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.
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AfterGuardsman Air Quality & Sanitizing in San Antonio: What to Know First
CleanRun provides independent Guardsman air quality and sanitizing service in San Antonio, with most scheduled jobs completed in a single visit and written pricing delivered before any work begins. Typical whole-system sanitizing runs $340-$620 for Guardsman-equipped homes, depending on system size and whether mold or bacterial treatment is needed. This page is for San Antonio homeowners who own Guardsman air purifiers, UV systems, or whole-home sanitizing equipment and need service from a technician who knows the product line without sending you back to a national call center. Call (726) 600-7155 for a free written estimate.
How Guardsman Products Fail - and How We Fix Them
- Guardsman GUV-1000 UV lamp housing seal degradation. The silicone gasket around the lamp access port hardens after 3-4 San Antonio summers, letting conditioned air leak into the return plenum and bypass the UV entirely. We replace with OEM-spec gasket material rated for 180°F continuous, not generic door seal, and photograph the seal surface before reassembly.
- Guardsman GAP-5000 electronic air cleaner power supply flicker. The 24V transformer in early GAP-5000 units drops voltage during high-heat cycles, which San Antonio’s August afternoons trigger daily. The ionizing wires then produce inconsistent charge and ozone smell without actually capturing particles. We test under load, replace with a heavy-duty transformer if needed, and verify wire tension to 0.008″ spec.
- Guardsman GMS-2000 media sanitizer UV-C intensity loss. The 253.7nm lamp degrades to 70% output in 9,000 hours, but the status LED stays green. Homeowners in Alamo Heights and Terrell Hills call us thinking their allergies are worse; the camera shows biofilm still growing on the evaporator. We meter actual UV output and replace only when the reading falls below 40 µW/cm² at 1 meter.
- Guardsman GOC-3000 odor control carbon media saturation. In San Antonio’s humidity, the activated carbon loads with moisture before it loads with VOCs, becoming a mold substrate. We find this in Stone Oak homes with tight envelopes and no dedicated dehumidification. We replace with hydrophobic catalytic carbon and verify downstream humidity stays below 55% RH.
- Guardsman GUV-2000 ballast failure after power events. San Antonio’s spring storm season sends voltage spikes that fry the magnetic ballast in GUV-2000 units installed 2016-2019. The lamp goes dark, the homeowner doesn’t notice for months, and mold establishes in the A-coil plenum. We upgrade to electronic ballast where physically possible, or replace the full assembly with current OEM spec.
Our Guardsman Air Quality & Sanitizing Process
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Written price delivered first. Haven Standard Clause 1: we inspect, scope every accessible duct run, and put the full scope and price in writing before touching a panel.
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Guardsman-specific diagnostic. We meter UV output, test ionizer voltage under load, and check carbon media weight against factory spec, not just “looks okay.”
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Parts decision documented. OEM Guardsman parts when available and warranted; quality aftermarket when the OEM part is back-ordered or superseded. The choice and reasoning go on your written scope.
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Service with photo record. Every duct run, every component bay, before and after. The camera goes in first. Then we talk.
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Post-service verification. UV meter reading, particle count downstream of the electronic air cleaner, or humidity at the carbon outlet, whichever applies to your system.
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365-Day Done Right Promise in writing. If the sanitizing doesn’t hold, we return and make it right. The promise is on your job record, not just our website.
BeforeAfterWhat Guardsman Air Quality & Sanitizing Costs in San Antonio
| Service | Typical Range | What Moves It |
|---|---|---|
| Guardsman UV lamp replacement + housing reseal | $180-$290 | Single vs. dual-lamp system; plenum access difficulty |
| Guardsman electronic air cleaner service | $240-$380 | Transformer replacement, wire set, or full power pack |
| Whole-system mold/bacteria sanitizing | $340-$620 | System tonnage, number of duct runs, severity of contamination |
| Carbon media replacement + humidity correction | $290-$450 | Media volume, whether dehumidifier integration is needed |
| UV-C output verification + documentation only | $95-$140 | Number of lamps, access requirements |
These are whole-system prices, not per-vent teases that balloon once the truck arrives. Every estimate is free, written, and valid for 30 days. Call (726) 600-7155.
Why San Antonio Homeowners Call CleanRun Air Duct Cleaning San Antonio for Guardsman Work
We’ve worked on Guardsman equipment in San Antonio since 2013, including the first-generation GUV units still running in Castle Hills homes and the GAP series that dominated new construction near Rim Rock. Tomas Reyes, our owner, trained in HVAC systems technology at Queensborough Community College and has logged thousands of hours on ductwork here, including tract homes near Stone Oak where flex duct collapses and dust accumulation tend to be textbook examples. When Guardsman parts are back-ordered, we also service Lennox, Trane, and Carrier air quality equipment, so we’re not stuck waiting on a single supply chain. Every job carries the 365-Day Done Right Promise, Haven Standard Clause 3 verified crews, and the full photo record we started delivering in 2013.
FAQs
No. As an independent Guardsman service provider, we use OEM-spec or equivalent parts and document every step; warranty coverage depends on the equipment’s original terms and whether factory-authorized parts are used, which we specify on your written scope. If you have concerns, we’ll pull the warranty language and walk through it before any work starts. Call (726) 600-7155.
We deliver a Documented Photo Record of every duct run and component bay, plus meter readings for UV output, particle counts, or humidity as applicable to your system. The photo record is included as a standard deliverable on every job, not an extra. If you want third-party verification, we’ll note the test points for your own follow-up.
The $79 coupon model typically covers a visual peek and a shop-vac at the register, not negative-pressure extraction through the full duct run or component-level service on the Guardsman unit itself. Our written price covers the complete scope, photographed, with the 365-Day Done Right Promise. Bring us their written estimate; Haven Standard Clause 2 gives you a Free Second Opinion, our number next to theirs.
We repair when the housing is sound, parts are available or have a quality aftermarket equivalent, and the repair cost is under half of replacement. We recommend replacement when the ballast or power supply is obsolete, the housing is cracked, or you’ve already repaired the same component twice. The written scope states both options when it’s a close call.
UV lamps need replacement every 9,000-12,000 hours of runtime, which is typically 12-18 months here given cooling-season load. Electronic air cleaner cells need annual cleaning; carbon media needs inspection every two years, sooner if your home runs above 55% relative humidity. We note the next service date on your job record and don’t chase you with marketing calls.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning San Antonio at CleanRun Air Duct Cleaning San Antonio, serving San Antonio and nearby areas.