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 Coil Cleaning: The Fairfax Owner’s Guide
We stock and install Abatement Technologies-compatible coil cleaning assemblies in Fairfax, with most residential jobs running $340-$580 installed depending on system size and access. Same-day service is available when the part is on our truck, which it usually is for the common CAP600 and HEPA-AIRE series units we see throughout Fairfax County. Most owners discover the problem when their air handler starts blowing warm during July humidity spikes, or when they notice a musty, recycled smell that doesn’t clear even after changing the filter.
Which Abatement Technologies Models This Applies To
We regularly service three Abatement Technologies product lines in Fairfax homes: the HEPA-AIRE portable air scrubbers (models PAS600, PAS1200, and the older PAS2400 series), the CAP600-CAP1200 ceiling-mounted air purifiers found in many post-2017 townhomes near the Mosaic District, and the Predator 750 portable units common in renovation and remediation jobs. The coil assembly part number is stamped on a metal tag at the housing seam, usually reading C600, C1200, or a variant with an -R suffix denoting a factory reconditioned replacement. Width matters more than model name: the CAP600 takes a 16-inch coil frame, while the PAS1200 and CAP1200 share a 20-inch frame that won’t seat properly in the smaller housing even if the connection points look close. We carry both OEM Abatement Technologies coils and quality aftermarket equivalents from BBJ Environmental that meet the same 1,200 CFM static pressure rating. For units still under original warranty, OEM preserves coverage; for units past year five, the aftermarket option saves roughly $90 and carries the same 365-Day Done Right Promise from our end.
Signs Your Abatement Technologies Coil Cleaning Is Failing

- Reduced airflow at registers. The coil fins collect a bonded layer of dust and biological growth that negative-pressure extraction can’t pull through; in Fairfax’s pollen-heavy springs, we’ve measured airflow drops of 40% before owners notice the temperature problem.
- Ice formation on the coil housing. Restricted airflow causes the refrigerant line temperature to drop below dew point, frosting the exterior; this is often mistaken for a refrigerant leak when it’s actually a maintenance issue.
- Persistent musty odor after filter changes. The coil’s drain pan and fin matrix harbor mold that standard filter swaps don’t reach; the smell recirculates because the coil sits downstream of the filter in Abatement Technologies’ design.
- Unit runs continuously without reaching setpoint. The system compensates for reduced heat exchange efficiency by extending cycle times, which drives up electric bills before the owner connects the dots.
- Water staining on ceiling tiles (ceiling-mounted units). A clogged condensate drain combined with a dirty coil overflows the pan; we’ve found this in three Fairfax office conversions near Route 50 where the CAP600 was installed without adequate access panels.
Before
AfterReplacement Cost & What’s Included
| Component | Fairfax Price Range |
|---|---|
| OEM Abatement Technologies coil assembly (16″) | $240-$290 |
| OEM Abatement Technologies coil assembly (20″) | $280-$340 |
| Aftermarket equivalent (BBJ Environmental) | $170-$220 |
| Labor: removal, cleaning of housing, installation | $120-$180 |
| Condensate drain flush and pan treatment | included |
| Documented Photo Record (before/after) | included |
Total installed cost for a standard residential Abatement Technologies coil cleaning replacement in Fairfax runs $340-$580. The range depends on three factors: whether the unit is ceiling-mounted (ladder work, access panel removal), whether the coil has fused to the frame from deferred maintenance, and whether the condensate pump needs clearing. We deliver a written price before any work starts, Haven Standard Clause 1, and every job includes the Documented Photo Record showing the coil condition before we touch it and the installed assembly after. The 365-Day Done Right Promise covers the workmanship; OEM parts carry manufacturer warranty, aftermarket parts carry our equivalent.
DIY or Call Us?

An owner can safely check three things: confirm the model tag, verify the breaker is off, and inspect the filter condition. Beyond that, Abatement Technologies coil housings use tension-clips that release unexpectedly if the frame is corroded, and the refrigerant lines run inches from the coil face on CAP-series units. We don’t recommend DIY removal. The camera goes in first. Then we talk. If you want to verify the problem yourself, we’ll email you a photo from our last similar job in Fairfax so you know what you’re looking at. When you’re ready for a written price, call (571) 526-0015.
FAQs
In Fairfax’s mixed-humidity climate, expect 6-10 years with annual filter changes and 3-5 years if the unit runs in construction or renovation environments where drywall dust loads the coil. The 52,000+ homes we’ve documented since 2013 show that coils in homes near tree-lined streets (think the older neighborhoods off Chain Bridge Road) degrade faster from pollen and leaf mold than units in more open settings. Call (571) 526-0015 for an exact quote on replacement - estimates are free.
Light surface debris responds to foaming cleaner and low-pressure rinse, but fin corrosion or biological infiltration into the coil matrix means replacement. We photograph the coil before quoting; if cleaning is viable, we’ll say so and price it at $180-$260. If the fins are flaking or the copper tubing shows green oxidation, replacement is the honest recommendation. Call (571) 526-0015 for an exact quote - estimates are free.
Most Abatement Technologies coil replacements take 90-150 minutes from arrival to photo record delivery. Ceiling-mounted CAP units in tight attic spaces add 30-45 minutes for safe ladder positioning and access panel work. We don’t rush the housing cleaning or the drain flush; those steps determine whether the new coil lasts six years or ten. Call (571) 526-0015 to schedule.
We carry the 16-inch and 20-inch assemblies for HEPA-AIRE and CAP series on every Fairfax truck, along with Lennox, Trane, and Carrier equivalents for mixed-system calls. Less common Predator 750 coils we pull from our Springfield warehouse same-day. If your model tag reads something else, text us a photo and we’ll confirm stock before dispatching. Call (571) 526-0015.
CleanRun Air Duct Cleaning Fairfax is an independent service provider, not affiliated with Abatement Technologies. We service all brands under the H.A.V.E.N. Standard, with license number published on every written estimate and background-checked, uniformed technicians identified by name before arrival. Tomas Reyes built this crew on the principle that a customer should see what we saw before paying for what we did.
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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