Rotobrush Duct Sealing Nationwide

Rotobrush Duct Sealing in Houston: What to Know First

Rotobrush duct sealing in Houston typically runs $450 – $1,200 depending on how much of your ductwork needs attention, and most jobs wrap up in a single visit. We’re an independent Rotobrush service provider, not a factory arm, so when we quote a job, the price you get on paper is the price you pay. That matters in Houston, where leaky ducts can waste 20 – 30% of the air your AC is fighting to push through the house. If you own a Rotobrush system and your registers are blowing weak, call us at (713) 936-5800. This page is for Houston homeowners who want to know what’s actually wrong, what it costs, and whether it’s worth fixing before they spend a dime.

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How Rotobrush Products Fail – and How We Fix Them

Rotobrush builds solid equipment, but Houston’s heat and humidity push every part harder. Here’s what we see in the field, week after week.

• Air Raptor series power head bearing wear. The Air Raptor line runs a sealed bearing cartridge that, over time, picks up fine duct dust and starts to drag. Owners notice a high whine that fades in and out while the unit runs. We replace the bearing cartridge with a spec-matched aftermarket part rather than ordering factory, which cuts the wait from two weeks to two days. The fix holds because the replacement is sealed against Houston’s humidity, and we test run it before we leave.
• Viper line hose collar leaks at the intake manifold. The Viper’s ribbed hose collar develops hairline cracks after repeated flexing, especially in attics where summer temps hit 140°F. Air pulls in around the crack instead of through the duct, so suction drops and cleaning takes twice as long. We swap the collar and check the manifold seating with a smoke pencil. It’s a $60 – $90 fix that most DIY attempts worsen, because overtightening the clamp is exactly what causes the next crack.
• Rotobrush rotary brush stiffness loss on original brushes. Brushes don’t fail loudly; they just stop grabbing. On the older Rotobrush Classic systems, the nylon bristles flatten after 800 – 1,200 hours of use. The symptom is a clean-looking duct that still has a dust film inside. We replace with a matched-stiffness aftermarket brush, and we’ll show you a before-and-after camera shot from inside your duct so you can actually see the difference.
• Negative pressure drop from clogged pre-filters. This one’s not the machine’s fault; it’s Houston’s. Fine limestone dust and pollen load the pre-filter on any Rotobrush running a HEPA canister. When the filter clogs, suction falls and the brush leaves debris behind. We replace the pre-filter, check the HEPA with a manometer, and log the readings. A $35 filter beats a $600 blower motor replacement, which is what happens if the unit runs choked too long.
• Rattling in the air pump assembly on Air Wolf units. The Air Wolf’s diaphragm pump mounts on rubber isolators that harden and crack after years in an unconditioned Houston garage. The rattle is annoying, but the real issue is that a loose pump stresses the air lines, which eventually split and leak. We re-mount the pump on fresh isolators, lean-check the air fittings, and the unit runs quiet again. Ignore the rattle and you’ll be buying a new pump instead of $40 worth of mounts.

Our Rotobrush Duct Sealing Process

Here’s how a Rotobrush duct sealing job goes at Hollis Air Duct Houston, from the first call to the final walkthrough.

1. 1
   Call and schedule. You call (713) 936-5800, talk to a live person, and pick a window. We arrive inside that window, uniformed and background-checked.
2. 2
   Inspection and diagnosis. We walk the house, map the duct runs, and pinpoint where the leaks are. On Rotobrush systems, that often means checking the collars, the plenum connections, and the return side, which is where Houston homes lose the most air.
3. 3
   Written price, before any work. You get a line-item price in writing. The number doesn’t move at the door. If you don’t like it, you don’t pay for the visit.
4. 4
   Sealing the leaks. We apply water-based duct mastic and UL 181-rated foil tape to every leaky joint, following the trade standard. No shortcuts, no half-sealed plenums. On Rotobrush systems specifically, we also check that the cleaning head access points are properly re-sealed after we’re done.
5. 5
   Airflow test and before-and-after photos. We measure airflow at the registers before and after, and we show you photos of your own ducts. You see the work; you don’t take our word for it.
6. 6
   Walkthrough and written guarantee. We walk you through what we did, hand you the written 365-Day Done Right Promise, and leave the site cleaner than we found it. If anything fails within a year, we come back at no charge. That includes a free second visit, not a negotiated one.

What Rotobrush Duct Sealing Costs in Houston

Here are real numbers for the Houston market, not national charts. A single leaking return plenum seal usually runs $180 – $300. Sealing all accessible duct joints in a 2,000-square-foot single-story home typically lands between $450 and $750. A full system seal on a two-story with a zoned Rotobrush setup runs $800 – $1,200. What moves the price: how many joints and plenums are accessible, whether we’re working in a tight attic with low clearance, and whether any previous sealing attempt, often a poorly applied tape job, needs to be scraped off first. The estimate is free, and the price is written down before we touch anything. Call (713) 936-5800 and you’ll know exactly where you stand.

Why Houston Homeowners Call Hollis Air Duct Houston for Rotobrush Work

Roy Castellanos runs this crew, and he runs it by The Garrison Code: show up inside the window, price it in writing before any work starts, do the job by the book, and leave the site clean. That code is what Houston homeowners get, on every Rotobrush job, every time. The 365-Day Done Right Promise backs it in writing. If a seal fails or a collar leaks again within a year, we’re back at no charge, no fine print. Our techs know Rotobrush units inside and out, and we also service equipment paired with Lennox, Trane, and Carrier systems, so if the issue turns out to be a crossover problem between the Rotobrush and the furnace, we catch it on the same visit. Phones answered by a live person, 24/7. No voicemail loops. No waiting until Monday.

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