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 Littleton: What to Know First
We provide independent Guardsman HVAC cleaning in Littleton with written prices delivered before any work starts and a documented photo record of every component we touch. Most Guardsman evaporator coil, blower, and condenser cleanings are completed in a single scheduled visit, with your written quote fixed before the first panel comes off. This page is for Guardsman equipment owners in Littleton neighborhoods like Columbine Knolls, Ken Caryl Ranch, and Downtown Littleton who want to know what they’ll pay, what will actually be done, and what the inside of their air handler looks like before anyone starts scrubbing. Call (720) 315-7291 for a free estimate.
How Guardsman Products Fail - and How We Fix Them
- Guardsman G-Series evaporator coils develop fin corrosion at the lower third where condensate pans drain slowly in Littleton’s hard water conditions. The calcium and magnesium content in South Platte Valley water leaves white scale deposits that trap moisture against aluminum fins. We pull the coil, photograph the fin pack, descale with manufacturer-approved foaming cleaner, and apply a pH-neutral coil treatment that won’t void your remaining warranty.
- Guardsman ProAir blowers collect debris at the squirrel-cage hub because the factory hub cap sits flush without the drainage gap found on Lennox or Carrier equivalents. Dust and pet hair pack into the cavity, throwing the wheel off balance and causing bearing wear that sounds like a low rumble at startup. We remove the entire blower assembly, clean the hub cavity with compressed air and soft brushes, and check runout before reassembly.
- Guardsman Guardian condenser coils clog at the rear third where cottonwood seed from the South Platte River corridor collects in late June through early July. The louvered guard design traps seed more aggressively than Trane’s wire-grille pattern. We straighten any bent louvers, wash the coil with low-pressure foaming cleaner from the inside out, and document the pressure drop before and after.
- Guardsman heat exchangers in the H-Series develop soot scaling when prior maintenance skipped combustion analysis. The induced-draft blower pulls slightly negative, and any flame impingement from dirty burners leaves carbon deposits that reduce heat transfer efficiency. We scope the heat exchanger with a borescope camera, clean with nylon brushes sized to the cell diameter, and perform a combustion test before we sign off.
- Guardsman flex duct connections at the plenum separate in homes with truss uplift, common in Littleton’s 1990s-era construction with raised-heel trusses. The gap pulls attic air into the return, loading the evaporator coil with insulation fibers and construction dust. We reseal with mastic and mechanical fasteners, then clean the coil - because fixing the source without cleaning the result leaves you breathing the debris for another season.
Our Guardsman HVAC Cleaning Process

- 1
Inspection and photo documentation. We pull the inspection camera before quoting anything. The camera doesn’t negotiate - it just shows what’s there. You’ll see the debris load, fin condition, and any corrosion on your phone or tablet before we discuss price.
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Written price delivered. Haven Standard Clause 1: written price before any work starts, every time. Your quote specifies OEM or quality aftermarket parts, labor scope, and the 365-Day Done Right Promise.
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Component removal and cleaning. We use Rotobrush contact cleaning for blower assemblies, Nikro HEPA-contained negative-pressure extraction for plenum and duct work, and Guardsman-approved foaming cleaner for coils. Every component is photographed before and after.
- 4
Parts replacement when needed. We stock common Guardsman blower belts, contactors, and capacitors. For proprietary controls or heat exchanger cells, we source OEM or cross-reference to quality aftermarket with equivalent specifications - your choice, documented in writing.
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Performance verification. We measure static pressure, temperature split, and amp draw against Guardsman’s published specifications. Results go in your job record with the photo documentation.
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Cleanup and deliverables. You receive the written scope, before-and-after photos of every duct run and component cleaned, and the 365-Day Done Right Promise in writing before we leave.
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AfterWhat Guardsman HVAC Cleaning Costs in Littleton
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Evaporator coil cleaning | $280-$420 | Coil accessibility (A-coil vs. slab), fin corrosion severity, need for chemical treatment |
| Blower assembly cleaning | $180-$290 | Hub debris depth, bearing condition, motor amp draw testing |
| Condenser coil cleaning | $160-$240 | Louver damage, cottonwood seed compaction, refrigerant access needed |
| Heat exchanger cleaning | $340-$480 | Soot depth, borescope access points, combustion analysis required |
| Air handler full service | $520-$780 | Combination of above, plus plenum resealing, filter cabinet modification |
These are whole-system prices, not per-vent teaser rates. The number we write is the number you pay. Call (720) 315-7291 for a free estimate - we’ll put our written price next to any competitor’s quote under our Free Second Opinion.
Why Littleton Homeowners Call CleanRun Air Duct Cleaning Littleton for Guardsman Work

We’ve cleaned Guardsman equipment in Littleton since 2013, including plenty of jobs in Columbine Knolls where the homes are older and the duct liners tell a longer story than the listing price suggests. Our technicians are background-checked, uniformed, and identified by name before arrival - Haven Standard Clause 3: Verified Crews. Every job carries the 365-Day Done Right Promise in writing, not as a policy subject to manager approval.
We also service Lennox, Trane, and Carrier systems, which matters when your home has mixed-brand equipment or when a previous homeowner swapped components without updating documentation. Our equipment roster - Rotobrush, Nikro, Abatement Technologies, Honeywell, Aprilaire, and Guardsman - is published here so you can verify what we use before agreeing to a price.
FAQs
No. As an independent Guardsman service provider, we follow manufacturer maintenance specifications and use approved cleaning methods and chemicals. Warranty coverage requires that maintenance be performed to manufacturer standards, not that it be performed by the manufacturer. We document our process and materials in your job record for any future warranty claim. Call (720) 315-7291 if you need a copy for your warranty file.
It depends on the component and your remaining warranty period. For proprietary controls, heat exchangers, and refrigerant circuit components, we typically recommend OEM to preserve warranty coverage. For wear items like blower belts, contactors, and capacitors, quality aftermarket with equivalent specifications performs identically at lower cost. We list both options in your written quote with the trade-offs explained - your choice, documented before work starts.
You receive a Documented Photo Record of every component we touched, before and after, as a standard deliverable on every job. This is not an extra service or a marketing promise - it is part of the job record we generate for every visit. The photo record shows fin condition, debris removal, and assembly reassembly. If you want to verify further, we leave the static pressure readings and temperature split data in the same file.
Evaporator coils and blowers in Littleton typically need cleaning every 3-5 years, with condensers checked annually for cottonwood seed and hard water scale. Homes near the South Platte River corridor, with pets, or with finished basements where the air handler runs continuously may need more frequent service. We inspect and advise based on what the camera shows, not a calendar.
Replacement makes sense when fin corrosion exceeds 30% of the coil surface, blower wheels show cracks or hub wear, or heat exchanger cells have visible cracks or thinning. We show you the borescope or camera footage and explain the failure mode before discussing replacement. Our written quote separates cleaning from replacement so you can decide with full information. Call (720) 315-7291 for an exact assessment.
Ready to see what’s inside your Guardsman system? Call (720) 315-7291 for a free estimate. We’ll pull the camera, show you the footage, and deliver a written price before any work starts - Haven Standard Clause 1, every time.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning Littleton at CleanRun Air Duct Cleaning Littleton, serving Littleton and nearby areas.




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