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


Javier G.

Javier G.

EMS installation quality check at a clothing retailer in Irvine, California. Confirmed unit startup 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 - EMS installation quality check at a clothing retailer in Irvine, California. Confirmed unit startup 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, a/c 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, a/c 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.