Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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.
Rotobrush Duct Sealing & Repair: The Hempstead Owner’s Guide
If you own a Rotobrush system and the duct sealing or repair component has failed, we stock most common Rotobrush-compatible replacement parts and complete the full install in Hempstead for between $185 and $475, depending on which component gave out. Most owners discover the failure the same way: the fan runs but suction drops, the hose connection won’t hold a seal, or the rotary brush stops grabbing. We’ll match the part to your exact Rotobrush model, install it, and back the work with our 365-Day Done Right Promise in writing. Call (516) 559-4917 and we’ll confirm the part over the phone before we schedule.
Which Rotobrush Models This Applies To
Rotobrush has produced several product generations over the years, and the part numbers are not always interchangeable between them. The biggest compatibility gotcha we see in Hempstead homes: the older AiR+ series and the newer RotoStorm models use different hose cuff diameters and different brush head mounting collars. A part from one will not seat correctly in the other, even if it looks close at a glance. Before ordering anything, check the metal data plate on the housing. It lists the model and serial. If the plate is worn off, measure the hose cuff opening: the older units typically run 1.75 inches, the newer ones 2 inches.
For duct sealing and repair work specifically, the Rotobrush does not seal ducts itself. What wears out on the Rotobrush side is the hose coupling, the brush drive assembly, and the filter seal around the collection chamber. Those are the parts we replace most often. OEM Rotobrush parts are solid, but quality aftermarket equivalents from Abatement Technologies and Nikro fit many models at a lower price. We carry both and will tell you honestly which one makes sense for your unit and how long you’ll likely keep the machine.
One more note: Hollis Air Duct Hempstead is an independent service provider. We service Rotobrush equipment, but we are not affiliated with the Rotobrush brand. That said, we know these machines well enough to diagnose most failures over the phone.
Styles & brands we work with
Signs Your Rotobrush Duct Sealing & Repair Is Failing
- Suction drops while the fan stays loud. This almost always points to a worn hose coupling or a cracked filter seal. Air is leaking in before it reaches the collection chamber, so the fan spins hard but pulls weak. On Hempstead jobs, we commonly find this on units that have been bounced in and out of trucks for a few seasons.
- The rotary brush stops spinning or spins unevenly. The brush drive assembly on Rotobrush units has a nylon gear that strips after repeated use. When it goes, the brush either stalls or chatters. If you hear a clicking sound while the brush runs, the gear is already gone.
- Dust blows back into the room instead of into the bag. That is a failed seal on the filter housing or a puncture in the collection chamber gasket. The dust you are supposed to be removing ends up back in the Hempstead air you are trying to clean.
- The hose won’t stay seated in the inlet. The locking tabs on the hose cuff wear down until the hose pops loose mid-job. Duct tape is a temporary fix, not a repair. A loose hose means lost suction and a work site that gets dirtier the longer you run.
- Unusual vibration or wobble at the brush head. The brush head mounting collar loosens over time, especially with the older AiR+ series. A wobbling brush is not just inefficient; it can score the inside of ductwork on Hempstead homes with older, thin-gauge metal runs.
Replacement Cost & What’s Included
Here is a straight breakdown of what you should expect to pay for Rotobrush duct sealing and repair work in Hempstead:
- Hose coupling or cuff replacement: $185 to $260 installed. Parts are usually under $90; the rest is labor to remove the old cuff, clean the inlet threads, and seat the new one properly.
- Brush drive assembly replacement: $240 to $375 installed. The nylon gear and drive shaft are the costly parts on this one. We stock these for both the AiR+ and RotoStorm lines.
- Filter seal or gasket replacement: $150 to $220 installed. Small part, but it requires opening the collection chamber and proper re-torquing so the seal holds under negative pressure.
- Full duct sealing service (the ducts themselves, not the machine): $475 to $1,200 depending on home size in Hempstead. We use mastic sealant and foil tape at every accessible joint, then verify with a pressure test. This is the Rotobrush-adjacent service most often paired with equipment repair.
Every one of these prices is written down before we touch the unit. You will know the number before the work starts, and that number does not move at the door. The repair is covered by our 365-Day Done Right Promise: if it fails within a year, we come back and fix it at no charge, including a free second visit. Roy Castellanos and the crew do not believe in charging twice for the same repair.
See the difference
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After
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After
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AfterDIY or Call Us?
Here is the honest split. If your Rotobrush is losing suction, you can safely check two things yourself: the collection bag for tears, and the hose for visible cracks or loose clamps. That is a five-minute inspection that costs you nothing and will rule out the easy fixes. If the bag is intact and the hose is seated but suction is still weak, stop there. Opening the brush drive housing on a Rotobrush involves a spring-loaded tension assembly that can kick back if not handled correctly, and it is not a job for a homeowner without the right tools and the right training to respect it. Roy learned these systems at Los Angeles Trade-Technical College and has been inside Rotobrush units across the New York metro area for the better part of two decades. He will tell you if the fix is a simple part swap or if you are better off retiring the unit. Call (516) 559-4917 and describe what your machine is doing. We will give you a straight answer on the phone, not a sales pitch.
FAQs
On a unit used weekly, the hose coupling and filter seal typically last 18 to 30 months in Hempstead, though the humidity in Long Island summers can degrade rubber seals faster than in drier climates, so some owners see failures closer to 12 to 18 months. The brush drive gear usually lasts 3 to 5 years with regular use. If you use the machine daily for commercial work, cut those numbers roughly in half. Call (516) 559-4917 and we will assess your unit’s age and usage to give you a realistic lifespan for your specific part.
In most cases, no, and we will tell you that rather than sell you a patch job. A cracked hose coupling might hold with adhesive for a week or two, but it will fail under negative pressure. A stripped nylon gear cannot be re-cut. The filter seal can sometimes be cleaned and re-seated, but if the rubber is cracked or compressed flat, replacement is the only repair that lasts. We would rather install a part that holds than charge you twice.
Most Rotobrush part replacements take 45 to 90 minutes on-site, assuming we have the part on the truck. We stock the most common couplings, seals, and drive assemblies for both AiR+ and RotoStorm models. If we need to order a less common part, we will tell you the lead time before we schedule, not after we arrive. For full duct sealing work in a Hempstead home, plan for a half-day to a full day depending on square footage and duct accessibility.
We stock the common parts and can source OEM Rotobrush or quality aftermarket equivalents from Abatement Technologies and Nikro for most models. We also carry parts compatible with Lennox, Trane, and Carrier systems for broader HVAC work. If you have already purchased a part and just need it installed, we can do that too, but we will not warranty a part we did not source. For the full warranty, let us handle the parts and the labor together. Call (516) 559-4917 for a free estimate.
Get Your Rotobrush Duct Sealing & Repair Fixed in Hempstead
If your Rotobrush unit is down or underperforming, do not keep running it. A failing seal or coupling makes the machine work harder, and that shortens the life of the motor you will eventually have to replace too. We have been fixing and maintaining Rotobrush equipment for Hempstead homeowners since 2004, and we carry the parts to get you back to cleaning ducts the same way the pros do. The price is written down before we start, the tech shows up uniformed and background-checked, and the work is covered in writing for a full year under the 365-Day Done Right Promise. Clean ducts, straight answers, that’s the whole job. Call (516) 559-4917 today and speak to a live person about what your Rotobrush is doing. We will diagnose it over the phone and get you scheduled.
Written by Roy Castellanos, Owner, Hollis Air Duct Hempstead at Hollis Air Duct Hempstead, serving Hempstead and nearby areas.