Your walk-in can't wait until Monday
Commercial Air and Refrigeration keeps restaurants, grocers, and convenience stores across LA County running — walk-in coolers, ice machines, rooftop HVAC, and everything in between, fixed by licensed technicians who show up when they say they will.
Trusted by restaurants, grocers, and convenience chains across the San Gabriel Valley
Commercial refrigeration & HVAC, priced by the job
Every job is priced up front — no packages, no hourly guesswork. Bigger installs get a free on-site walkthrough before we lock in a number.
Commercial HVAC Tune-Up
Full system check on your rooftop or split units — coils, refrigerant charge, filters, belts, and controls — before summer or a health inspection catches you off guard.
Walk-In Cooler & Freezer Repair
Warm box, iced-up evaporator, short-cycling compressor — diagnosed and repaired on-site by a technician who works on commercial boxes daily, not just residential fridges.
Commercial Ice Machine Repair
Low ice production, off-tasting ice, or a machine that's stopped cycling entirely — cleaned, diagnosed, and repaired so it's back to full output the same day.
Rooftop HVAC Unit Repair
No cooling, tripping breakers, or strange noise from the RTU — inspected and repaired by a tech who's already comfortable on your roof, not learning the unit as they go.
Refrigerant Leak Detection & Repair
EPA Section 608-compliant leak search, repair, and recharge — with the documentation you need on file if your system falls under federal leak-rate reporting.
After-Hours Emergency Service Call
A dead walk-in at 11pm on a Friday doesn't wait for business hours. Our on-call line routes straight to a technician, not an answering service.
Preventive Maintenance Visit
Quarterly inspection of coolers, freezers, ice machines and HVAC before something fails on a Saturday rush. Priority scheduling for anyone on a standing PM visit.
Compressor Replacement
A failed compressor on a walk-in or reach-in doesn't mean a new box — we source the right replacement, swap it, and recommission the system to spec.
New Refrigeration System Installation
New reach-in, prep-table, or condensing unit installed and commissioned to code, with startup readings documented before we hand it over.
Walk-In Cooler/Freezer Build-Out & Installation
Full box build-out for a new kitchen or a replacement unit — panels, refrigeration package, electrical coordination, and health-code-ready finishing.
Job doesn't match the list, or need a quote for something bigger? Call for a free walkthrough.
From the first call to the final test
Call or request service
Tell us what's down and where — a walk-in, an RTU, an ice machine. We ask a few questions to route the right technician.
Same business dayTechnician dispatched
A licensed, EPA-certified tech is routed to your location — often same-day, and within 2 hours for emergencies.
Same-day or 2-hour emergencyOn-site diagnosis & quote
The tech diagnoses the issue on-site and gives you a price before starting any repair work.
Same visitRepair or install completed
Work is completed to code, the system is tested under load, and readings are checked before we call it done.
Per job scopeFollow-up & documentation
You get a written service report for your records, plus a PM reminder if your equipment is due for another look.
Before we leave7-day service guarantee — not fixed right? We come back at no charge.
If a repair we performed isn't holding within 7 days, call us and a technician returns to make it right, at no additional cost.
How we compare
Frequently asked questions
Fifteen years keeping LA County's kitchens cold
One van, one technician
Derek Zobrist starts Commercial Air and Refrigeration out of Monterey Park with a single service van, focused on independent restaurants that a bigger contractor wouldn't prioritize.
EPA certification & full HVAC service
The crew grows to include EPA Section 608-certified refrigerant technicians and expands from refrigeration-only into full commercial HVAC repair.
Faster response across LA County
A second dispatch base cuts average response time to under two hours for most of the San Gabriel Valley and greater LA County service area.
2,400 service calls and counting
We add a dedicated 24/7 emergency line, because a warm walk-in on a Saturday night can't wait for Monday.
Derek Zobrist
"I still take emergency calls myself."
Ana Reyes
"I make sure the right tech shows up first."
Miguel Ortiz
"Compressor jobs are my specialty."
What LA County businesses say
"Our walk-in died on a Friday night with a full delivery inside. They had someone here in under an hour and we didn't lose a thing."
"We put all four of our stores on their quarterly PM plan. Breakdowns dropped noticeably in the first year."
"They quoted the compressor swap on the spot and stuck to the number, even when the job ran a little longer than planned."
"Our rooftop unit had been misdiagnosed twice by other companies. Their tech found the actual issue in twenty minutes."