Air Duct Cleaning in Alexandria - One Flat Price, Before-and-After Photos

Air Duct Cleaning in Alexandria, VA

Dryer vent cleaning in Alexandria usually costs $120-$260 and is done the same day the crew arrives. What makes Alexandria jobs different from the rest of the DC suburbs is the housing stock itself: Old Town’s 18th- and 19th-century brick rowhouses were never built for forced-air HVAC, and the retrofitted ductwork threaded through plaster walls and brick chases decades ago creates airflow problems modern homes simply don’t have. If your vents are blowing weak or your dryer takes two cycles to finish a load, call (806) 606-6902 for a written price before any work starts.

Call (806) 606-6902

Why Alexandria Homes Are Different

Alexandria sits directly on the Potomac River in one of the most humid corridors of the mid-Atlantic. Summer dew points regularly pass 70°F, and cooling systems running through poorly vapor-sealed ductwork in older homes face chronic condensation inside the duct runs. The wet winters don’t help: ducts here rarely get a dry-out period, so dust that collects inside register boots and at elbows becomes a damp, sticky film instead of blowing through. That’s a material fact, not a sales line, and it shapes what we find and what we do.

The housing stock compounds it. Old Town’s brick rowhouses, Del Ray’s 1920s-40s craftsman bungalows, and the West End’s 1960s-70s garden apartments all share a common problem: ductwork was squeezed into spaces never designed for it. Old Town is the extreme case, where 1970s-era flex duct was often routed through original 18th-century brick flue chases. The duct is inaccessible for inspection, collapses under standard negative-pressure extraction rigs, and sometimes shares a chase with an active fireplace flue, meaning soot infiltration into the supply air shows up on our camera more often than anyone would expect.

Alexandria’s density of pre-1950 housing is unusually high for the DC suburbs. Non-standard duct geometry is the rule, not the exception. That means longer job times, specialized flexible equipment, and a crew that has seen the inside of enough Alexandria duct runs to know what a brick-chase retrofit looks like before the first panel comes off.

Our Main Alexandria Services

Most Alexandria homeowners call us first about their air ducts or their HVAC system, and we route those calls to dedicated teams with the specific equipment each job needs.

Air Duct Cleaning in Alexandria

Whole-system air duct cleaning in Alexandria typically runs $350-$700. The job involves negative-pressure extraction through every supply and return run, photographic documentation before and after each run, and a written report of what the camera found. Old Town jobs often take longer because of the tight bends and dead-end runs in retrofitted systems. We publish a full service breakdown on Air Duct Cleaning in Alexandria, including the photo record included on every visit and the 365-Day Done Right Promise in writing.

HVAC Cleaning in Alexandria

HVAC cleaning here means more than the ducts. We clean the blower motor, evaporator coil, drain pan, and the plenum, which in Alexandria’s humid climate are where mold and biofilm actually start. A clogged evaporator coil in a Del Ray bungalow pushes your cooling bill up and recirculates the same damp air. Full HVAC cleaning in Alexandria typically starts around $400 and goes up with system complexity. Details are on our HVAC Cleaning in Alexandria page.

Before

After

Dryer Vent Cleaning in Alexandria

Dryer vent cleaning in Alexandria costs $120-$260 and usually takes an hour to ninety minutes. The humid Potomac climate and the age of local housing both work against you here: a vent that collects lint in a dry climate stays dusty, but in Alexandria the same lint absorbs moisture from the air and becomes a dense, packed blockage that restricts airflow and raises the fire risk. Dryer Vent Cleaning service starts with a camera inspection so you see exactly what’s inside before we remove it.

Dryer Vent Inspection

Signs you need it

Your dryer takes two or more cycles to dry a normal load, or the laundry room feels humid while the machine runs.

What it costs in Alexandria

A standalone dryer vent camera inspection in Alexandria runs $75-$150, and the fee is waived when you book the cleaning in the same visit.

How we do it

We run a flexible camera down the full vent run from the dryer connection to the exterior termination, photograph every obstruction, and show you the images before quoting any work.

Written price before the camera goes in, no exceptions.

Vent Rerouting

Signs you need it

Your vent run is longer than 25 feet, has more than two elbows, terminates in a crawl space or attic instead of outside, or the existing flex duct is crushed behind the wall in an Old Town retrofit.

What it costs in Alexandria

Vent rerouting in Alexandria typically runs $180-$450 depending on the new path and the materials required to meet current code.

How we do it

We map the new route, replace flex with rigid duct where code requires it, seal every joint, and verify the new termination point with a final camera pass.

What Dryer Vent Cleaning Costs in Alexandria

Does my Old Town rowhouse actually need a different dryer vent setup?

Quite often, yes. Original 18th- and 19th-century brick walls weren’t built with dryer vent chases, so retrofits run flex duct through odd cavities that sag, kink, and collect lint at the bends. A camera inspection tells us immediately whether your current run is safe or should be rerouted.

Is dryer vent cleaning worth it if I haven’t noticed a problem?

Yes, particularly in Alexandria’s humid climate. Lint that would stay dry and loose in a drier region becomes damp and packed here, and a blocked vent forces your dryer to run longer while exhausting moisture into the wall cavity. Call (806) 606-6902 for a written price.

Duct Repair & Sealing in Alexandria

Duct repair and sealing in Alexandria addresses what the camera finds: cracked joints, collapsing flex, and leaking seams that push conditioned air into wall cavities instead of rooms. In humid riverside conditions, every leak also pulls damp crawl space or wall-cavity air into the supply stream, which is why sealing here is as much about air quality as it is about efficiency. Duct Repair & Sealing includes a before-and-after photo record of every repaired section.

Duct Sealing

Signs you need it

Rooms at the end of the run never reach the thermostat set point, or you feel air blowing from wall and floor seams near the registers.

What it costs in Alexandria

Whole-system duct sealing in Alexandria typically runs $400-$900 depending on the number of accessible runs and the extent of the leakage.

How we do it

We locate every leak with a pressure test, seal the seams with mastic or UL-listed tape at each joint, and photograph each repaired section for the written record.

Flex Duct Repair

Signs you need it

Your camera inspection shows sagging, kinked, or collapsed flex duct, often in Old Town chases where the material was routed through spaces never designed for it.

What it costs in Alexandria

Flex duct replacement in Alexandria typically runs $150-$350 per run depending on length, diameter, and how hard the run is to reach.

How we do it

We remove the damaged section, install properly supported replacement flex at the correct tension, and photograph the new run next to the removed piece.

What Duct Repair & Sealing Costs in Alexandria

Why do my ducts leak more in an old Alexandria rowhouse than in a newer build?

Retrofit ducts in pre-1950 homes are pieced together from short sections joined through irregular cavities, and every additional joint is another potential leak point. The original brick or plaster chase also moves with seasonal humidity, slowly working joints apart over time.

Is sealing ducts actually worth the cost in this climate?

Yes, because every leak draws humid Potomac air into the duct stream, and the AC then spends energy drying that air instead of cooling your rooms. Sealed ducts in Alexandria consistently show lower summer humidity inside the living space. Call (806) 606-6902 for a written price.

Air Quality & Sanitizing in Alexandria

Air quality and sanitizing in Alexandria starts with a camera inspection to identify what is actually inside your ducts, then applies the right treatment for what was found. The Potomac’s humidity means microbial growth inside duct runs is common here, not hypothetical, and a 1960s-era West End apartment with original fiberglass-lined sheet metal duct often has a problem that a quick spray will not fix. Air Quality & Sanitizing covers treatment, verification, and the after-record documentation.

Mold Treatment

Signs you need it

You see dark staining inside registers or at the plenum, or the system smells musty every time the fan cycles on.

What it costs in Alexandria

Mold treatment in Alexandria ductwork typically runs $350-$850 depending on the extent of the affected surface and whether the source is surface film or saturated insulation.

How we do it

We photograph the affected areas, apply an EPA-registered antimicrobial to the interior surfaces, replace any saturated insulation, and photograph the treated areas for the written record.

UV Light Installation

Signs you need it

Your evaporator coil repeatedly develops mold in Alexandria’s humid cooling season, even after cleaning, because condensation never fully dries.

What it costs in Alexandria

A UV light installation at the coil in Alexandria typically runs $400-$850 including the unit and wiring, depending on system access.

How we do it

We mount a UV-C lamp at the evaporator coil or plenum according to manufacturer specifications, wire it to the blower circuit, and verify operation with the measured output.

What Air Quality & Sanitizing Costs in Alexandria

Does Alexandria’s humidity actually cause mold inside ductwork?

Yes. Cooling coils produce condensation constantly during the long cooling season, and when the surrounding ductwork is poorly insulated or vapor-sealed, that moisture migrates into the duct lining. The camera will show it plainly. Call (806) 606-6902 for a written price.

Can you treat mold in ducts without replacing the whole system?

Usually, yes. Surface mold on metal or flex duct gets treated with an EPA-registered antimicrobial and the after-photos document the result. If the duct liner itself is saturated, we replace the affected section rather than painting over the problem.

Brands We Service in Alexandria

Our Alexandria crews carry parts and equipment from Rotobrush, Nikro, and Abatement Technologies, and we stock replacement components for the Honeywell, Aprilaire, and Guardsman systems we encounter across Old Town, Del Ray, and the West End. Our brands page lists what we carry and what we can source same-week.

Pricing for Air Duct Cleaning in Alexandria, VA

Neighborhoods We Serve in Alexandria

We cover all of Alexandria, including Old Town, Del Ray, the West End, Eisenhower Valley, and Potomac Yard. Old Town’s brick chases and historical rowhouse retrofit ducts are the most time-intensive jobs, while Del Ray bungalows and West End garden apartments hold their own quirks in the form of deteriorated fiberglass-lined sheet metal and undersized return runs.

• Old Town
• Del Ray
• West End
• Eisenhower Valley
• Potomac Yard

Service Area - Cities Near Alexandria

Our crews work throughout Alexandria and into the surrounding communities. For duct services in Arlington, MA or Annandale, VA, we schedule the same written-price model and send the same background-checked crews. We also cover Burke, VA and Oakton, VA for full air duct, dryer vent, and sanitizing services.

FAQs About Air Duct Cleaning in Alexandria