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 HVAC Cleaning in Fairfax: What to Know First
We provide independent Guardsman HVAC cleaning in Fairfax for evaporator coils, blower assemblies, condensers, air handlers, and heat exchangers. A typical Guardsman system cleaning runs $340-$620 depending on which components need service, and we deliver a written price before any panel comes off. Most Guardsman jobs in Fairfax are completed in a single scheduled visit with full photo documentation included.
This page is for Fairfax homeowners who own a Guardsman HVAC product and need cleaning or maintenance performed by technicians who understand the brand’s specific construction. We are not affiliated with or authorized by Guardsman. We are an independent service provider. Call (571) 526-0015 for a written estimate.
How Guardsman Products Fail - and How We Fix Them
- Guardsman G-Series evaporator coils develop fin corrosion near the Fairfax humidity line. The coated aluminum fins on G-Series indoor coils hold up well in dry climates, but Fairfax’s summer dew points regularly push coil surfaces past the coating’s failure threshold. We see fin deterioration concentrated on the first two rows where condensate drains slowest. Our fix: full coil removal, non-acidic foaming clean with pressurized rinse, then fin combing to restore airflow geometry. We photograph the fin condition before quoting replacement versus cleaning.
- Guardsman ProAir blower motors collect debris at the squirrel-wheel hub. The ProAir line uses a forward-curved wheel with a recessed hub that traps pet hair and construction dust, especially in Fairfax’s 2015-2022 build wave where fiberglass liner fragments circulate. The imbalance shows up as vibration at 800-1,200 RPM. Our fix: complete blower assembly removal, hub disassembly, ultrasonic cleaning of the wheel, and dynamic balance check before reinstall. We document runout with a dial indicator, photo included.
- Guardsman Shield condenser coils clog at the louvered wraparound joint. Shield-series outdoor units position the coil seam at the prevailing wind angle for Northern Virginia pollen and cottonwood seed. The seam gap collects debris that standard hose washing misses. Our fix: partial coil disassembly at the seam, straight-stream flush from the inside out, then protective coating reapplication compatible with Guardsman’s factory finish. We show the seam debris on camera before touching it.
- Guardsman Sentinel heat exchangers show soot ring patterns at the third pass. The Sentinel’s clamshell design creates a low-velocity zone at the third bend where incomplete combustion deposits collect. In Fairfax’s older gas-heat neighborhoods near Daniels Run, we find this pattern on units with original 0.014″ orifices that drift lean over time. Our fix: heat exchanger camera inspection, targeted soot removal with soft-bristle rotary tools, combustion analysis after reassembly, and written pass/fail documentation. We do not clean and ignore; we photograph and report.
- Guardsman Core air handler cabinets sweat at the negative-pressure plenum seam. The Core line’s snap-together plenum design can separate slightly at the upper corner, drawing attic air and causing condensation staining on drywall returns. Fairfax’s attic temperatures in July and August accelerate the cycle. Our fix: pressure-test the plenum, reseat and seal the seam with foil-reinforced mastic, then clean the blower and coil as a matched system. The photo record shows the gap before seal and the pressure reading after.
Our Guardsman HVAC Cleaning Process

- 1
System identification and scope. We record the Guardsman model, serial, and installation date. Some Fairfax homes have mixed-brand systems; we note if the air handler is Guardsman and the condenser is not, since warranty and parts logic changes.
- 2
Camera inspection before quote. The camera goes in first. Then we talk. We run a borescope through every accessible duct run, coil face, and heat exchanger pass. You see what we see before any price is written.
- 3
Written price under Haven Standard Clause 1. We deliver one flat price per system, itemized by component, with no per-vent add-ons or trip-charge surprises. The price is fixed before work starts.
- 4
OEM or verified aftermarket parts selection. For Guardsman units under manufacturer warranty, we use OEM coils, motors, and control boards to preserve coverage. For out-of-warranty systems, we source quality aftermarket equivalents from trade-verified suppliers and document the substitution in writing.
- 5
Cleaning, testing, and photo record. We clean to manufacturer pressure-drop and temperature-split specifications, then run a full operational test. Every register boot, main trunk line, and component surface is photographed before and after. The photo record is delivered as a standard job deliverable.
- 6
365-Day Done Right Promise activation. The written guarantee goes into effect when we leave. If the work is not right, we make it right. No manager approval required.
Before
AfterWhat Guardsman HVAC Cleaning Costs in Fairfax
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Evaporator coil cleaning | $340-$480 | Coil accessibility (attic vs. closet), fin corrosion severity, refrigerant handling required |
| Blower assembly cleaning | $280-$420 | Wheel removal complexity, motor bearing condition, rebalancing needed |
| Condenser coil cleaning | $220-$360 | Seam disassembly required, protective coating reapplication, refrigerant line protection |
| Air handler full service (coil + blower + cabinet) | $520-$620 | Plenum seam sealing, filter rack modification, secondary drain pan condition |
| Heat exchanger cleaning with combustion analysis | $380-$540 | Soot depth, access panel fabrication, gas valve adjustment scope |
These are whole-system prices agreed in writing before work begins. We do not quote per-vent or per-register rates. Factors that increase cost: attic installations in Fairfax’s older split-levels near the Mosaic District, where access panels were never designed for maintenance; systems with degraded fiberglass liner that requires containment during cleaning; and heat exchangers with visible cracks that fail our pass/fail documentation and require replacement discussion.
Call (571) 526-0015 for a written estimate. Estimates are free. Bring a competitor’s quote and we’ll put our number next to it under our Free Second Opinion policy.
Why Fairfax Homeowners Call CleanRun Air Duct Cleaning Fairfax for Guardsman Work

We’ve cleaned Guardsman systems in Fairfax since 2013, including the early G-Series installs that are now hitting their first major service interval. Our crew includes technicians who have worked on Lennox, Trane, and Carrier as well, so when a Fairfax home has a Guardsman air handler married to a different-brand condenser, we understand the compatibility issues that single-brand shops miss.
Every job carries the 365-Day Done Right Promise in writing, not as a verbal courtesy. Every technician is background-checked and uniformed under Haven Standard Clause 3: Verified Crews. The equipment on our trucks includes Rotobrush, Nikro, Abatement Technologies, Honeywell, Aprilaire, and Guardsman-compatible tools you can verify independently. And every customer receives the documented photo record, a practice we’ve held since our first job.
Tomas Reyes, our owner, trained in HVAC and building systems technology at Queensborough Community College and built this crew on the principle that evidence comes before persuasion. In Fairfax, that means photographing the register boot in a Mosby Woods split-level before mentioning what the blower wheel probably looks like.
FAQs
No, professional cleaning by an independent service provider does not void a Guardsman warranty. Warranty coverage is voided only by unlicensed work, improper refrigerant handling, or use of non-OEM parts during a warranty claim repair. We document our cleaning methods and parts sources in writing to protect your coverage. If your system is still under warranty, we use OEM components and provide the documentation Guardsman requires for any future claim. Call (571) 526-0015 to discuss warranty status verification.
We verify parts availability against your serial number before quoting any repair that involves component replacement. Guardsman maintains distribution for units up to 15 years from manufacture date; beyond that, we source verified aftermarket equivalents and disclose the substitution in writing. For Fairfax’s 2015-2020 build wave, most G-Series and ProAir parts remain readily available. Call (571) 526-0015 with your model number for a parts check.
Clean if the heat exchanger passes camera inspection, the compressor amp draw is within 10% of spec, and repair costs over five years are projected below 40% of replacement. Replace if the heat exchanger fails, the compressor shows locked-rotor amps, or cumulative repair estimates exceed that threshold. We provide both numbers in writing and let the math guide the decision. Our Free Second Opinion applies to replacement quotes from other contractors. Call (571) 526-0015 for an honest assessment.
A single-component cleaning (coil or blower) typically takes 2-3 hours on site. A full air handler service with plenum sealing takes 4-5 hours. We schedule by the job, not by the hour, and we do not rush the photo documentation or the post-cleaning test sequence. Fairfax traffic patterns affect arrival windows, not the work itself. Call (571) 526-0015 to schedule a specific date.
You receive dated, labeled images of every duct run and component surface we accessed: the coil face before and after cleaning, the blower wheel hub close-up, the heat exchanger pass camera stills, and the pressure-test gauge reading if plenum work was performed. The photo record is delivered as a standard job deliverable, not an upsell. It is your documentation of what was actually found and what was actually done. Call (571) 526-0015 to see a sample record.
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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