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 Lewisville: What to Know First
We provide independent Guardsman air quality and sanitizing services in Lewisville, with most jobs completed in a single scheduled visit and a written price delivered before any work begins. Typical whole-system sanitizing runs $340-$680 for Lewisville homes, depending on system size and whether we’re treating for mold, bacteria, or odor. This page is for Guardsman owners who want to know what their equipment actually needs, what it costs, and how to verify the work was done. Call (940) 240-8552 for a written estimate at no charge.
How Guardsman Products Fail - and How We Fix Them
- Guardsman UV-C Series GUV-150: lamp degradation in hard-water areas. Lewisville’s water supply runs moderately hard, and the GUV-150’s quartz sleeve fouls with mineral scale faster than manufacturer estimates suggest. The lamp keeps glowing, but UV-C output drops below effective sterilization levels. We pull the sleeve, photograph the scale buildup, and replace with OEM-spec quartz or a treated aftermarket sleeve that extends service intervals.
- Guardsman HEPA-Aire 5000: seal fatigue at the plenum junction. The 5000’s gasket material stiffens after three to four North Texas summers, creating bypass air that never sees filtration. We find this by smoke-testing the junction, not by guessing. Our fix is a compression-fit seal replacement with a material rated for the temperature swing Lewisville attics see, then we photograph the sealed joint under pressure.
- Guardsman Ozone-Pro GOZ-220: residual ozone above safe thresholds. This unit’s corona cell can overproduce when humidity spikes above 70%, common in Lewisville during May and September. We meter ozone levels at the register, clean the cell with manufacturer-spec solution, and recalibrate the output controller. If the cell is pitted, we document it and quote replacement before proceeding.
- Guardsman PCO-300 photocatalytic unit: catalyst coating deactivation. The titanium dioxide grid loses effectiveness when coated with kitchen grease or pet dander, which we see regularly in Lewisville’s open-plan homes near Valley Ridge. We remove the grid, document coating condition with macro photography, and either restore with UV reactivation or replace the grid depending on what the photo shows.
- Guardsman Ion-Flow GI-4000: accumulation on collector plates in pollen season. Lewisville’s cedar elm and oak pollen loads are heavy in March and April. The GI-4000’s plates can bridge with conductive debris, causing arc faults that the control board logs as errors. We clean the plates with a non-residue solvent, check plate spacing with a feeler gauge, and reset the fault log so the homeowner can verify normal operation.
Our Guardsman Air Quality & Sanitizing Process
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Written price first. We inspect the Guardsman unit, identify the series and serial number, and deliver a written scope and price before touching a tool. Haven Standard Clause 1.
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Photo documentation of condition. We photograph the interior of the plenum, the active component, and the register-side airflow path. Here’s the before photo. Now let’s talk about what happens next.
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Component-specific service. We service or replace using OEM Guardsman parts or verified aftermarket equivalents that match the unit’s pressure and electrical specs. We note the source on the work record.
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Performance verification. We test airflow, measure output levels where applicable (UV intensity, ozone PPM, ion density), and compare against manufacturer baseline data for that series.
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After photo and written record. We photograph the serviced components, compile the before-and-after set, and deliver it with the invoice. The 365-Day Done Right Promise applies in writing.
BeforeAfterWhat Guardsman Air Quality & Sanitizing Costs in Lewisville
| Service | Typical Range | What Moves the Price |
|---|---|---|
| UV lamp replacement (GUV series) | $180-$290 | Quartz sleeve condition; attic access difficulty |
| HEPA seal restoration (5000 series) | $240-$380 | Plenum size; number of junction points |
| Ozone unit service (GOZ series) | $200-$340 | Cell condition; recalibration vs. replacement |
| Whole-system sanitizing (any series) | $340-$680 | System tonnage; mold vs. bacteria vs. odor treatment |
| Air purifier installation (new Guardsman unit) | $680-$1,400 | Electrical run length; return-air modification needed |
These are whole-system prices, not per-vent teaser rates. The price we write is the price you pay. Call (940) 240-8552 for an exact quote on your Guardsman system - estimates are free, and we provide a Free Second Opinion on any competitor’s written estimate.
Why Lewisville Homeowners Call CleanRun Air Duct Cleaning Lewisville for Guardsman Work
We’ve been working in Lewisville since 2013, and we’ve learned that Guardsman owners want the same thing we do: evidence you can look at. Every job carries the 365-Day Done Right Promise in writing, backed by Haven Standard Clause 5. Our technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews. We also service Lennox, Trane, and Carrier systems, so when a home has mixed-brand equipment, we don’t hand off to another contractor. The photo record is standard, not an upsell. Tomas Reyes and our crew have handled Guardsman units in Lewisville homes from Old Town to Castle Hills, and we know the flex-duct sag and hard-water scaling that show up in this market.
FAQs
No. As an independent Guardsman service provider, we use OEM-spec or equivalent parts and document our work to manufacturer standards. Warranty coverage depends on part authenticity and proper installation, not on whether the technician wears a manufacturer’s badge. We keep serial numbers and part numbers on your job record so any warranty claim has backing. Call (940) 240-8552 if you need documentation for a warranty inquiry.
You receive a Documented Photo Record of every duct run and component we accessed, with timestamps, plus the written scope showing what was treated and with what agent. We started this practice in 2013 because it’s the only proof that holds up. If you want, we’ll review the photos with you on-site before we pack up. Haven Standard Clause 2: Documented Delivery.
We recommend replacement when the repair exceeds 60% of a new unit’s installed cost, or when the unit uses phased-out parts that can’t be sourced reliably. For the GUV-150 and 5000 series still in production, repair usually makes sense. For discontinued lines, we’ll show you parts availability and let the numbers decide. We don’t sell equipment, so our recommendation isn’t tied to a commission. Call (940) 240-8552 and we’ll run the math in writing.
UV lamps need replacement every 9,000-12,000 hours of operation, typically 12-18 months in a Lewisville home running year-round. HEPA seals should be inspected every two years. Ion and ozone units benefit from annual plate or cell cleaning, especially if you have pets or cook with gas frequently. We don’t sell maintenance contracts; we put the schedule in writing and let you decide when to call.
We don’t coupon. The $79 offers we see in Lewisville typically cover a single register with a shop vac, then escalate once the truck is in your driveway. Our price is flat per system, agreed in writing, and includes the full Documented Photo Record. Bring us any written competitor estimate and we’ll provide a Free Second Opinion, line item by line item, under Haven Standard Clause 4.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning Lewisville at CleanRun Air Duct Cleaning Lewisville, serving Lewisville and nearby areas.