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 Air Duct Cleaning in West Covina: What to Know First
We provide independent Nikro air duct cleaning in West Covina for residential and commercial systems, with most standard homes completed in a single visit. A typical full-system cleaning for a Nikro-equipped West Covina home runs between $495 and $895, and we hand you a written price before a single duct is touched. No per-vent games, no upsell at the door.

This page is for homeowners and property managers in West Covina who own or maintain Nikro air handling systems and want to know exactly what a proper cleaning involves, what it should cost, and how to spot the difference between a real cleaning and a truck-mounted shop vac pretending to be one. If you’d rather just talk it through, call us at (424) 688-1845 and a live person answers.
How Nikro Products Fail – and How We Fix Them
Nikro has built a reputation for heavy-duty HEPA filtration and negative-pressure equipment, and that reputation is earned. But every system has its weak points, and after years of servicing Nikro units across the San Gabriel Valley, we’ve learned exactly where those weak points live. Here’s what we regularly see in West Covina homes:
- The NP Series portable HEPA units get their pre-filters ignored. Nikro’s NP-2 and NP-3 negative-pressure machines are workhorses, but the pre-filter catches the big debris before the HEPA does the fine work. When a pre-filter isn’t changed on schedule, the HEPA clogs faster and the unit loses suction. During a cleaning, we inspect and replace pre-filters as needed, which extends the life of the HEPA filter and keeps airflow honest.
- Older Nikro duct systems show flex-duct sag at the plenum connections. In West Covina’s older tract homes off Azusa Avenue, we routinely find flex duct that has pulled away from the plenum collar. That gap pulls attic air into the supply side, which means whatever we clean is fighting whatever keeps blowing in. We reseal those connections during the cleaning, not as an add-on, because a cleaning that doesn’t address the leak is a cleaning that won’t last.
- Nikro return-air filter racks trap debris that backs up into the return duct. The return side of a Nikro system often runs a deeper filter rack than most homeowners expect. When that rack is overfilled or the wrong filter depth is used, the system pulls harder and the return ducts accumulate more dust and pet hair. We pull the rack, measure it, and tell you the correct filter size and depth before we even start the cleaning.
- Coil-side contamination is common on Nikro systems with high static pressure. Nikro units are often paired with high-efficiency filtration, and when static pressure climbs, dust gets thrown against the coil faster than the blower can push it through. A dirty coil means reduced efficiency and more dust recirculating. Our cleaning includes coil inspection and cleaning when needed, because cleaning ducts while ignoring a fouled coil is like washing the outside of a car and calling it detailed.
- Nikro HEPA exhaust ports accumulate debris that gets reintroduced into the space. During commercial jobs, we see exhaust ports that haven’t been cleaned since install. Loose debris that should have been captured ends up recirculated. We remove and clean the exhaust diffusers as part of the full-system service, then document everything with our camera before and after.
Styles & brands we work with




Our Nikro Air Duct Cleaning Process
When you book a Nikro air duct cleaning with Cardinal Air Duct West Covina, here’s what happens, start to finish:
- 1
You call (424) 688-1845 and get a live person. No voicemail loop. We gather the basics: home size, system type, how many returns, and when you last had the ducts cleaned.
- 2
We quote a written price before scheduling. The price we quote is the price you pay. It includes the full cleaning, the inspection, and any standard sealing we find along the way.
- 3
On the day, we arrive in a trackable window and introduce ourselves by name. Background-checked, uniformed, and carrying a Rotobrush rotary brush system and a Nikro HEPA vacuum for negative-pressure extraction. That means the loosened debris goes straight into the vacuum, not back into your living room.
- 4
We run a video inspection before we touch anything. We show you what’s inside your ducts. Then we clean. Then we show you the after footage. No mystery, no trust exercise.
- 5
We clean the supply ducts, the return ducts, the plenum, and the registers. Every register gets pulled, washed, and reset. The system gets a final negative-pressure pass so loose dust is captured, not released.
- 6
We walk you through the after-video and the invoice. You get a digital receipt payable by link. And every job carries the 365-Day Done Right Promise: if the work isn’t right within 365 days, we return and correct it at no charge.
See the difference
Before
After
Before
After
Before
AfterWhat Nikro Air Duct Cleaning Costs in West Covina
Here’s our honest pricing for Nikro air duct cleaning in West Covina. These are whole-system prices, not per-vent gimmicks:
- Standard single-system home (up to 12 vents): $495 – $695
- Larger single-system home (13 – 20 vents) or two-system home: $695 – $895
- Light commercial Nikro system / multiple returns: $895 – $1,400+ depending on scope and access
- Video inspection (included with every cleaning): $0
- Coil cleaning, if needed: included with full-system cleaning when accessible
What moves the price: number of systems, total vent count, duct length, access difficulty, and whether the coil is reachable from the attic or utility closet. A two-story West Covina home with a rooftop package unit will run higher than a single-story ranch near South Hills. No matter what, the price you’re quoted before the job is the price on the invoice. Call (424) 688-1845 for a free estimate on your specific Nikro system.
Why West Covina Homeowners Call Cardinal Air Duct West Covina for Nikro Work
Here’s the thing: most duct cleaning companies in West Covina run the same truck-mounted vacuum and the same generic script, regardless of what brand of system you actually own. We don’t. Our techs know Nikro equipment because we’ve serviced it for years, from the NP series HEPA units to the duct systems they serve. And when a home has a Lennox, Trane, or Carrier system paired with Nikro filtration, we service those too, so you’re not stuck juggling two companies for one air system.

We’re an independently owned local business under the Relay Home Co. family, founded 2005. Every booking carries The Relay Standard: a live trackable arrival window, before-and-after photo documentation, and a digital invoice payable by link. Our pricing is flat and written before we start. If the work isn’t right within a year, we come back and fix it. That’s the 365-Day Done Right Promise, and it applies to every job.
Clean ducts, straight answers, no surprises on the invoice.
FAQs
No. We are an independent Nikro service provider. We service Nikro systems in West Covina and surrounding areas, but we are not authorized by or affiliated with Nikro. Our equipment includes Nikro HEPA vacuums because we believe in the brand for extraction work, but we operate independently.
No. Regular air duct cleaning is a recommended maintenance practice and does not void a Nikro system warranty. We take care to use non-invasive cleaning methods that don’t damage ducts, liners, or connections, and we document everything with before-and-after video.
A standard single-family home in West Covina takes between 3 and 5 hours, depending on vent count and access. Two-system homes or homes with rooftop units may run longer. We give you a live trackable arrival window through The Relay Standard, so you know when we’re pulling up.
We use OEM Nikro filters when they’re specified for the unit and available. For non-warranty replacement parts, we’ll always tell you if a quality aftermarket option meets or exceeds the original spec and let you decide. No hidden substitutions. We’ll show you the part before it goes in.
Because they charge per vent and then pile on add-ons once the tech is inside. A $99 teaser price almost never stays $99. We quote one flat price for the whole system, written down before we start, and it doesn’t change. If a quote sounds too good to be true, ask whether it includes the return ducts, the plenum, the registers, and the after-video. If it doesn’t, you’re not comparing the same job. Call (424) 688-1845 for an exact quote, it’s free.
Written by Omar Haddad, Owner, Cardinal Air Duct West Covina at Cardinal Air Duct West Covina, serving West Covina and nearby areas.