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.
Abatement Technologies Duct Sealing & Repair: The Fairfax Owner’s Guide
CleanRun stocks and installs Abatement Technologies-compatible duct sealing and repair components for Fairfax homes, with typical installed pricing between $340 and $780 depending on system reach and access conditions. Most sealing jobs using Abatement Technologies PREDATOR or CAP series equipment are completed in a single visit. We carry the full line of Abatement Technologies-compatible aerosol sealant canisters, injection wands, and flex-duct repair collars on our Fairfax trucks, so you’re not waiting on a parts run while your system stays offline.
Most Fairfax owners discover their duct sealing has failed when a room stops heating or cooling evenly, or when their energy bill jumps without explanation. The camera goes in first. Then we talk.
Which Abatement Technologies Models This Applies To
Abatement Technologies builds duct sealing and air handling equipment across three main series that show up in Fairfax homes: the PREDATOR portable air scrubbers (models 500, 600, and the newer 700-series), the CAP series central air purification systems (CAP600, CAP1200), and the HEPA-AIRE duct cleaning systems that use pressurized sealant injection for post-cleaning integrity work. The critical compatibility point is the sealant port diameter, PREDATOR units use a 1.5-inch quick-connect fitting while CAP series units require a 2-inch cam-lock adapter. We stock both.
To identify your exact model, check the data plate on the main housing, usually on the blower side or the top panel near the filter rack. The plate lists the model number, serial prefix, and maximum operating pressure. For duct sealing work, we need that pressure rating because Abatement Technologies specifies different sealant viscosities for systems rated above versus below 2.5 inches water column. Using standard-grade sealant on a high-pressure CAP1200 will fail within two seasons. We carry OEM Abatement Technologies sealant rated for each pressure class, plus a quality aftermarket equivalent from Nikro that meets the same ASTM E84 flame-smoke index for about 15 percent less.
Signs Your Abatement Technologies Duct Sealing & Repair Is Failing

- Uneven room temperatures. When sealant at trunk-line joints degrades, conditioned air escapes into your attic or crawl space before reaching the register. In Fairfax split-levels near the Mosaic District, we regularly see this at the transition between the main trunk and the upstairs branch, where thermal expansion over five to ten years cracks the original seal.
- Dust streaking around register boots. This means air is pulling through gaps behind the drywall, carrying attic insulation fibers or crawl-space grit into your living space. The camera usually shows a failed gasket or a sealant bead that has pulled away from the metal.
- Whistling or rushing noise from ducts. Abatement Technologies systems move serious air volume. When a seal fails, the pressure drop creates turbulence you can hear two rooms away. The sound localizes near the leak, which helps us target our inspection.
- Spiking energy bills with no thermostat change. A typical Fairfax home loses 20 to 30 percent of conditioned air through duct leakage before it hits the rooms. Your HVAC runs longer to compensate. We’ve photographed systems where the blower was essentially conditioning the attic.
- Musty or chemical odors when the system cycles. Failed seals in return ducts can pull air from musty crawl spaces or from areas where previous pest treatment left residual odor. Abatement Technologies HEPA filtration can’t fix what the ductwork is reintroducing upstream.
Before
AfterReplacement Cost & What’s Included
| Scope | Price Range | What’s Included |
|---|---|---|
| Single register boot reseal | $180 - $260 | Removal, surface prep, OEM-compatible sealant, pressure test, photo record |
| Branch line sealing (1-2 runs) | $340 - $520 | Access cut if needed, full sealant injection, post-repair flow verification, photo record |
| Main trunk repair with collar replacement | $580 - $780 | Collar removal, custom-fit replacement, sealant, pressure test, full photo documentation |
What drives the range is access, not markup. A trunk line in an unfinished basement takes half the time of the same repair in a Fairfax attic where August heat hits 140 degrees and we need to lay protective sheeting across blown insulation. Every price is written and agreed before work starts, Haven Standard Clause 1. The sealant work carries our standard 365-Day Done Right Promise, if it leaks, we come back and make it right at no charge.
DIY or Call Us?

There’s a safe middle ground here. A homeowner can remove a register, shine a flashlight into the boot, and look for obvious gaps where the metal meets drywall or where a flex duct has pulled free from its collar. If you see that, you’ve found the symptom. Fixing it is different.
Abatement Technologies-compatible sealants are two-part aerosol or injection compounds that cure under pressure. The application equipment runs 40 to 90 PSI depending on duct material, and overspray in a confined attic space is a genuine respiratory hazard without supplied-air protection. More critically, a bad seal job traps moisture in fiberglass-lined ducts, which is how you get mold six months later. We don’t recommend DIY for any sealant work beyond a loose register boot that hand-tightens back into place. For anything involving the trunk line, branch connections, or the Abatement Technologies unit itself, the cost of doing it wrong is a full duct replacement. Call (571) 526-0015 and we’ll put a written number next to it.
FAQs
Properly applied OEM sealant lasts 10 to 15 years in Fairfax’s climate, though homes near construction zones or with frequent HVAC cycling may see 7 to 10. The freeze-thaw cycles we get in January and February accelerate thermal expansion at metal joints, which is why we inspect seal integrity during any service call. Call (571) 526-0015 for an exact quote, estimates are free.
Small gaps at register boots can be patched with compatible sealant if the original bead is otherwise intact. Once the sealant has crystallized or separated from the duct metal, which we see after roughly 8 years in most Fairfax homes, partial patching fails within a season. We photograph the condition and show you before quoting either approach. Call (571) 526-0015 for an exact quote, estimates are free.
A single register boot reseal takes 45 minutes to an hour. Full branch-line sealing on a typical Fairfax 3-bedroom home runs 3 to 4 hours including setup, pressure testing, and photo documentation. We schedule a half-day block so the crew isn’t rushing the cure time. Call (571) 526-0015 for an exact quote, estimates are free.
Yes. We carry Abatement Technologies-compatible sealant canisters in both pressure ratings, injection wands, flex-duct repair collars, and gasket sets for all common port sizes. For obsolete Abatement Technologies models, we fabricate adapter fittings in our shop or source through our Lennox, Trane, and Carrier parts network. Call (571) 526-0015 for an exact quote, estimates are free.
CleanRun Air Duct Cleaning Fairfax is an independent service provider, not affiliated with Abatement Technologies. We service equipment from Abatement Technologies, Lennox, Trane, Carrier, and other major manufacturers using OEM-compatible or factory-specified replacement components.
Ready to stop losing conditioned air into your attic? Call CleanRun at (571) 526-0015. A live person answers, we’ll schedule a technician named and background-checked under Haven Standard Clause 3, and you’ll get a written price before any work starts. Every duct run photographed before and after, every job backed by the 365-Day Done Right Promise.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning Fairfax at CleanRun Air Duct Cleaning Fairfax, serving Fairfax and nearby areas.




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