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 Katy: What to Know First
We provide independent Guardsman HVAC cleaning in Katy, TX, for evaporator coils, blowers, condensers, air handlers, and heat exchangers, with most jobs completed in a single scheduled visit and a written price delivered before we touch a single panel. A typical Guardsman system cleaning in Katy runs $280-$520 depending on which components need attention and how accessible the air handler is in your attic or closet. We’re not affiliated with or authorized by Guardsman; we work on their equipment as an independent Guardsman service provider, using trade-standard tools and procedures that keep your warranty intact.
This page is for Katy homeowners who searched their Guardsman model number and found us, or who noticed weak airflow, ice on the coil, or a blower that sounds like it’s working harder than it should. If that’s where you are, call (346) 666-7165. We’ll send a written estimate. No visit fee to get the number.
How Guardsman Products Fail - and How We Fix Them
- Guardsman G-Series evaporator coils develop micro-channel clogging from Katy pollen loads. The G-Series uses a lanced-fin design with tight tube spacing that traps cottonwood and oak pollen between seasonal peaks. We see this in Cinco Ranch and Seven Meadows every April and May. Our fix: foaming cleaner applied with low-pressure sprayers, followed by pressurized rinse and a drain pan treatment. The camera shows the difference at the third fin row.
- Guardsman ProAir blowers collect debris at the squirrel-cage hub. The ProAir’s direct-drive motor sits close to the wheel center, and over two or three Katy summers the hub cavity packs with fine dust and drywall residue from new construction. It throws the wheel out of balance. We remove the full assembly, clean the hub cavity with compressed air and solvent, and check runout before reinstalling. No guesswork; we photograph the hub before and after.
- Guardsman Shield condensers suffer fin corrosion near the Gulf Coast humidity line. Katy’s 75%+ summer humidity accelerates galvanic corrosion where the aluminum fins meet copper tubes. The Shield series uses a coated fin stock, but coating breaks down after 6-8 years in our climate. We clean with non-alkaline foamer, straighten damaged fins with a comb tool, and apply a corrosion inhibitor. We note coating condition in the photo record so you have a baseline for next year.
- Guardsman Elite air handlers develop mold at the flex-duct connection. The Elite’s positive-pressure cabinet design can push conditioned air into the plenum gap if the flex duct seal degrades. Warm attic air gets pulled back in, condenses, and grows mold on the blower deck. We see this in older Katy homes near LaCenterra where the attic insulation has settled. Our fix: reseal with mastic, clean the blower deck and surrounding framing, and photograph the repair.
- Guardsman Titan heat exchangers soot at the primary cell bends. The Titan’s serpentine cell design creates low-velocity zones where incomplete combustion deposits carbon. This isn’t a cleaning-only fix, but cleaning reveals it. We scope the cells with a borescope during the HVAC cleaning service, document any scaling or deformation, and flag it for furnace evaluation. We’ve caught three cracked Titans in Katy this way before they became safety issues.
Our Guardsman HVAC Cleaning Process

- 1
Written price first. We scope the job on arrival, identify your Guardsman model and serial, and deliver a written price before removing panels. Haven Standard Clause 1.
- 2
Photo baseline. We photograph every component before touching it. The before photo does the talking. Everything after that is just paperwork.
- 3
Component-specific cleaning. Coils get foaming cleaner and low-pressure rinse. Blowers get hub-cavity detail work. Condensers get fin combing and corrosion treatment. We match the method to the Guardsman design, not run a universal shop-vac cycle.
- 4
OEM or verified aftermarket parts decision. If we find a failed drain pan, corroded contactor, or cracked fitting, we source OEM Guardsman parts when available. When lead times stretch past a week, we use quality aftermarket equivalents from trade-recognized suppliers and document the substitution in writing.
- 5
Operational test and photo record delivery. We run the system through a full cycle, measure temperature drop and static pressure, and deliver your documented photo record before we leave. The 365-Day Done Right Promise applies from that moment.
Before
AfterWhat Guardsman HVAC Cleaning Costs in Katy
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Evaporator coil cleaning | $280-$380 | Accessibility (attic vs. closet), fin condition, drain pan replacement needed |
| Blower assembly cleaning | $240-$340 | Hub debris depth, motor removal required, wheel balance issue |
| Condenser coil cleaning + fin straightening | $220-$320 | Corrosion severity, refrigerant line obstruction, fin replacement count |
| Full air handler cleaning (coil + blower + cabinet) | $420-$520 | Plenum condition, mold remediation needed, duct seal repairs |
| Heat exchanger inspection + cleaning | $180-$280 | Borescope access difficulty, cell count, carbon deposit severity |
These are whole-system prices, not per-vent or per-coil-face teaser rates. We don’t quote $79 and find $600 of “discovered problems” in your attic. The price we write is the price you pay. Call (346) 666-7165 for a free estimate on your specific Guardsman unit.
Why Katy Homeowners Call CleanRun Air Duct Cleaning Katy for Guardsman Work

We’ve cleaned Guardsman equipment in Katy since 2013, and we’ve documented every job. The 365-Day Done Right Promise means if your blower starts vibrating two months after we cleaned it, we come back and make it right, backed in writing, not subject to manager approval. Our technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews, and they arrive identified by name.
We also service Lennox, Trane, and Carrier systems, so when a Katy homeowner has mixed-brand equipment or is evaluating a replacement, we can compare real condition across units rather than push one manufacturer’s solution. Tomas Reyes, our owner, spent years running jobs in the older ranch homes near LaCenterra at Cinco Ranch, and he built our process around one habit: pulling the camera out before touching a single register. You see what we see. Then you decide.
FAQs
No, routine maintenance and cleaning by a qualified independent technician does not void your Guardsman warranty. The Magnuson-Moss Warranty Act prohibits manufacturers from voiding coverage solely because you chose an independent service provider. We document our work with photos and written scope, which supports any future warranty claim you might file with Guardsman directly. Keep your photo record with your homeowner files.
Ice on the evaporator coil, weak airflow at registers, or a blower that runs louder than last season usually indicate cleaning will restore performance. If the compressor won’t start, refrigerant is low, or the heat exchanger shows cracks, that’s repair or replacement territory. We scope the system during our estimate and tell you which category you’re in before quoting any work. Call (346) 666-7165 to schedule the inspection.
Common Guardsman maintenance parts, drain pans, and contactors are available through Houston-area HVAC distributors with 2-3 day lead time. Older or specialized components, particularly for discontinued Titan series furnaces, can stretch to 10-14 days. When OEM isn’t practical, we source quality aftermarket equivalents from recognized suppliers and document the substitution. We never leave a system inoperable waiting for a badge.
Every 2-3 years for the evaporator coil and blower in Katy’s climate, with condenser cleaning annually before summer peak. Homes near construction, with indoor pets, or with fiberglass duct liner may need more frequent attention. We include a condition assessment and recommended interval in your photo record so you can plan rather than react.
Most scheduled visits include both estimate and service, since the scope is determined once we’re at the unit. If we find a failed part requiring ordering, we’ll clean what we can, seal the system safely, and return for completion at no additional trip charge. The written price covers the full scope, not per-visit billing.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning Katy at CleanRun Air Duct Cleaning Katy, serving Katy and nearby areas.




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