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.
Nikro Duct Sealing in Pasadena: What to Know First
Nikro duct sealing in Pasadena typically runs between $850 and $2,400 depending on how much of your duct system needs attention, and most jobs are completed in a single day. We’re an independent Nikro service provider, not a factory-authorized shop, which means we fix what’s actually wrong rather than what a warranty script tells us to say. If you own a Nikro air scrubber, negative-air machine, or duct cleaning system and you’re losing suction or seeing leaks at the seams, call us at (626) 469-5477 and we’ll give you a written price before any work starts.
This page is for Pasadena homeowners and contractors who run Nikro equipment and need the ductwork sealed properly, not just patched. Roy Castellanos and our crew have worked on Nikro units in homes from Bungalow Heaven to Hastings Ranch, and we’ve seen the same failure patterns repeat for years.
How Nikro Products Fail – and How We Fix Them
- Nikro NS-Series Negative Air Machines: cracked housing gaskets. The NS series uses foam gaskets around the filter access door and the intake collar. After a few years of Pasadena’s dry heat, those gaskets harden and shrink, which lets unfiltered air bypass the HEPA stage. You’ll notice the unit pulling fine but dust still hanging in the air after a cleaning. We replace the gasket set and reseal the housing with a pliable, heat-rated sealant that won’t crack the same way.
- Nikro Suitcase-Style Portable Units: split seams at the blower outlet. These units get moved between jobs constantly, and the seam where the blower outlet meets the housing takes the most flex. Once that seam opens, the machine loses static pressure and won’t hold a filter seal. We disassemble, re-square the housing, apply duct sealing mastic at the seam, and reinforce with mechanical fasteners so it survives the next hundred moves.
- Older Nikro Duct Cleaning Systems: worn cam-lock fittings. The cam-lock connections between the vacuum hose and the machine body wear down over time. When those cams get sloppy, the hose pops loose mid-job and the negative pressure drops to nothing. We replace worn cam-lock components with new matching parts and seal the connection so the hose seats tight every time.
- Filter racks on Nikro HEPA units: bypass gaps. Nikro filter racks are built to tight tolerances new, but repeated filter changes can bend the rack rails slightly. A bent rail leaves a quarter-inch gap that lets dirty air slip around the filter. We straighten the rack, install a fresh gasket, and verify the seal with a smoke pencil before we call the job done.
- Duct sealing collars on Nikro vac trucks and trailer mounts: dried mastic. On larger Nikro systems, the collars where the main duct connects to the collection drum are sealed with mastic at the factory. Pasadena heat bakes that mastic until it flakes off. We clean the old material down to bare metal, reapply a commercial duct sealing mastic rated for negative pressure, and let it cure before testing.
Styles & brands we work with
Our Nikro Duct Sealing Process
- 1
Call and diagnosis. You call (626) 469-5477 and describe the symptom. We ask specific questions about your Nikro model, when the problem started, and what you’ve already tried.
- 2
On-site inspection. We arrive inside the quoted window, uniformed and background-checked. Roy Castellanos or one of our senior techs inspects the unit, finds every leak point, and runs a static pressure reading to document the before-condition.
- 3
Written price. Before we touch anything, you get a written price for the full repair. That price does not move at the door. No surprise line items, no “while we’re in there” upsells.
- 4
Parts decision. We tell you honestly whether the job needs Nikro factory parts or whether a quality aftermarket component will perform the same or better. If a factory part is backordered, we show you the aftermarket option and let you decide.
- 5
Seal and test. We clean the mating surfaces, apply the correct sealant or mastic for your specific failure, and let it cure properly. Then we test with the unit running at full load and verify the seal with a smoke pencil or digital manometer.
- 6
Cleanup and guarantee. We leave the site cleaner than we found it. Every repair is covered in writing 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.
See the difference
Before
After
Before
After
Before
AfterWhat Nikro Duct Sealing Costs in Pasadena
| Service | Typical Price Range |
|---|---|
| Single gasket replacement and housing reseal | $250 – $450 |
| Full housing disassembly, reseal, and reassembly | $600 – $950 |
| Cam-lock fitting replacement and hose sealing | $300 – $550 |
| Complete duct sealing job on a Nikro trailer or truck mount | $1,400 – $2,400 |
What moves the price: how many seams have failed, whether the housing needs straightening, whether factory parts are required, and how much of the old mastic has to be removed before we can reseal. A simple gasket job is on the low end. A trailer mount that’s been baking in the San Gabriel Valley sun for ten years is on the high end. Call (626) 469-5477 for a free estimate and a written price before we start.
Why Pasadena Homeowners Call Hollis Air Duct Pasadena for Nikro Work
Most of the Nikro owners we work with didn’t start out as Nikro owners. They bought a house in Pasadena, discovered the previous owner left a Nikro system in the garage, and now they’re on their third YouTube video trying to figure out why the machine won’t hold suction. That’s where we come in. We’ve cleaned and sealed duct systems in Pasadena for over a decade, and our techs know Nikro equipment the way a mechanic knows a specific engine. If the Nikro unit is beyond saving and you’re weighing repair against replacement, we’ll tell you straight, because the duct work doesn’t lie, and neither do we. We also service Lennox, Trane, and Carrier duct systems, so you’re not left scrambling if your whole setup needs attention, not just the Nikro machine. Every job gets a written price, every repair carries the 365-Day Done Right Promise, and our phones are answered by a live person 24/7.
FAQs
Sealing the housing, gaskets, and duct connections on a Nikro unit does not typically void the manufacturer’s warranty, provided we don’t modify the motor, electrical system, or structural frame. We use sealants and techniques that preserve the unit’s original design, and we document every repair so you have a record if a warranty claim ever comes up.
If the unit holds pressure when you block the intake but leaks when running, you likely need sealing. If the motor is noisy, the bearings are shot, or the electrical system is failing, you’re looking at a rebuild. We test static pressure and give you a written finding, so you’ll know exactly where your Nikro stands before you spend a dollar.
Yes, we source Nikro factory parts through regular supply channels, and most common gaskets, cam-locks, and filter racks are available within a few days. When a factory part is backordered or discontinued, we’ll show you a quality aftermarket equivalent and explain the trade-off in plain English before we proceed.
Most Nikro sealing jobs are scheduled within a week, and urgent commercial setups can usually be seen sooner. Call (626) 469-5477 and talk to a live person, not a voicemail system. We’ll give you a straight answer about our schedule and a written price before any work begins.
Both. If the Nikro unit is leaking, we seal the machine. If the home’s ductwork is leaking, we seal that too. In Pasadena, where summer temperatures push past 100°F, leaky ducts mean cooled air ending up in the attic instead of the living room. We’ll diagnose both systems and give you a single written quote for whatever actually needs work.
If you own Nikro equipment and you’re tired of losing suction, call Hollis Air Duct Pasadena at (626) 469-5477 for a free estimate. We’ll inspect your system, explain what’s wrong in plain English, and give you a written price that doesn’t change. If it’s covered under our 365-Day Done Right Promise and it fails, we fix it free, including the second visit. That’s how we operate in Pasadena, and that’s how we’ve been doing it since 2004.
Written by Roy Castellanos, Owner, Hollis Air Duct Pasadena at Hollis Air Duct Pasadena, serving Pasadena and nearby areas.