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.
Before
After
Before
After
Before
AfterLennox Air Duct Cleaning in Fairfax, VA | CleanRun Air Duct Cleaning Fairfax
We provide our Air Duct Cleaning in Fairfax as an independent Lennox repair service across Virginia, with written pricing before any work begins and a documented photo record of every duct run. Our crews have worked on Lennox systems in the area’s postwar housing stock for over a decade, and the one thing that makes our Fairfax work different is how we handle the return-air chases and flex duct layouts specific to split-level homes near Braddock Road and Route 236. Call (571) 526-0015 for a free written estimate.
Why Fairfax Residents Choose Us for Lennox Service
We are not a Lennox dealer. We are an independent Fairfax-based duct cleaning company that has worked on Lennox air handlers, coils, and flex duct retrofits in this county’s 1950s-through-1980s housing stock since 2013. That independence matters because our recommendations are driven by what the inspection camera shows, not by a manufacturer’s quarterly sales targets.
Tomas Reyes, our owner, grew up in Queens helping his uncle maintain aging apartment-building HVAC systems in Flushing. He trained at Queensborough Community College before building the crew we run today. In Fairfax, that background shows up in how we approach older split-levels near the Mosaic District, where settled dust and fiberglass liner deterioration appear on almost every inspection camera run. The camera goes in first. Then we talk.
Our Lennox sales & service covers everything from Merit Series units in ranches off Lee Highway to Dave Lennox Signature Collection systems in colonials near Burke. We stock OEM-spec and equivalent-quality aftermarket parts for common repairs, and our technicians carry Rotobrush, Nikro, and Abatement Technologies equipment on every truck. Haven Standard Clause 1 means you get a written price before a single panel comes off. Haven Standard Clause 3, Verified Crews, means background-checked, uniformed technicians identified by name before arrival.
Common Lennox Air Duct Cleaning Problems We Solve in Fairfax
- Flex duct deterioration in unconditioned attics. Fairfax’s ranch and split-level stock from the 1960s and 1970s often has original flex duct snaking through attics that hit 140°F in July and drop below freezing in January. The insulation wrap cracks, the wire helix corrodes, and the duct disconnects at the plenum connection. We find pressure imbalances that pull attic dust and fiberglass directly into the supply stream. Our crew photographs the damage, repairs or replaces the run, and seals with mastic rated for the temperature swing.
- Microbial growth on Lennox evaporator coils. Northern Virginia’s humid subtropical summers push dew points above 70°F for weeks at a stretch. Lennox coils in Fairfax homes run wet for months, and the microbial film that develops sheds into supply ducts every time the compressor cycles. We clean the coil with foaming agents and HEPA-contained negative-pressure extraction, then document the before and after.
- Blower wheel loading in older Lennox air handlers. PSC motors in Merit and early Elite systems don’t move enough air to self-clean. In Fairfax, where oak pollen season coats everything outdoors from April through June, that pollen plus decades of drywall dust cakes the blower wheel. Airflow drops. Run times stretch. Condensation builds in supply ducts. We remove and clean the wheel, or replace it with an OEM-spec equivalent if the balance is compromised.
- Return-air chase contamination in split-levels. In neighborhoods off Braddock Road and Route 236, return-air chases were often framed directly into wall or floor cavities instead of using dedicated sheet-metal ductwork. The register looks clean. The cavity behind it holds decades of drywall dust, insulation fibers, and pest debris. Standard vacuuming can’t reach it. We use specialized access tools and negative-pressure extraction to pull it out, then seal with fire-rated mastic where code requires.
- Disconnected flex duct at plenum connections. The temperature cycling in Fairfax’s unconditioned attics loosens strap hangers and degrades zip-tie and tape connections. We find Lennox systems where 20% of conditioned air is dumping into the attic. Our inspection camera locates the gap, we reconnect with mechanical fasteners and seal with mastic, and the photo record shows the fix.
BeforeAfterLennox Service in Fairfax: What Local Conditions Mean for Your Equipment
Fairfax’s post-WWII suburban boom produced thousands of ranch, split-level, and colonial-style tract homes built between roughly 1955 and 1985, many still running their original or first-generation duct systems through unconditioned attic spaces. Northern Virginia’s spring pollen season - consistently among the worst in the mid-Atlantic, driven by the region’s heavy oak and mixed-hardwood canopy - loads these aging systems with allergens that then sit in humid ductwork through brutal mid-Atlantic summers, creating a compounding contamination cycle that is more acute here than in denser, newer-construction jurisdictions like Arlington or Reston.
For Lennox owners specifically, this means two things. First, the evaporator coil in your Elite or Signature Series unit is working harder and longer than the same model in drier climates, so coil cleaning is not optional maintenance - it is load management. Second, the return-air chases in split-levels near Braddock Road were never designed to be cleaned, because they were never supposed to be ducts. They were framed as wall cavities and pressed into service. Lennox air handlers connected to these chases pull from a reservoir of contamination that regenerates every season. We have extracted everything from carpenter ant frass to deteriorated cellulose insulation that had settled into a three-inch mat at the first elbow. The homeowner sees it because we photograph it. Then we talk about what sealing and repair will actually fix.
In a 1968 split-level off Braddock Road, we cleaned a Lennox Elite system where the return-air chase was framed into the floor cavity and had never been properly sealed during any prior Dryer Vent Cleaning - Fairfax or duct service. Our tech extracted several pounds of drywall dust and old insulation fibers, then repaired a disconnected flex duct in the attic and sealed the chase with mastic. The homeowner noticed immediate airflow improvement and the musty odor at the registers disappeared.
Lennox Models & Products We Service in Fairfax
Our Fairfax service area covers the full Lennox residential lineup. We regularly clean and repair:
- Merit Series: 14ACX, ML14XC1 - common in entry-level Fairfax ranches and townhomes from the 2000s. Straightforward coil-and-blower access, but flex duct retrofits often need attention.
- Elite Series: EL16XC1, EL296V - two-stage and variable-speed units popular in 1990s and 2000s colonials. The variable-speed blower is sensitive to wheel loading; cleaning restores the modulation range.
- Dave Lennox Signature Collection: SL280V, XC21 - premium installations in custom homes near Oakton and Fairfax Station. We use OEM-spec filters and coil treatments to protect the extended warranties still active on many of these units.
- CompleteHeat HM30: Older hybrid systems still running in some Fairfax homes from the 1980s and 1990s. Duct layouts are often original, and we assess whether cleaning and sealing can extend service life or if the heat exchanger condition warrants replacement.
We carry OEM-spec and equivalent-quality aftermarket parts for all four lines. Our trucks stock common Lennox coil treatments, blower wheels, and flex duct repair kits so Fairfax jobs don’t wait on shipping.
Lennox Service Pricing in Fairfax
Whole-system air duct cleaning for a Lennox unit in Fairfax typically runs $450-$850 for a single-family home, depending on the number of duct runs, accessibility, and whether return-air chase cleaning or flex duct repair is needed. Evaporator coil cleaning adds $180-$320. Flex duct repair or replacement is quoted by the linear foot after inspection.
Every estimate is free and includes a full inspection-camera walkthrough of your duct system. Haven Standard Clause 1: the written price is delivered before any work starts. No per-vent pricing. No $79 coupon that balloons to $800 once the truck is in your driveway. The price we write is the price you pay, and it includes the documented photo record of every run, before and after.
Call (571) 526-0015 for your written estimate. We answer live, 24/7.
Serving Fairfax, VA - Our Local Coverage Area
We’re based in the Fairfax 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 - Lennox Air Duct Cleaning in Fairfax
Every three to five years for most Fairfax homes, but every two to three if you are in an older split-level near Braddock Road or Route 236 with original ductwork. The combination of oak pollen loading and humid summers accelerates buildup in these systems compared to newer construction. Call (571) 526-0015 and we will camera-inspect your ductwork at no charge to give you a specific interval.
The return-air chase is likely framed into a wall or floor cavity rather than built from sheet metal, so standard vacuuming only cleans the register and the first few feet. Decades of drywall dust, insulation fibers, and pest debris sit in the cavity beyond reach. We use specialized access tools and negative-pressure extraction to pull it out, then seal with mastic. The musty odor typically resolves once the cavity is actually empty, not just surface-cleaned.
Yes. A loaded coil restricts airflow, which extends run times and increases static pressure across the duct system. That higher pressure forces more air through any leaks in the return side, pulling attic or crawl-space debris into the stream. Cleaning the coil restores design airflow and reduces the suction that draws contamination in. We include coil inspection in every whole-system estimate.
Disconnected runs at the plenum, crushed or sagging sections from failed strap hangers, and insulation wrap that has degraded to the point where the inner liner is exposed. All three are common in Fairfax’s temperature-cycling attics. The symptom is usually uneven heating or cooling between rooms, or a sudden spike in utility bills. Our inspection camera finds the exact location without tearing into drywall.
We use OEM-spec or equivalent-quality aftermarket parts, and we source from distributors who cross-reference Lennox part numbers. We do not use universal-fit components that compromise system balance. For coil treatments, we use manufacturer-compatible products from Honeywell and Aprilaire. Every part is documented on your job record.
Service Areas Near Fairfax
Our crews work throughout Fairfax County and the surrounding corridor. We run regular Lennox service in Reston, where newer construction presents different duct layout challenges than Fairfax’s postwar stock. We also cover Lennox service in Centreville, Herndon, Arlington, and Alexandria. Each jurisdiction has its own building era and code history, and we adjust our access and sealing approach accordingly.
Book Your Lennox Service in Fairfax Today
Call (571) 526-0015 to schedule your free inspection and written estimate. A live person answers around the clock. We will camera-inspect your Lennox duct system, show you what we find, and deliver a single flat price before any work begins. Every job is backed by our 365-Day Done Right Promise and includes a complete documented photo record of every duct run.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Fairfax, serving Fairfax since 2013.