Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
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AfterFast, Reliable HVAC Cleaning Across Alexandria
HVAC cleaning in Alexandria, VA typically costs $380 – $640 for a full system on a standard single-family home, and most jobs finish in 3 – 5 hours. If you’ve never had your ducts, coil, and blower cleaned, you’re not alone, most Alexandria homeowners haven’t. We’re Cardinal Air Duct Cleaning, part of the Relay Home Co. family (founded 2005), and we work throughout Alexandria, from Old Town to Del Ray, Rosemont, and the West End. Our technicians arrive with professional-grade Rotobrush agitation tools, Nikro HEPA vacuums, and a written price in hand before a single duct is touched. Call (737) 727-2314 and a live person answers. Always. No voicemail loops, no phone tag.
Why Cardinal Air Duct Cleaning Is Alexandria’s Preferred HVAC Cleaning Company
Alexandria homeowners deal with a specific set of HVAC problems: undersized ducts in pre-1940 row houses, humid crawlspaces off the Potomac, and air handlers that haven’t been opened in decades. We know these systems because we work on them weekly. Our technicians are background-checked, uniformed, and trained on the quirks of historic Alexandria housing stock, including Del Ray bungalows with original gravity-furnace chases and Old Town homes where the return trunk runs through an unconditioned crawlspace. That local knowledge changes how we approach the job. A tract house in Fairfax might need a standard cleaning. An 1890s row house on Prince Street needs a different plan entirely.
Omar Haddad leads our Alexandria crews, and he insists on one standard: the written price you approve before work starts is the price you pay. No per-vent upsells, no bait-and-switch. Alexandria customers consistently tell us the same thing: they expected a generic duct cleaning and got a thorough, documented job with photos of their own ducts. That’s the 365-Day Done Right Promise at work. If the job isn’t right within a full year, we return and correct it at no charge. Every booking, without exception.
We also operate under The Relay Visibility Guarantee. That means a live trackable arrival window, before-and-after photo documentation, and a digital invoice you can pay from a link. You’ll know your technician’s name before they knock. You’ll see what came out of your ducts. You’ll never wonder if the work actually happened.
AC Cleaning in Alexandria
AC cleaning in Alexandria is a different job than in newer Northern Virginia suburbs because so many local systems are retrofits. Original gravity-furnace chases were never sized for today’s central air. As a result, dust, pet dander, and plaster debris accumulate faster, and a dirty evaporator coil costs you real money in cooling performance. Most Alexandria AC cleanings run $180 – $340 and cover the evaporator coil, blower housing, condensate pan, and the first few feet of supply and return plenums. If your system hasn’t been opened in three years or more, this is where you start.
What Gets Cleaned, and When
We remove the blower wheel, brush and HEPA-vacuum the evaporator coil, and flush the condensate line to prevent water damage. Alexandria’s humid summers mean coil buildup is thicker here than in drier climates. You’ll typically want this done every 2 – 3 years, or sooner if you have pets, allergies, or a smoker in the house.
Signs Your AC Needs Attention
Weak airflow from upstairs registers in a Del Ray bungalow usually points to a clogged coil or a blower caked with lint. A musty smell when the system kicks on is another tell. If your AC runs longer than it used to and the house still feels sticky, the coil may be insulated with dust. We photograph everything so you can see exactly what was found.
Evaporator Coil Cleaning in Alexandria
Evaporator coil cleaning in Alexandria is the single highest-value service we offer for older homes. The coil is the part that absorbs heat from your indoor air, and when it’s coated with dust and grime, your system loses efficiency and your house feels warmer than the thermostat says. Most Alexandria evaporator coil cleanings run $150 – $300 depending on access. In many pre-war homes, the coil sits inside a cramped air handler in a closet or attic, which adds labor time. We price the job before we start, not after we see it.
The Process, Step by Step
We isolate the air handler, brush the coil fins with a soft-bristle tool, and apply a self-rinsing coil treatment that’s safe for aluminum and copper. Then we HEPA-vacuum the housing and check the drain pan. If the coil is heavily impacted, we may need a second pass. You’ll get photos of the coil before and after.
Why Alexandria Coils Get Dirty Faster
Old duct chases leak. They pull air from crawlspaces and attics before it ever reaches the filter. That means the coil in a Rosemont foursquare is filtering air the filter never saw. If your home has original plaster walls and uninsulated ducts, the coil is catching decades of that dust. This isn’t a generic maintenance item, it’s the main reason your AC runs all day and struggles to hit 72 degrees in August.
Trusted Brands We Service in Alexandria
We service and clean every major HVAC brand you’ll find in Alexandria homes, from Carrier and Trane to Goodman, Rheem, and Lennox. We also work on older Rotobrush and off-brand systems that other companies won’t touch. Our techs carry Abatement Technologies containment units on larger jobs and stock common filters and replacement parts locally, which means less waiting when your Alexandria home needs a part mid-repair. If you run an Aprilaire media filter or a Guardsman UV system, we can clean and service those as part of a full HVAC cleaning. One call covers the whole system.
Common HVAC Cleaning Problems We See in Alexandria Homes
- Pre-war duct chases filled with plaster dust. Old Town and Del Ray homes with original plaster walls shed fine dust for decades. That dust ends up in supply ducts and return trunks, and a simple vent wipe won’t touch it. You need source removal with negative pressure.
- Humid crawlspace return trunks breeding mold. Alexandria’s proximity to the Potomac means damp crawlspaces under historic foundations. Return ducts running through those spaces pull in moisture and organic debris, which creates the musty smell you notice when the blower kicks on.
- Undersized return ducts starving modern air handlers. A 1950s air handler retrofit into a 1920s gravity-furnace chase often can’t pull enough air. The blower works harder, stays dirty longer, and distributes debris unevenly. Cleaning helps, but you should know the root cause.
- Lint and hair accumulation in blower motors. We regularly open blower housings in Alexandria and find the motor caked with lint from decades of recirculated air. In one Del Ray bungalow, the blower motor was so clogged with lint and plaster dust that the system had been recirculating debris from a neglected return trunk for years.
Pricing for HVAC Cleaning in Alexandria, VA
Here’s what you can expect to pay in Alexandria. A full HVAC Cleaning on a standard single-family home runs $380 – $640. AC cleaning alone runs $180 – $340. Evaporator coil cleaning runs $150 – $300. Blower cleaning typically adds $80 – $150. Condenser cleaning (the outdoor unit) runs $90 – $180. Air handler cleaning runs $120 – $220. Heat exchanger cleaning, where accessible, runs $100 – $200. Coil treatment runs $40 – $90. Every job includes a written price before work starts, and that price does not change at the door. No per-vent pricing, no surprise line items. Call (737) 727-2314 for a free estimate, and we’ll walk you through exactly what your system needs and what it costs.
We Also Serve Cities Near Alexandria
While this page focuses on HVAC Cleaning in Alexandria, our teams regularly work in nearby Arlington, Leesburg, Richmond, and Virginia Beach. If you’re on the edge of Alexandria or just across the county line, call us. We’ll tell you straight whether we can get to you this week.
Serving Alexandria, VA - Our Local Coverage Area
We’re based in the Alexandria area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About HVAC Cleaning in Alexandria
Every 3 – 5 years for most Alexandria homes. If you have pets, live in a pre-1940 house with original ducts, or run your AC heavily from May through September, lean toward every 2 – 3 years. If you just moved into an older Alexandria home and don’t know the system’s history, get it inspected and cleaned once, then set a schedule from what we find. Call (737) 727-2314 and we’ll help you figure out if you’re due.
Flat. Always flat. We quote one price per system before work starts, and it does not change. Per-vent pricing is misleading in Alexandria because so many homes have hidden return trunks and unregistered runs under floorboards. The vent count is meaningless when most of the debris sits where you can’t see it. One flat price per system, agreed in writing before we touch a duct.
For a typical Del Ray bungalow, it means inspecting the return ducts that often run through a damp crawlspace, setting negative pressure with HEPA filtration at the main trunk, using agitation tools on supply and return ducts, cleaning the evaporator coil and blower motor, and photographing the before-and-after inside your own ducts. We don’t promise same-day service because doing it right takes time. Call (737) 727-2314 and we’ll schedule a window that works for you.
Usually yes, but only if the source is in the ducts or air handler. In Alexandria, that source is often a damp crawlspace return trunk or a clogged evaporator coil holding moisture and debris. We’ll find it, clean it, and photograph it. If the smell returns after cleaning, the 365-Day Done Right Promise means we come back and make it right at no charge.
We do. Our technicians work on Rotobrush systems and a wide range of older and off-brand equipment found in Alexandria homes. We don’t require you to have a specific brand or a recent installation. If you have a system that’s been cleaned by a Rotobrush machine before or an air handler that predates modern labels, we can service it. Call (737) 727-2314 and describe what you’ve got, we’ll tell you what’s possible.
Why an Honest Duct Cleaning in Alexandria Is a Different Job
Alexandria’s historic districts, Old Town, Del Ray, and Rosemont, contain hundreds of pre-1940 homes with original plaster walls and duct chases never designed for today’s central air. The supply and return ducts in these houses are often undersized, uninsulated, and routed through unconditioned crawlspaces or attics. That makes system-wide cleaning a fundamentally different job than in modern tract housing. A neighboring city like Arlington has more postwar and mid-century stock where ducts are shorter, accessible, and standardized. In Alexandria, you need technicians who know how to work around plaster walls, hidden return trunks, and gravity-furnace conversions. You need someone who will actually inspect the system, not just wave a brush at visible registers.
We set negative pressure with HEPA filtration at the main trunk so loosened debris goes straight into the vacuum, not back into your living room. We use agitation tools on the supply and return ducts. We clean the evaporator coil and blower motor. And we photograph the before-and-after inside your own ducts so you can see what came out. One flat price per system, agreed before we start. No per-vent pricing. No same-day promises we can’t keep. Just a real cleaning with real documentation. That’s the job. Call (737) 727-2314 for a free estimate.
Written by Omar Haddad, Owner at Cardinal Air Duct Cleaning, serving Alexandria, VA.