
Mission-critical process cooling, low-temperature systems, and industrial refrigeration engineering across Southern California. We deliver 24/7 emergency repair, preventative maintenance, and Title 24 energy-efficient retrofits engineered for zero operational downtime.
Continuous monitoring, redundancy planning, and rapid emergency dispatch to protect high-value manufacturing lines, cold storage, and aerospace assets.
Certified retrofit solutions featuring VFD integration, smart electronic expansion valves, and automated control strategies to slash peak kilowatt demand.
Our team here at PSI Refrigeration comes from years of experience out in the field. We strive to continue to learn new technologies and keep up to date with our customers equipment and service needs.

High-demand food production facilities push refrigeration equipment to its absolute limit with constant door openings, high ambient heat, and aggressive structural wear. We keep your business fully compliant with local health department cold-holding mandates through:
Maintain Medium-Temp Calibration: holding optimal mid-30s temperature ranges to completely prevent food spoilage and pass health inspections.
Energy Management Optimization: Comprehensive maintenance schedules designed to lower daily kilowatt consumption, ensuring your cooling systems comply perfectly with California's aggressive Title 24 energy efficiency requirements.

Refrigeration isn't just for food. We provide specialized environmental climate controls for industrial part manufacturing facilities, aerospace cleanrooms, and chemical storage layouts that rely on strict, uncompromised ambient temperature control. We handle:
Custom Process Cooling Systems: Calibrating complex system metering components, optimizing condenser head pressure controls, and conducting multi-point electronic leak testing.
System Component Redundancy Planning: Routine diagnostic evaluation of parallel rack configurations and heavy commercial condensing units to ensure zero downtime for your manufacturing line.

Large-scale food production and cold-storage logistics require heavy-duty mechanical monitoring to handle massive product thermal loads and continuous low-temperature demands. Our industrial field services include:
Low-Temp Freezer Management: Engineering and troubleshooting heavy-duty mechanical and solid-state defrost timers, checking termination switches, and diagnosing failed electric defrost heaters on systems operating down to -10°F.
Compressor & Liquid-Line Safeguards: Testing oil levels, checking crankcase heaters, monitoring suction line accumulators, and replacing metering devices with filter driers to prevent catastrophic compressor failure due to liquid slugging.

Mechanical failures inside an industrial cold storage unit require an instant response. Our specialized critical response fleet operates 24/7/365 to stabilize complex rack configurations and high-tonnage parallel systems, mitigating catastrophic product loss.

We specialize in retrofitting older industrial systems with variable frequency drives (VFDs), electronic expansion valves, and intelligent control tracking. Our modern thermal optimization services ensure strict alignment with California’s aggressive Title 24 compliance baselines.

Industrial maintenance is built on asset protection, not budget cutbacks. We design customized mechanical agreements that minimize high-overhead operational wear, extend the running lifespan of heavy scroll or screw compressors, and forecast structural component needs before a failure occurs.
Ice accumulation on evaporator coils is typically caused by restricted airflow, clogged drain lines, faulty defrost timer switches, or a low refrigerant charge from a micro-leak. Immediate diagnosis is critical to avoid burning out fan motors or liquid floodback to the compressor.
Compressors usually trip electrical breakers due to severe head pressure from dirty condenser coils, failing run capacitors, electrical phase imbalance, low oil levels, or thermal overload from liquid refrigerant entering the compressor cylinder
Grease, airborne dust, and debris accumulate on condenser fins, preventing proper heat transfer. This drives head pressure and amperage up, spikes monthly utility bills, and significantly shortens the lifespan of heavy scroll and screw compressors.
Key indicators include:
-Box temperatures gradually creeping upward despite continuous compressor runtime.
-Partial icing or frost buildup on only the top rows of the evaporator coil.
-Oily residue along copper joints, service valves, or flare fittings.
-Low suction pressure readings triggering low-pressure safety limit switches.
We offer energy-efficient commercial refrigeration systems that help you save on energy costs while also being eco-friendly. Our systems are designed to consume less energy but ensure maximum output, enabling you to save on energy bills.
Loud buzzing or rattling usually signals an unbalanced condenser/evaporator fan blade, failing motor bearings, loose compressor mounting grommets, or contactor coil chatter. If the noise comes directly from the compressor body, it could indicate internal valve damage or high-pressure liquid refrigerant slugging back into the suction inlet.
PSI Refrigeration Inc. is a fully bonded, licensed, and certified commercial contractor(CA License #1102379, C-38 classification). Our certified service fleet targets high-volume commercial properties, restaurants, ghost kitchens, and facility management networks throughout Los Angeles County, San Fernando Valley, San Gabriel Valley and Orange County.
Copyright © 2026 PSI Refrigeration - All Rights Reserved.
We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.