Irvine, CA business & property owners in need of HVAC or refrigeration design, installation, maintenance, monitoring, repair or retrofits have called RESSAC first for the past 90 years. That’s because we are a third-generation, family owned company that prides itself in exceptional customer support, timely response and quality service. Don’t take our word for it, read our reviews below to learn more.

Local Reviews
for Irvine, CA


Benjamin C.

Benjamin C.

Near Hale Ave, Irvine, CA 92606
David G.

David G.

Winter maintenance for the air conditioning equipment scheduled today for this retailer in Irvine, California. Standard, minor, services provided: all filters changed, equipment inspected and belts replaced. Confirmed no issues to report, PM complete.

Near Fortune Dr, Irvine, CA 92618
Irvine, CA - Winter maintenance for the air conditioning equipment scheduled today for this retailer in Irvine, California. Standard, minor, services provided: all filters changed, equipment inspected and belts replaced. Confirmed no issues to report, PM complete.
Jose G.

Jose G.

Dispatched our Irvine California refrigeration technician to a commercial property to thoroughly clean out the ice machine onsite. Removed all ice from the bin, cleaning both the inside and outside of the unit. Cleaned, descaled the system twice as it was badly scaled. Replaced and dated water filters, and washed the condenser section on the roof. Started up freezing cycled and confirm ice was being created again.

Near Main St, Irvine, CA 92614
Irvine, CA - Dispatched our Irvine California refrigeration technician to a commercial property to thoroughly clean out the ice machine onsite. Removed all ice from the bin, cleaning both the inside and outside of the unit. Cleaned, descaled the system twice as it was badly scaled. Replaced and dated water filters, and washed the condenser section on the roof. Started up freezing cycled and confirm ice was being created again.
Jose G.

Jose G.

Dispatched our Irvine CA area refrigeration technician back to a restaurant for quoted ice machine maintenance. The unit needed a full descaling cleaning and a water filter replacement. Confirmed all operations after completing repairs, system operational again.

Near Main St, Irvine, CA 92614
Tony O.

Tony O.

Approved air conditioning repairs were scheduled today for a commercial customer in Irvine, California. Our technician repaired two Lennox units, replacing a disconnect cover as well as a blower motor and pulley. Unit passed all tests upon completion of repairs, job complete.

Near Jamboree Rd, Irvine, CA 92602
Irvine, CA - Approved air conditioning repairs were scheduled today for a commercial customer in Irvine, California. Our technician repaired two Lennox units, replacing a disconnect cover as well as a blower motor and pulley. Unit passed all tests upon completion of repairs, job complete.
Jose G.

Jose G.

A restaurant in Irvine, California, reported that their ice machine was dripping water. Upon arrival our refrigeration technician found the system iced over with plugged water filter beads. He cleaned the screen. de-iced the unit and purged the water line for temporary operations. Will need to install new water filters ASAP, quoting repairs to customer now.

Near Barranca Pkwy, Irvine, CA 92606
Irvine, CA - A restaurant in Irvine, California, reported that their ice machine was dripping water. Upon arrival our refrigeration technician found the system iced over with plugged water filter beads. He cleaned the screen. de-iced the unit and purged the water line for temporary operations. Will need to install new water filters ASAP, quoting repairs to customer now.
Jose G.

Jose G.

Near Jamboree Rd, Irvine, CA 92602
Doug W.

Doug W.

Our Orange county AC technician returned to a retailer to install carbon filters per their request due to local fires. Old filters were removed and disposed of, new filters installed and all operations confirmed with EMS.

Near Jamboree Rd, Irvine, CA 92602
Doug W.

Doug W.

A business owner in Irvine California reported that the air wasn't working in their office. Dispatched our commercial HVAC tech to the site to inspect. Our technician found the Carrier system frozen at the evaporator coil. After defrosting the coil our tech found the blower section insulation had fallen off into the cabinet. Replaced it, also increased the blower speed. Continued troubleshooting and found the unit low on charge, pinpointed leak and repaired. Unit now supply 55 degree air and no longer freezing.

Near Hale Ave, Irvine, CA 92606
Irvine, CA - A business owner in Irvine California reported that the air wasn't working in their office. Dispatched our commercial HVAC tech to the site to inspect. Our technician found the Carrier system frozen at the evaporator coil. After defrosting the coil our tech found the blower section insulation had fallen off into the cabinet. Replaced it, also increased the blower speed. Continued troubleshooting and found the unit low on charge, pinpointed leak and repaired. Unit now supply 55 degree air and no longer freezing.
Sergio J.

Sergio J.

A restaurant in Irvine CA reported a water leak over their expo area. Upon arrival, checked the AC units around the leak area, found units dry and not leaking. Did find multiple areas around the roof that are cracked and need to be looked at, and repaired, by a roofer. Updated onsite management and main office.

Near Main Street, Irvine, CA 92614
Irvine, CA - A restaurant in Irvine CA reported a water leak over their expo area. Upon arrival, checked the AC units around the leak area, found units dry and not leaking. Did find multiple areas around the roof that are cracked and need to be looked at, and repaired, by a roofer. Updated onsite management and main office.
Sergio J.

Sergio J.

Responded to an urgent cooling request regarding make-up air units and rooftop units at a restaurant in Irvine California. Found the belts had given out on two of the MUA systems, and filters were badly clogged on Trane unit #5. Will need to source parts and quote repairs to customer.

Near Main Street, Irvine, CA 92614
Irvine, CA - Responded to an urgent cooling request regarding make-up air units and rooftop units at a restaurant in Irvine California. Found the belts had given out on two of the MUA systems, and filters were badly clogged on Trane unit #5. Will need to source parts and quote repairs to customer.
Sergio J.

Sergio J.

Our HVAC technician returned to a printing facility in Irvine to inspect their commercial air conditioner. The tech found one of the units with improper thermostat settings, set to run only 1 day per week, which the tech was able to resolve. He also found a second air conditioner improperly wired. Rewired to the thermostat. re-configured and tested. System back up and running again. Note that one other unit is already quoted for existing repairs, and is down.

Near Hale Ave, Irvine, CA 92606
Irvine, CA - Our HVAC technician returned to a printing facility in Irvine to inspect their commercial air conditioner. The tech found one of the units with improper thermostat settings, set to run only 1 day per week, which the tech was able to resolve. He also found a second air conditioner improperly wired. Rewired to the thermostat. re-configured and tested. System back up and running again. Note that one other unit is already quoted for existing repairs, and is down.
Javier G.

Javier G.

Commercial EMS installation quality check at a clothing retailer in Irvine, California. Confirmed HVAC unit startup on their was complete and systems functional. Will need to return after lighting contractor completes their phase of project.

Near Fortune Dr, Irvine, CA 92618
Irvine, CA - Commercial EMS installation quality check at a clothing retailer in Irvine, California. Confirmed HVAC unit startup on their was complete and systems functional. Will need to return after lighting contractor completes their phase of project.
Jeremy H.

Jeremy H.

Near Hale Ave, Irvine, CA 92606
Fabian R.

Fabian R.

Irvine, CA, commercial HVAC technician dispatched to a specialty import store for spring maintenance. The tech changed filters, belts, tested pressures and inspected all equipment. Found Lennox units #1 and #2 low on refrigerant. Will quote for repairs and send to customer.

Near Jamboree Rd, Irvine, CA 92602
Irvine, CA - Irvine, CA, commercial HVAC technician dispatched to a specialty import store for spring maintenance. The tech changed filters, belts, tested pressures and inspected all equipment. Found Lennox units #1 and #2 low on refrigerant. Will quote for repairs and send to customer.