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.
Aprilaire Air Quality & Sanitizing in Round Rock: What to Know First
CleanRun Duct Repair & Cleaning provides independent Aprilaire air quality and sanitizing services in Round Rock, with most jobs scheduled within a few business days and completed in a single visit. Every Aprilaire job starts with a written price before any work begins - Haven Standard Clause 1 - and ends with a documented photo record of every duct run we touch. Typical Aprilaire air quality work in Round Rock runs from $340 for a targeted bacteria sanitizing treatment on a single-zone system up to $1,200 for whole-home mold remediation with UV light installation on larger Aprilaire 5000-series setups. Call (737) 259-5752 for a free estimate with your model number ready.
This page is for Aprilaire owners in Round Rock who’ve noticed persistent odors, elevated allergy symptoms, or visible microbial growth around registers and want a technician who can name the specific Aprilaire component causing it. We also service Lennox, Trane, and Carrier systems, but this page covers Aprilaire specifically.
How Aprilaire Products Fail - and How We Fix Them
- Model 5000 Electronic Air Cleaner arcing and ozone odor. The ionizing wires in the Model 5000 collect conductive debris from Round Rock’s cedar pollen season, which creates intermittent arcing across the cell plates. Homeowners smell a sharp metallic odor and see the power light flicker. We remove the cell assembly, clean it with manufacturer-specified solution rather than dishwasher methods that warp the aluminum, and test ionizer output with a field meter before reassembly.
- Model 600/700 humidifier pad microbial growth. The water panel in these flow-through humidifiers sits in a dark, wet environment six months a year. In Round Rock’s hard water zones, scale buildup traps organic material that blooms into visible mold. We replace the pad with an OEM Aprilaire 35 or 45 panel - aftermarket pads with incorrect wicking density either dry out or oversaturate the drain - and treat the housing with a non-residual sanitizer that won’t enter the airstream.
- Model 1210/2210/3210 media cabinet bypass leakage. The plastic bypass damper on these compact media cabinets cracks at the pivot pin after three to five years of thermal cycling. Unfiltered air leaks around the MERV 13 media, carrying pollen and construction dust from Teravista and Stone Oak Ranch builds directly into the plenum. We replace the damper with the revised Aprilaire part or fabricate a metal replacement if the housing itself has distorted.
- Model 8100/8220 ventilator intake contamination. These energy recovery ventilators draw outside air through a core that can harbor mold if the drain line clogs with pollen debris. The core is a sealed unit - no field repair possible - but we can test airflow balance, clear the condensate path, and treat the downstream ducting if contamination has spread. Replacement cores run $280-$400 plus labor.
- Model 1850/1870 dehumidifier evaporator coil biofilm. The cold coil in these whole-home dehumidifiers runs wet for months during Round Rock’s extended cooling season. Without periodic antimicrobial treatment, the aluminum fins develop a slippery biofilm that sheds spores into the supply air. We apply a foaming cleaner specifically rated for aluminum HVAC coils, then verify drain pan slope and pump operation so the root cause doesn’t return.
Our Aprilaire Air Quality & Sanitizing Process

- 1
Model verification and symptom mapping. We confirm the Aprilaire series, serial number, and installation date, then match reported symptoms - odor type, location, seasonality - against known failure patterns for that unit.
- 2
Camera inspection before quote. The camera goes in first. Then we talk. We run a borescope through the main trunk line and any accessible branch runs to document contamination extent, then show the homeowner what we found before naming a price.
- 3
Written scope and pricing. Haven Standard Clause 1: we deliver a written price for the complete job - parts, labor, treatments, and documentation - before any panel comes off. No per-vent add-ons, no equipment-rental surprises.
- 4
OEM or verified-equivalent parts selection. For Aprilaire components under manufacturer warranty, we use OEM parts to preserve coverage. For out-of-warranty units, we source quality equivalents with documented compatibility - never universal-fit parts that require field modification.
- 5
Treatment execution with negative-pressure containment. We isolate the work zone with portable HEPA filtration, apply antimicrobial or sanitizing agents per manufacturer dwell-time requirements, then verify with ATP surface testing where mold was present.
- 6
Photo record delivery and 365-Day Done Right Promise activation. Before-and-after images of every treated duct run, plus the written scope, are delivered as a standard job record. The 365-Day Done Right Promise is in writing, not subject to manager approval.
Before
AfterWhat Aprilaire Air Quality & Sanitizing Costs in Round Rock
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Single-zone bacteria/odor sanitizing | $340-$520 | System size, contamination extent, access difficulty |
| Whole-home mold treatment with HEPA | $680-$950 | Number of affected runs, presence of insulation damage |
| UV-C light installation (Aprilaire-compatible) | $420-$680 | Duct material (sheet metal vs. flex), electrical routing |
| Model 5000 deep cell restoration | $280-$450 | Cell condition, whether collector plates need resurfacing |
| ERV/HRV core replacement with duct sanitizing | $680-$1,200 | Core availability, downstream contamination spread |
Factors that increase cost: hard water scale requiring pre-treatment, vermin contamination needing removal before sanitizing, or Aprilaire units installed in attic spaces with limited access. We disclose these during camera inspection, before you agree to anything. Estimates are free - call (737) 259-5752.
Why Round Rock Homeowners Call CleanRun Duct Repair & Cleaning for Aprilaire Work

We’ve served Round Rock since 2013, including repeat Aprilaire jobs in Stone Oak Ranch where construction dust from ongoing development loads the media cabinets faster than standard replacement intervals predict. Tomas Reyes runs a camera through every main trunk line before quoting - a practice he started after too many homeowners paid for “sanitizing” that never reached the contamination source.
Our crews are background-checked and uniformed under Haven Standard Clause 3: Verified Crews. The equipment roster includes Rotobrush, Nikro, Abatement Technologies, and Aprilaire OEM components - names you can verify independently. Every job carries the 365-Day Done Right Promise in writing, and we offer a Free Second Opinion on any competitor’s written estimate. We also maintain parts familiarity with Lennox, Trane, and Carrier for homes with mixed-brand HVAC setups.
FAQs
No, if performed by a qualified technician using manufacturer-compatible methods and parts. As an independent Aprilaire service provider, we document every step to preserve warranty coverage where it still applies. Using non-OEM replacement cells or dishwasher-cleaning the Model 5000 ionizer assembly, however, can void specific component warranties. Call (737) 259-5752 and we’ll verify your unit’s warranty status before work starts.
You receive a documented photo record of every duct run, before and after, plus ATP surface test results where mold treatment was performed. The photo record is included as a standard deliverable on every visit - not an upsell. If contamination returns within 365 days, the Done Right Promise covers re-treatment at no charge.
Replace if the unit is over 12 years old and requires a core or coil replacement exceeding 60% of new-unit cost, or if the model has been discontinued and parts are back-ordered beyond three weeks. Repair if the failure is isolated to a serviceable component - bypass damper, water panel assembly, UV bulb socket - and the unit has documented maintenance history. We provide both numbers in writing.
Most single-component sanitizing or UV installations finish in 2-4 hours. Whole-home mold remediation with multiple duct runs typically requires a full day. We schedule with a realistic window and call 30 minutes before arrival - Haven Standard Clause 2: Confirmed Arrival.
The $79 coupon model typically covers a brief vacuum at the register and a visual scan from the access panel - no camera, no containment, no documentation. We’ve opened systems after those visits and found the main trunk line untouched. Our price covers negative-pressure extraction, camera-verified reach of every duct run, and a written photo record. The difference is measurable.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning Round Rock at CleanRun Air Duct Cleaning Round Rock, serving Round Rock and nearby areas.




Before
After
Before
After