Onzone is headquartered in Pleasanton and runs HVAC, refrigeration, and emergency calls across the Tri-Valley, East Bay, and the broader Bay Area. Residential and commercial.
Closer to home means faster dispatch. Our primary residential coverage radius runs from Livermore in the east to Fremont in the south to Walnut Creek in the north.
📞 (650) 698-7979Not on the list? Call (650) 698-7979 and ask. We extend coverage for commercial work and for residential jobs adjacent to our primary radius.
Pleasanton base puts our trucks within 20 minutes of most Tri-Valley addresses during business hours. We give you a real ETA on the phone, not a 4-hour window.
We know the older Eichlers, the 1970s ranch homes, the 2000s Dublin Ranch builds, the Danville custom estates. The systems and the access challenges are different in every neighborhood.
Pleasanton, Dublin, Livermore, San Ramon, and Danville all have their own permit quirks. We pull permits regularly and the inspectors know our work.
