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Annandale, Virginia

AC repair in Annandale.

AC repair in Annandale, 22003: central air on 1960s ductwork, ductless heads and condo heat pumps, each priced from our book before any work starts.

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

  • Prices in writing, first
  • Common parts on the truck
  • Dedicated HVAC team
5.0 stars across 884 Google reviews
A SwiftPro technician in gloves beside an air conditioning condenser on a Northern Virginia driveway, with a wrapped SwiftPro box truck and pickup parked behind him
One of our HVAC technicians beside an outdoor unit at a Northern Virginia home, the vans at the curb.

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What’s different in Annandale

In Annandale, central air rides on the furnace, and ductless heads fill the gaps.

Count the condensers a 1960s Annandale house has worn out and the arithmetic says two or three. The median owner home went up in 1967, and an outdoor unit gives about 15 summers, so the one on the pad likely dates from the 2000s or 2010s. Check its data plate: one installed before 2010 probably runs R-22, whose production ended in 2020, and that decides how a leak gets priced.

Where in 22003 you live changes the system. Wakefield, the Census place around Canterbury Woods, is nearly all single-family houses with about eight in ten owners on gas, so the cooling there is mostly a condenser working through the furnace’s coil and blower. In the Annandale Census place and Woodburn, where the condo buildings are, about a quarter of owners heat with electricity, usually a heat pump that cools in July and heats in January.

Ductless mini-splits are a bigger part of our Annandale work than anywhere else we work regularly. In a house this age, a head tends to go in a room the original ducts never served well: a porch turned family room, a back addition, a lower level finished decades later. One that runs but barely cools often has dusty filters, which lift out from behind the front panel and rinse clean in a sink.

About three Annandale homes in ten are rented, four in ten in Woodburn. Virginia’s landlord law has a landlord who provides air conditioning keep it in good and safe working order, and Fairfax County holds apartment building owners to 77 degrees or cooler in every habitable room from May 15 to October 1.

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
Neighborhood by neighborhood

What’s cooling the houses across Annandale.

Census figures for each place, and what that usually means for the air conditioning. Median year built and heat count owner-occupied homes only.

PlaceMedian home builtMost homes areHeated withWhat the cooling usually is
Annandale1967single-family houses, about 5 in 10gas, about 7 in 10Older houses on their third or fourth system, usually a gas furnace with a separate AC.
Wakefield1968single-family houses, nearly allgas, about 8 in 10Older houses on their third or fourth system, usually a gas furnace with a separate AC.
Woodburn1968single-family houses, about 4 in 10gas, about 6 in 10Older houses on their third or fourth system, usually a gas furnace with a separate AC.
By the numbers

Annandale houses, by the numbers

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

Annandale

  • Built before 1980about 8 in 10 Census
  • Built since 2000about 1 in 10 Census
  • Most homes aresingle-family houses, about 5 in 10 Census
  • Heated withgas, about 7 in 10 Census
  • Rentedabout 3 in 10 Census
  • Gas heat means a furnace inside and a separate air conditioner outside, sharing one blower, so a tired blower shows up in both seasons.
  • Older houses often have returns too small for today’s systems, and a starved return is one of the ways an AC freezes up.
What it costs

What AC repair costs in Annandale.

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
  • Repair diagnostic visit$99

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 you’d notice

What a failing AC in Annandale usually does.

The top of the split-level never cools

Cold air sinks. In a split-level the coil and blower sit on the bottom floor, so bedrooms a flight and a half up get the last, weakest air. If the gap grew this summer, the filter or coil is choking; if it was always there, a ductless head up top does what a bigger condenser can’t.

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.

It runs all day and never cools

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

How to pick the best AC repair company in Annandale.

Questions worth asking anybody who comes out, us included.

  1. Will the tech who fixes your central air also work on the ductless heads?

    Plenty of Annandale houses have both: central air on the original ducts and a mini-split where those ducts fall short. One tech for both covers the house in one trip and sees which system is overworked.

  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.

From our Google reviews

What our customers say.

★★★★★
Jevon was very thorough and provided the essential information needed in deciding whether to replace my home AC
Ted B.Google review, May 2025

5.0 stars across 884 Google reviews. Read them on our reviews page.

Questions

AC repair questions from Annandale.

Who fixes the AC in a rented Annandale condo?

Usually the unit’s owner, when the air conditioning came with the lease: Virginia’s landlord law asks for reasonable air conditioning where it’s provided, and Fairfax County says other rules may apply to a rented condo. Whether the condenser outside is the unit’s or the association’s is in the condo documents.

Why does the tech want into my furnace for an AC problem?

Half of a gas-heat air conditioner lives in there: the coil on top of the furnace, the drain pan under it and the blower that moves the cold air. A matted coil, a caked blower wheel or a clogged pan stops the cooling as surely as a dead part outside. A blower wheel cleaning runs $300 to $440.

How much does AC repair cost in Annandale?

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.

Tell us what your AC is doing.

Call, or book online and pick a window. 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 is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Annandale and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 884 Google reviews. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.

SwiftPro Heating, Cooling & Plumbing, 4230 Lafayette Center Dr, Suite N, Chantilly, VA 20151, (703) 997-9757. Book online, read our reviews, or see every town we serve.

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