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.
Honeywell Vent Sanitizing: The Denver Owner’s Guide
CleanRun stocks and installs Honeywell-compatible vent sanitizing systems for Denver homeowners, with typical installed pricing from $340 to $580 per system depending on duct configuration and access. Most Honeywell UV or ionization sanitizing module replacements are completed in a single visit, and we carry the common Honeywell 24V UV100E and REME-HALO-compatible series on our trucks. Homeowners usually discover the issue after a seasonal HVAC startup, when the indicator light is out, a faint ozone smell disappears, or their allergy symptoms return despite the system running.
Which Honeywell Models This Applies To
Honeywell vent sanitizing falls into two main series: the UV100E line (24-volt ultraviolet coil sanitizers) and the F300 Electronic Air Cleaner line with optional post-filter UV modules. The UV100E1043 and UV100E3007 are the units we see most often in Denver homes built between 2015 and 2020, typically mounted downstream of the evaporator coil in a horizontal air handler. To identify yours, check the service label inside the access panel for the model suffix and voltage rating. Some early UV100E units shipped with 120V ballasts that were later recalled; if your label shows a manufacture date before 2016, we verify ballast compatibility before quoting.
We also service Honeywell-compatible REME-HALO and Guardian Air QR+ in-duct units, though these are manufactured by RGF and carry different lamp replacement intervals. For OEM Honeywell lamps, we stock genuine 36-watt and 55-watt replacements. For the UV100E housing itself, we offer quality aftermarket equivalents from Abatement Technologies that match Honeywell’s 2.3-inch mounting collar and 15-inch lamp length, at roughly 30% below OEM lamp pricing. Haven Standard Clause 1 applies: the written price shows both options before you choose.
Signs Your Honeywell Vent Sanitizing Is Failing

- The indicator light is dark or flickering. Honeywell UV ballasts use a green LED visible through the viewport. A steady glow means the lamp is drawing correct amperage; flickering or darkness usually means the lamp has reached its 9,000-hour rated life or the ballast has failed from heat cycling in Denver’s dry climate.
- You smell ozone during system operation. A functioning Honeywell UV-C lamp produces minimal ozone. If you notice a sharp, metallic smell, the lamp may be operating at reduced output and creating partial oxidation, or the quartz sleeve has cracked and is allowing VOC off-gassing from the lamp base.
- Allergy symptoms return in spring or fall. The UV100E series is sized to reduce coil mold load. When output drops below 40 microwatts per square centimeter, microbial suppression fails. We measure this with a UV radiometer during service calls in Capitol Hill and Wash Park, where older systems see this most.
- The lamp shows visible darkening or white deposits. Mercury amalgam lamps develop end-blackening as electrodes degrade. White powder on the quartz indicates seal failure from thermal shock, common in Denver where overnight lows in winter stress the housing as the furnace cycles.
- Your HVAC technician notes coil mold during maintenance. The UV100E is installed specifically to suppress coil mold. If your seasonal tune-up shows biological growth, the lamp is either failed or improperly positioned relative to the coil face.
Before
AfterReplacement Cost & What’s Included
| Component | Price Range (Denver) |
|---|---|
| Honeywell OEM 36W UV lamp replacement | $180 - $260 |
| Honeywell OEM 55W UV lamp replacement | $220 - $310 |
| Ballast replacement (OEM or equivalent) | $140 - $195 |
| Full UV100E housing swap (lamp, ballast, quartz sleeve) | $340 - $580 |
| Quartz sleeve cleaning or replacement | $75 - $140 |
Pricing varies with access. A UV100E mounted in a basement air handler with 30 inches of clearance is straightforward. The same unit in a Parker attic crawl with a plenum-mounted furnace takes longer and costs more. Every quote is written before work starts, under Haven Standard Clause 1. The 365-Day Done Right Promise covers the installation and the lamp output; we return with a radiometer if you suspect weak performance.
DIY or Call Us?

What you can safely check: verify the lamp indicator, confirm the breaker is live, and inspect the quartz sleeve for visible cracks through the viewport. Do not remove the lamp while powered. The 24V control circuit is low voltage but the ballast generates 600V starting potential, and a cracked quartz sleeve exposes you to UV-C radiation that causes corneal burns within seconds. We have replaced lamps for homeowners who tried and found the mounting collar seized to the plenum from years of heat cycling.
If the lamp is dark and the sleeve is intact, the fix is usually a lamp swap. If the ballast is suspect or the housing is leaking light into the return air, call us. Tomas Reyes and our crew carry the full Honeywell-compatible inventory on our trucks, and we photograph the old lamp’s condition, the new lamp’s serial number, and the radiometer reading before we leave. Here is what the camera found. Here is what it costs to fix it. You decide.
FAQs
Rated life is 9,000 hours, or roughly one year of continuous operation. In Denver’s high-elevation, low-humidity climate, we see actual replacement need at 10 to 14 months because thermal cycling is less severe than in humid climates. We log lamp hours during service and note the install date on your photo record. Call (720) 799-2292 when the indicator dims.
The lamp and quartz sleeve are consumables; the ballast and housing are repairable only if the specific component has failed in isolation. A cracked housing or corroded socket means full replacement. We diagnose with a multimeter and radiometer, then show you the reading. Our written quote separates parts so you see exactly what is worth fixing.
A standard Honeywell UV100E lamp replacement takes 45 to 75 minutes including access, safety lockout, radiometer verification, and photo documentation. A full housing replacement in a tight attic plenum can run two to three hours. We quote the time in writing before starting.
Yes. We carry 36W and 55W Honeywell OEM lamps, Abatement Technologies-compatible housings, and ballasts for the UV100E series on every Denver-area truck. For less common Honeywell F300 integrated modules or the older UV2400U series, we source overnight and schedule the return visit. We also stock Lennox, Trane, and Carrier sanitizing components for mixed-system homes.
CleanRun Duct Repair & Cleaning is independently owned and operated under the Haven Standard. We are not affiliated with Honeywell International Inc. Honeywell is a registered trademark of Honeywell International Inc.
Ready for a written quote? Call (720) 799-2292. A live person answers, 24/7. We’ll schedule a technician to inspect your Honeywell system, deliver a written price before any work starts, and leave you with a Documented Photo Record of every duct run and sanitizing component. Free Second Opinion available on any competitor’s written estimate.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning Denver at CleanRun Air Duct Cleaning Denver, serving Denver and nearby areas.




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