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


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.