Most Marshall outdoor units are heat pumps, and the old village houses cool however they could be fitted.

Electricity heats about six in ten Marshall owner homes, and propane and wood most of the rest; natural gas lines barely reach 20115. Most of that electric heat comes from a heat pump, so the same outdoor unit handles August and January. A capacitor or contactor that’s starting to go will quit in the next season that leans on it, and a summer visit can catch it first.

In a propane house, about one owner home in five here, the cooling is either an air conditioner on top of the propane furnace, sharing its blower, or a heat pump with the furnace as backup. Either way one fan moves the cooled and the heated air, so a tired blower gets noticed in summer and winter alike.

The village’s oldest houses were never built for central air. The County’s plan describes I-houses on Main Street, two stories tall and one room deep, story-and-a-half frame houses on Anderson Avenue from the 1920s to the mid 1940s, and Cape Cods among its Colonial Revival houses. Ducts in houses like those went in later, often with long runs upstairs and one small return, and a starved return is a common way a coil freezes. Where there’s nowhere to hide ductwork, ductless heads on the wall are often the better fix, and we repair those too.

North of Main Street the plan dates many houses to the 1960s through the 1990s, and the median owner home in 20115 is from 1986, so most have gone through two or three systems by now. If the outdoor unit predates 2010 it probably holds R-22, and since nobody makes that refrigerant anymore, a leak turns into a choice between repair and replacement. You’d see both prices.

Before and after of a condenser coil on a Northern Virginia air conditioner, the fins matted grey with dirt on the left and clean metal on the right after a SwiftPro cleaning

By the numbers

Marshall houses, by the numbers

From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.

Marshall

ZIP 20115 as a whole: every Marshall address, the village included. The Census place for the village alone has too few homes for steady figures.

  • Median home built1986 Census
  • Built before 1980about 4 in 10 Census
  • Built since 2000about 2 in 10 Census
  • Most homes aresingle-family houses, about 8 in 10 Census
  • Heated withelectricity, about 6 in 10 Census
  • Rentedabout 3 in 10 Census
  • Electric heat here usually means a heat pump, so the outdoor unit works all year and an AC problem is often a heating problem waiting for January.

What you’d notice

What a failing AC in Marshall usually does.

Upstairs stays hot while downstairs is fine

In a story-and-a-half house the bedrooms sit right under the roof, fed by the longest and smallest ducts in the house. Cool downstairs and stuffy upstairs is usually airflow, a crushed run or a return that can’t keep up, before it’s refrigerant. Sometimes a ductless head upstairs is the real fix.

The heat pump is icing up in summer

Ice on the outdoor lines in July means low refrigerant or starved airflow. Shut it off to thaw and call; running it iced can take out the compressor.

The air coming out is warm

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.

Choosing who fixes it

How to pick the best AC repair company in Marshall.

Questions worth asking anybody who comes out, us included.

  1. Do they work on ductless systems as well as central air?

    In Marshall’s older houses the cooling is sometimes a ductless mini split, or a mix of one and a central system. Ask whether the tech services both before you book.

  2. Do they publish prices?

    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.

  3. Do they measure before they sell refrigerant?

    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.

  4. Will they tell you when it’s the end of the road?

    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 SwiftPro technicians going over a work order on a tablet in front of the van fleet in Northern Virginia

Two of our crew going over a work order before the day's calls.

From our Google reviews

What our customers say.

5.0 stars across 1,132 reviews. Read them on our reviews page.

Jamie was great! Very helpful and informative; got our AC running again quickly and at a very reasonable price.

Clark H., Google review, July 2025
Eleven SwiftPro heating, cooling and plumbing technicians in uniform in front of the wrapped SwiftPro vans in Northern Virginia
Some of the SwiftPro crew: the people behind these reviews.

Questions

AC repair questions from Marshall.

Is my Marshall outdoor unit a heat pump or an air conditioner?

Check the thermostat for an aux or emergency heat setting; if it has one, the outdoor unit is a heat pump, the usual case here. Propane houses vary: some have a plain air conditioner over the furnace, some a heat pump that hands off to the furnace when it’s cold.

Do you come out to farms and houses outside the Marshall service district?

Yes, anywhere with a Marshall 20115 address, and the price book is the same on Main Street as on a farm lane. Out in the open, keep a couple of feet of clear ground around the outdoor unit, and tall grass and hay chaff off its coil.

How much does AC repair cost in Marshall?

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.

Should I repair it or replace it?

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

Tell us what your AC is doing.

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 Marshall 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.

Call Now Book Online
5.01,132 reviews