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.
Guardsman Air Duct Cleaning in Ashburn: What to Know First
CleanRun provides independent Guardsman air duct cleaning in Ashburn for residential and light commercial systems, with most jobs completed in a single scheduled visit and a written price delivered before any panel comes off. A typical single-family home in Ashburn runs $380-$620 for full-system cleaning, depending on duct run count and whether the Guardsman unit has an integrated electronic air cleaner that requires separate handling. We are not affiliated with or authorized by Guardsman; we service their equipment as an independent provider with documented procedures and trade-recognized tools.
This page is for Guardsman owners in Ashburn who want to know what specific failure patterns show up in this equipment, what the work actually costs, and what documentation they’ll receive when the crew leaves. Call (240) 771-1508 for a written estimate.
How Guardsman Products Fail - and How We Fix Them
- Guardsman G-Series media air cleaners - The pleated media cabinet in the G-200 and G-300 lines tends to bow at the top track when homeowners install off-the-shelf 1-inch filters instead of the specified 4- or 5-inch media. The gap lets unfiltered air bypass the media and deposit debris directly on the downstream evaporator coil. We photograph the bypass gap, replace the track if it’s warped beyond tolerance, and install the correct depth media with a dated photo record of the seal.
- Guardsman UV-C germicidal units - The UV-100 and UV-200 series use a quartz sleeve that clouds with mineral scale from Ashburn’s moderately hard municipal water supply, especially in homes near the Loudoun Water service area. A cloudy sleeve drops UVC output below effective range without triggering any indicator light. We remove and inspect the sleeve during every full-system cleaning, replace it if light transmission is degraded, and note the reading in the job record.
- Guardsman EAC-5000 electronic air cleaners - The ionizing wires in this series collect a conductive film of cooking grease and construction dust that shorts the high-voltage power supply. The symptom is a continuous “power” light with no snap or ozone odor, which owners often miss for months. We clean the wire assembly with a non-residue solvent specified by the manufacturer, test ionization current with a microammeter, and document the before/after reading.
- Guardsman HEPA bypass units - The H-1000’s small-diameter bypass duct (6-inch round) plugs with lint and drywall fines in Ashburn’s newer townhome construction, particularly in the Loudoun Station and One Loudoun developments where we’ve found construction debris still present five years after build. The restriction triggers the main blower to work against a partial blockage. We scope the bypass duct with a borescope, remove the obstruction with a negative-pressure extraction tool, and photograph the clear path.
- Guardsman humidifier pad assemblies - The HM-200 and HM-300 drum-style units use a foam pad that hardens with calcium in Ashburn’s 120-150 ppm hardness range. The hardened pad won’t wick water, so the humidistat calls for humidity that never arrives and the blower pushes dry air through debris-caked ductwork. We replace the pad, clean the reservoir with the manufacturer’s specified antimicrobial, and note pad hardness in the photo record so the owner has a baseline for next season.
Our Guardsman Air Duct Cleaning Process

- 1
System identification and written scope. We record the Guardsman model and serial numbers, note any integrated components (UV, EAC, humidifier), and deliver a written price before touching the system. Haven Standard Clause 1: no exceptions.
- 2
Borescope inspection and photo baseline. Every duct run, return air plenum (the large box that collects air before the blower), and branch register is photographed before cleaning begins. Tomas Reyes started this practice in 2013 because he’d rather argue from a picture than from a conversation.
- 3
Component-specific handling. Guardsman electronic air cleaners are de-energized and removed before duct agitation; UV sleeves are handled with lint-free gloves to prevent oil transfer that accelerates clouding. We use OEM-specified media or quality equivalents from Honeywell and Aprilaire, never hardware-store substitutions that void the track geometry.
- 4
Negative-pressure extraction with Rotobrush or Nikro equipment. The main trunk and each branch are cleaned under controlled vacuum, with brush selection matched to duct gauge. We verify airflow at each register with a calibrated anemometer.
- 5
Component reassembly and function test. EAC ionization current, UV sleeve transmission, humidifier pad saturation, and system static pressure are checked against manufacturer baselines. All readings go in the job record.
- 6
Documented Photo Record delivery and 365-Day Done Right Promise. Before/after photos of every run, the written scope, and the test readings are compiled and delivered. If anything is not right, we make it right - backed in writing, not subject to manager approval.
Before
AfterWhat Guardsman Air Duct Cleaning Costs in Ashburn
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Full system cleaning, single-family home (up to 12 duct runs) | $380-$620 | Duct run count, accessibility, presence of integrated EAC/UV/humidifier |
| Return air plenum cleaning with access panel fabrication | $180-$290 | Plenum material (galvanized vs. fiberboard), location in attic or crawl |
| Guardsman EAC-5000 deep cleaning and wire restoration | $240-$350 | Degree of conductive fouling, power supply test results |
| UV-C sleeve replacement (UV-100/200 series) | $160-$220 | Sleeve only vs. sleeve plus lamp if hours are exceeded |
| Humidifier pad replacement and reservoir service (HM-200/300) | $140-$195 | Pad type, reservoir condition, drain line clearance |
| Video inspection and documented photo record only | $125-$175 | Number of access points, system complexity |
These are whole-system prices, not per-vent teaser rates. The price we write is the price you pay. Free estimates are available at your home or from a competitor’s written quote under our Free Second Opinion policy. Call (240) 771-1508.
Why Ashburn Homeowners Call CleanRun Air Duct Cleaning Ashburn for Guardsman Work

We’ve logged hundreds of jobs in Ashburn, including properties near Loudoun Station where construction-phase debris lingers in ductwork longer than owners expect. Our crew knows the difference between a Guardsman G-Series media cabinet and a Honeywell F100 - the mounting geometry differs by a half-inch that matters when you’re fabricating a transition. We also service Lennox, Trane, and Carrier systems, so when a home has mixed-brand components (common in Ashburn’s resale market), we don’t guess at compatibility.
Every technician is background-checked and uniformed under Haven Standard Clause 3: Verified Crews. The 365-Day Done Right Promise applies to every job, and the Documented Photo Record is included as standard, not sold as an upgrade. Tomas Reyes still photographs every return air plenum before touching a screw - not as a sales move, but because the picture is the beginning of the conversation.
FAQs
No. Routine maintenance and cleaning do not void the Guardsman equipment warranty, provided the work is performed without altering factory wiring or cabinet integrity. We document our procedures and use manufacturer-specified handling for electronic components so there’s a record if questions arise. If your system is still under warranty, we note the service in our record and yours. Call (240) 771-1508 if you need a copy for warranty filing.
We stock common Guardsman consumables - media, UV sleeves, humidifier pads - and source OEM or direct-equivalent parts from Honeywell, Aprilaire, and Abatement Technologies when Guardsman-branded stock has extended lead times. For electronic components, we use OEM-specified replacements to maintain calibration. We tell you which part we’re installing and why before the work starts, and we note the manufacturer in the written scope.
Replacement is worth considering when the cabinet is rusted through at the seams, the blower motor has been rewound more than once, or repair parts are obsolete. For most Guardsman units under 15 years, cleaning and targeted component restoration restore performance at a fraction of replacement cost. We scope the system, show you the photo record, and write both options with prices if both are viable. Call (240) 771-1508 for an assessment.
The $79-$149 offers typically cover a shop-vac at the register and a visual from the hallway. They do not include negative-pressure extraction of the full duct run, borescope inspection, or handling of integrated components like a Guardsman EAC or UV unit. Our price covers the complete job, documented, with a written guarantee. Bring a competitor’s written estimate and we’ll put our number next to it - Free Second Opinion, no cost.
Every three to five years for typical residential occupancy, sooner if you’ve completed renovation, have pets that shed heavily, or live near active construction. Ashburn’s pollen load in spring and the fine dust from Dulles corridor development both accelerate buildup in return ducts. We date-stamp our photo records so you have a baseline for deciding next time. Call (240) 771-1508 when you’re ready to check current condition.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning Ashburn at CleanRun Air Duct Cleaning Ashburn, serving Ashburn and nearby areas.




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