When a walk-in fails at 2am, every minute on the clock costs you inventory. Onzone runs 24/7 commercial refrigeration service across the Bay Area for restaurants, grocery, and retail.
Walk-in coolers, reach-in freezers, refrigeration line work, condenser racks. EPA-certified handling on every refrigerant we service. Real human on the emergency line, real tech on the way.
We troubleshoot evaporator fans, controls, door gaskets, airflow, refrigerant charge, and compressor operation when box temperatures drift above setpoint.
We diagnose short cycling, dirty condensers, failed thermostats, blocked drains, and fan issues affecting prep tables and display coolers.
We locate leaks, repair damaged copper, pressure test, evacuate, and recharge systems using the correct refrigerant and measured superheat or subcooling.
We check electrical load, contactors, capacitors, winding condition, head pressure, and condenser airflow before recommending repair or replacement.
If your walk-in fails at 2am, the line is answered live. A tech is dispatched immediately — inventory loss is the worst kind of preventable.
All Onzone techs are 608 certified for refrigerant recovery and handling. R-410A, R-404A, R-407A, R-448A — we stock and service them all.
Multi-unit operators get scheduled quarterly PMs at fixed pricing. Catches failure before it turns into a 3am emergency call.
Commercial walk-ins, reach-ins, and rack systems are our focus on the refrigeration side. We don’t service residential refrigerators — for those, your appliance dealer is the right call.
If you’re an active maintenance customer, typically within 2 hours, 24/7. New customers calling the emergency line usually see a tech within a few hours during business hours, or that same evening for after-hours calls.
Yes. We do the load calculation, equipment sizing, and refrigerant line design for new builds and remodels. You’ll get a written scope with permit-ready specs.
