Allergies, recent remodel dust, post-fire residue, pets, or just years of accumulated buildup. Your duct network is the silent middleman pulling all of it into every room. Onzone runs NADCA-protocol duct cleaning across the Bay Area.
Truck-mount HEPA equipment. Every supply and return cleaned. Optional EPA-registered antimicrobial sanitization. Before and after photos at the end of the job.
If dust returns to the registers days after you wipe them, the supply is coming from inside: duct interiors, boots, and return cavities loaded with loose debris.
Remodels and attic work leave a signature in the ductwork: drywall dust, sawdust, and insulation fragments that keep circulating long after the crew is gone.
A musty smell at startup usually lives in dirty returns, a dust-coated blower compartment, or debris holding moisture inside the ducts. Cleaning removes the source, not just the smell.
You should not have to take our word for it. We photograph accessible duct sections before and after, so you can see exactly what came out.
A real person answers day or night, and most repairs get a tech on-site the same day. No-heat and no-cool emergencies jump the queue.
The price we quote is the price you pay. Every job is approved in writing before work starts, so the invoice never surprises you.
Carrier, Lennox, Trane, Mitsubishi, Daikin, and most mini-splits, new or decades old. NATE-certified, and every job is warrantied.
A licensed California C-20 contractor (CSLB #1154419), fully insured, and based in Pleasanton serving the Tri-Valley and Bay Area.
What a fantastic service! I wanted to have a UV bulb installed in my HVAC. Oleg and Tim came by and got it done efficiently, explaining the whole process and showing pictures of the installation after. These guys are pros! Super friendly and easy to talk to as well. Overall, highly satisfied with this experience and would absolutely recommend!
Read on GoogleI had two thermostats and 4 ceiling lamps installed. Staff did a wonderful job installing and making my AC work again. They were hardworking and did a great job. I am very happy with their good service and would definitely call them again when I need any AC/heating work done. They also did a great job installing ceiling lamps.
Read on GoogleOleg did an excellent job with our HVAC system. He was professional, knowledgeable, and very easy to work with. He arrived on time, carefully diagnosed the issue, and explained the repair options in a clear and honest way. The work was completed efficiently and with great attention to detail. Everything was left clean, and the system is now running perfectly. It's clear that Oleg takes pride in his work and genuinely cares about providing quality service. I highly recommend Oleg to anyone looking for a reliable and experienced HVAC specialist. I would not hesitate to hire him again for future heating and air conditioning needs.
Read on GoogleNADCA recommends every 3 to 5 years for a typical home. Move it up if you have had a remodel, pets, smokers, post-fire smoke, a recent rodent problem, or anyone in the house with allergies or asthma.
Most single-family homes take 3 to 5 hours. Larger homes and commercial buildings are quoted by scope. The system stays off while we work, but you can stay in the building.
Yes. We run truck-mounted negative-pressure equipment with HEPA filtration, the NADCA standard. Portable consumer-grade machines cannot pull the static pressure it takes to actually clean the trunk lines.
