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 Duct Repair & Sealing in Round Rock: What to Know First
CleanRun Air Duct Cleaning Round Rock provides independent Aprilaire duct repair and sealing for homeowners in Round Rock and nearby areas. Most Aprilaire duct jobs are completed in a single visit, with a written price delivered before any work begins under Haven Standard Clause 1. We do not quote per-vent teaser rates; we quote one flat price per system after inspecting your ductwork with a camera.
This page is for Aprilaire owners who have noticed uneven temperatures, higher utility bills, or visible duct damage and want a technician who can name the model line in their system without reading the label twice. Call (737) 259-5752 for a free estimate. The camera goes in first. Then we talk.
How Aprilaire Products Fail - and How We Fix Them
- Aprilaire Zoned Comfort Control systems develop leaks at the zone damper seals after 8-12 years in Round Rock’s heat-cycling climate. The constant expansion and contraction of metal ductwork at the damper collar cracks mastic sealant that was applied too thin during original construction. We remove the failed sealant, inspect the damper blade for warping, and reseal with fiber-reinforced mastic rated for the pressure differential Aprilaire zone systems run.
- Aprilaire Model 8144 ventilators connected to flex duct in attics show compression failures where the flex sags across the 140°F+ Round Rock attic peak. The ventilator’s continuous low-speed operation pulls the flex flat at low points, creating a crease that eventually splits. We replace the damaged flex section with properly supported insulated duct and install hanging straps at 4-foot intervals to prevent recurrence.
- Aprilaire whole-home dehumidifier return plenum taps (common on Model 1830 and 1850 installations) leak at the sheet metal transition where the dehumidifier collar meets the main return. The collar was often field-fabricated with too few screws and no gasket. We fabricate a new transition with a closed-cell foam gasket and double-lock seam, then pressure-test the joint before closing the plenum.
- Aprilaire Media Air Cleaner cabinets (Model 2210, 2410) mounted in return plenums stress the surrounding ductwork when filters are changed roughly. The cabinet’s sheet metal flange bends, breaking the seal between cabinet and plenum. We straighten or replace the flange, reseal with UL-181 approved tape and mastic, and check that the filter track still slides freely without forcing.
- Aprilaire steam humidifier supply taps (Model 800 series) leak where the 6-inch round supply duct connects to the humidifier’s integral collar. The high-temperature steam cycle degrades standard duct tape and causes the collar to loosen from thermal cycling. We replace the connection with a high-temperature silicone sealant and mechanical clamp system, and we verify the duct insulation is rated for the 212°F peak temperature these units produce.
Our Aprilaire Duct Repair & Sealing Process

- 1
Camera inspection of every main trunk line. We run a borescope through the supply and return plenums to document existing damage, debris load, and leak points before quoting. You see what we see.
- 2
Written price delivered on site. Haven Standard Clause 1: one flat price per system, agreed in writing before any panel comes off. No per-vent math, no surprises.
- 3
Parts decision: OEM vs. quality aftermarket. For Aprilaire-specific components like zone dampers and dehumidifier collars, we use OEM when the warranty is still active. For generic duct materials, we source from Abatement Technologies or Guardsman - brands you can verify independently.
- 4
Repair and seal with documentation. Every duct run is photographed before and after. Mastic cure times are observed. Joints are pressure-tested where accessible.
- 5
System verification and photo record delivery. We measure static pressure before and after, deliver your documented photo record, and back the work with the 365-Day Done Right Promise in writing.
- 6
Cleanup and final walkthrough. We leave the work area cleaner than we found it. Haven Standard Clause 3: Verified Crews, identified by name, background-checked, uniformed.
Before
AfterWhat Aprilaire Duct Repair & Sealing Costs in Round Rock
| Scenario | Typical Range |
|---|---|
| Single zone damper reseal (Aprilaire Zoned Comfort) | $340 - $520 |
| Flex duct replacement, ventilator connection (Aprilaire 8144) | $280 - $440 |
| Return plenum transition rebuild (dehumidifier tap) | $420 - $680 |
| Media cabinet flange repair and reseal | $260 - $380 |
| Full system seal with mastic (typical 2,000 sq ft home) | $1,200 - $1,800 |
What moves the price: accessibility (crawl space vs. attic), extent of existing damage found during camera inspection, and whether OEM Aprilaire parts are required to preserve warranty coverage. Cedar pollen buildup common in Round Rock’s Stone Oak Ranch and Teravista neighborhoods can accelerate corrosion at metal joints, adding prep time. Every estimate is free and includes the camera inspection. Call (737) 259-5752 for an exact quote.
Why Round Rock Homeowners Call CleanRun Air Duct Cleaning Round Rock for Aprilaire Work

We’ve served Round Rock since 2013, completing over 52,000 jobs with a written price before work started and a documented photo record when we left. Tomas Reyes and our crew know Aprilaire’s product line from hands-on work, not catalog browsing - we can tell you why a Model 1850 dehumidifier tap fails differently than a Carrier or Trane equivalent because we’ve repaired all three in Round Rock attics.
Our 365-Day Done Right Promise is backed in writing on every job, not just stated in marketing copy. If the seal fails or the repair doesn’t hold, we make it right. We also service Lennox, Trane, and Carrier systems, so we’re not guessing when your Aprilaire interfaces with another brand’s equipment. Free Second Opinion on any written estimate: bring a competitor’s quote, and we’ll put our number next to it.
FAQs
No, if the work is performed by a qualified technician using OEM-specified materials and methods. As an independent Aprilaire service provider, we follow manufacturer installation guidelines for sealants, fasteners, and pressure ratings. We document our process so you have a record if warranty questions arise. Call (737) 259-5752 if you need warranty documentation for your specific model.
Replacement is usually only necessary when flex duct is crushed beyond recovery or metal duct has rusted through at multiple points. Most Aprilaire systems we inspect in Round Rock need targeted sealing at known failure points - zone dampers, dehumidifier taps, ventilator connections - not wholesale replacement. The camera inspection shows which category you’re in before any price is discussed.
Yes. We stock common Aprilaire zone dampers, collar assemblies, and gasket kits for same-day repair. Specialty items for older Model 8126 ventilators or discontinued zone panels may require 24-48 hours. We tell you the parts status before quoting, not after we’ve started.
Every 3-5 years in Round Rock’s climate, or sooner if you notice uneven room temperatures, dust accumulation at registers, or humidity that the dehumidifier can’t pull down. Homes in newer developments like Teravista with tighter envelopes often pressurize small leaks into larger problems faster than older construction.
Your documented photo record shows every duct run before and after, plus any pressure test readings we took. This is standard on every CleanRun visit, not an add-on. Haven Standard Clause 1 also gives you the written scope and price - if it’s not in writing, it’s not part of the job.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning Round Rock at CleanRun Air Duct Cleaning Round Rock, serving Round Rock and nearby areas.




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