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.
Nikro Duct Repair & Sealing in Ashburn: What to Know First
We provide independent Nikro duct repair and sealing in Ashburn, with most residential jobs completed in a single scheduled visit and a written price delivered before any work begins. Our crews carry Nikro-compatible parts and sealants, and every repair is photographed before and after as part of the standard job record. This page is for Nikro equipment owners in Ashburn who need duct sealing, flex duct repair, metal duct repair, or air leak repair and want to know what the work actually involves, what it costs, and how to verify it was done right. Call (240) 771-1508 for a free written estimate.
How Nikro Products Fail - and How We Fix Them
- Nikro PS1000 and PS2000 portable air scrubber duct connections: The flexible inlet/outlet collars on these units harden after three to five years in Ashburn’s humidity-swing climate, cracking at the clamp points and pulling negative-pressure leaks that reduce capture efficiency. We replace with reinforced silicone flex rated for continuous negative-pressure duty, not the standard vinyl aftermarket kit, and re-clamp with stainless worm-gear bands at 15-inch intervals.
- Nikro HP20 and HP20G gas-powered heater ducting runs: The high-temp flex duct between the heater barrel and the distribution plenum degrades from the inside out when Ashburn homeowners run extended drying cycles after water damage. The inner liner delaminates, creating hot spots that melt through the wire helix. We sleeve with fiberglass-reinforced mastic-coated flex rated to 500°F, then pressure-test at operating temperature before sign-off.
- Nikro SL2000 and SL4000 slurry vacuum extraction hoses: Not a duct failure in the traditional sense, but these units get repurposed in Ashburn basements for perimeter drainage sump connections. The corrugated hose fatigues at the barbed fitting, pulling micro-leaks that let radon-laden soil gas bypass the mitigation fan. We cut back to sound hose, install a proper mechanical coupling, and seal with two-part epoxy putty rated for below-grade pressure boundaries.
- Nikro 862483 and 862484 replacement blower motor housings: The sheet-metal seam on these aftermarket housings opens under thermal cycling in unconditioned Ashburn attics, leaking conditioned air into the insulation layer. We seam-seal with fiber-reinforced water-based mastic, then wrap the housing with foil-faced insulation to reduce delta-T stress. This is warranty-safe work; we do not modify the motor itself.
- Nikro duct-mounted UV-C sanitizer sleeves: The 2-inch diameter access ports installed for these units in newer Ashburn construction often get sealed with temporary tape during rough-in, then forgotten. The tape dries to a brittle shell that leaks supply air into wall cavities. We remove the residue, ream the port to clean metal, and install a permanent gasketed plug with mastic backup. The UV sleeve itself is untouched unless the customer requests replacement.
Our Nikro Duct Repair & Sealing Process

- 1
Photo-first inspection. We photograph every accessible duct run, plenum, and connection point before touching anything. Tomas Reyes started this practice after years of disputed jobs in Queens walk-ups; in Ashburn, it means no argument about whether a seam was already open.
- 2
Written scope and price. Haven Standard Clause 1: the customer receives a written price for the exact work described, with line items for parts, labor, and testing. No per-vent arithmetic, no “call for a quote.”
- 3
Parts decision with documentation. We stock Nikro-compatible OEM and quality aftermarket parts. If an aftermarket part saves money without shortening service life, we note the source and warranty implication in writing. The customer decides before we open the truck.
- 4
Repair and seal with pressure verification. Every sealed joint gets a smoke-pencil check or digital manometer reading, depending on system pressure class. Mastic cure time is observed; we do not pressurize before the manufacturer-specified set.
- 5
After-photos and job record delivery. The documented photo record, before and after, is delivered as a standard deliverable, not an upsell. The 365-Day Done Right Promise is printed on the same page as the final price.
- 6
Cleanup and sign-off. We leave the work area photographed, with no filter left unseated and no access panel left unsecured. The customer signs once, keeps the original, and we retain a copy under Haven Standard record retention.
Before
AfterWhat Nikro Duct Repair & Sealing Costs in Ashburn
| Scenario | Typical Range |
|---|---|
| Single flex duct run repair/replacement (Nikro-compatible) | $340 - $580 |
| Metal duct seam sealing with mastic, per plenum | $280 - $420 |
| Nikro air scrubber collar replacement and pressure test | $220 - $380 |
| Multi-run sealing with full-system pressure verification | $680 - $1,150 |
| HP-series high-temp flex replacement with thermal test | $450 - $720 |
What moves the price: accessibility (crawl space vs. finished basement), material type (standard flex vs. high-temp rated), and whether the system needs full negative-pressure verification or spot-check only. Ashburn townhomes near Loudoun Station often have stacked duct chases with limited access panels, which adds labor but not parts cost. Every estimate is free, written, and delivered before work starts. Call (240) 771-1508 to schedule.
Why Ashburn Homeowners Call CleanRun Air Duct Cleaning Ashburn for Nikro Work

We are an independent Nikro service provider, not a factory-authorized dealer, which means we work on the equipment the homeowner already owns without pushing replacement units. The 365-Day Done Right Promise applies to every repair, backed in writing, not subject to manager discretion. Our technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews, and they arrive with Nikro-compatible parts plus crossover knowledge of Lennox, Trane, and Carrier duct systems common in Ashburn’s mixed-age housing stock. Since 2013, we have served 52,000+ homes with a written price before every job and a documented photo record after. Tomas Reyes and his crew have logged hundreds of jobs in Ashburn, including properties where new construction debris still circulates in ductwork five years after the build date. We’ll show you the before photo first - then we can talk about what happens next.
FAQs
No. We do not modify sealed electrical components or gas-fired heat exchangers; our work is confined to duct connections, seams, and accessible fittings. For Nikro air scrubbers and portable units, warranty coverage on the motor and electronics remains intact because we do not open factory-sealed housings. If a repair touches a component that could affect warranty status, we note it in writing before starting work.
Replace when the flex duct inner liner is delaminated more than 30 percent of the run length, or when metal duct corrosion has reduced wall thickness below 26 gauge. Repair when damage is localized to collars, seams, or connection points. We photograph the full run and mark the decision threshold on the image so the customer sees what we see. Call (240) 771-1508 for a free written assessment.
We stock both. Nikro OEM collars and flex sections are available through our supplier with typical two-day lead time for non-stock items. Quality aftermarket parts from Abatement Technologies and Guardsman meet the same pressure and temperature specs at lower cost; we source these for non-warranty repairs when the customer prefers. The origin of every part is itemized on the written invoice.
Single-run repairs are usually completed in two to four hours. Multi-system sealing with full pressure verification takes a full scheduled day. We do not quote dispatch speed or same-day pressure; duct repair is scheduled work that requires cure time and verification, and we do not rush either step.
The standard deliverable includes: the written price and scope signed before work began, before-and-after photos of every duct run touched, the pressure test or smoke-pencil verification record, and the 365-Day Done Right Promise with our license number and contact information. This is the same documentation we have delivered on every job since 2013.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning Ashburn at CleanRun Air Duct Cleaning Ashburn, serving Ashburn and nearby areas.




Before
After
Before
After