San Luis Obispo’s Commercial Refrigeration & AC Experts

San Luis Obispo, CA business & property owners in need of HVAC, control system or refrigeration repair, design, installation, maintenance, monitoring, 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 San Luis Obispo, CA

RESSAC Climate Control Rated 5.0 out of 5 stars based on 3 customer reviews

Great Customer Service




Review of RESSAC Climate Control


Response from RESSAC Climate Control:

We appreciate the feedback, Stephanie, thank you for reviewing Jared's service.


Great Customer Service




Review of RESSAC Climate Control

Jarred was very professional and knowledgeable. Thank you for a wonderful service visit.


Response from RESSAC Climate Control:

Hi Stephanie, thank you so much for the lovely feedback! Glad to hear that the maintenance went well and that you're happy with Jarred's services.


Awesome service as always!




Review of RESSAC Climate Control


Response from RESSAC Climate Control:

Glad to hear Cesar!


Jarred S.

Jarred S.

Dispatched our commercial HVAC technician to a warehouse in San Luis Obispo county to complete approved thermostat repairs. The site was scheduled to have two new programmable thermostats installed. After installing both thermostats, confirming programming was set as instructed to 6am-7pm cooling and heating, our tech checked both units for operation. No items to report at this time, job complete.

Near Pacific St, San Luis Obispo, CA 93401
San Luis Obispo, CA - Dispatched our commercial HVAC technician to a warehouse in San Luis Obispo county to complete approved thermostat repairs. The site was scheduled to have two new programmable thermostats installed. After installing both thermostats, confirming programming was set as instructed to 6am-7pm cooling and heating, our tech checked both units for operation. No items to report at this time, job complete.
Jesus G.

Jesus G.

A shipping facility servicing San Luis Obispo County reported trouble with their thermostats not holding proper scheduling. The technician found three old thermostats, one he was able to program properly but the other two are two old and non-programmable. Will need to replace the two oldest thermostats. The customer also requested a quote for replacement of their three commercial HVAC systems, as they are old. Will provide both the thermostat and unit replacement quotes to the customer.

Near Pacific St, San Luis Obispo, CA 93401
San Luis Obispo, CA - A shipping facility servicing San Luis Obispo County reported trouble with their thermostats not holding proper scheduling. The technician found three old thermostats, one he was able to program properly but the other two are two old and non-programmable. Will need to replace the two oldest thermostats. The customer also requested a quote for replacement of their three commercial HVAC systems, as they are old. Will provide both the thermostat and unit replacement quotes to the customer.
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Air conditioning maintenance scheduled for a customer's commercial units in San Luis Obispo California. All units were inspected and pre-summer checklist completed. Filters swapped, drain lines cleared. No issues onsite, units operating normally.

Near S Higuera St, San Luis Obispo, CA 93401
San Luis Obispo, CA - Air conditioning maintenance scheduled for a customer's commercial units in San Luis Obispo California. All units were inspected and pre-summer checklist completed. Filters swapped, drain lines cleared. No issues onsite, units operating normally.
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Our commercial HVAC technician performed the major pre-summer maintenance at an imports store in San Luis Obispo CA. All filters were replaced, pressures and amperages checked, checklist completed. Noted that return grills are starting to get dirty, will recommend cleaning on next PM. Found the #2 Carrier unit down, unable to resolve with basic inspection. Will quote to return and trace possible electrical problem. PM complete.

Near Madonna Rd, San Luis Obispo, CA 93405
San Luis Obispo, CA - Our commercial HVAC technician performed the major pre-summer maintenance at an imports store in San Luis Obispo CA. All filters were replaced, pressures and amperages checked, checklist completed. Noted that return grills are starting to get dirty, will recommend cleaning on next PM. Found the #2 Carrier unit down, unable to resolve with basic inspection. Will quote to return and trace possible electrical problem. PM complete.
Jarred S.

Jarred S.

Our HVAC technician returned to a home goods store to repair their commercial Lennox unit. The system had bad bearings that needed to be replaced. After making repairs and adjusting pulley and belt alignments, the tech tested all operations. Confirmed unit is working normally again, job complete.

Near Madonna Rd, San Luis Obispo, CA 93405
San Luis Obispo, CA - Our HVAC technician returned to a home goods store to repair their commercial Lennox unit. The system had bad bearings that needed to be replaced. After making repairs and adjusting pulley and belt alignments, the tech tested all operations. Confirmed unit is working normally again, job complete.
Jarred S.

Jarred S.

Dispatched our commercial HVAC technician out to San Luis Obispo California to perform spring maintenance. The site has multiple air conditioners, including 7 mini-splits. Our tech changed filters on all units, performing spring testing and inspection on all equipment. Brushed off coils and checked belts, took photos of work completed. There are two units with aging fan motors, brittle wiring and cracked cases. Will quote for recommended repairs. PM complete.

Near Pacific St, San Luis Obispo, CA 93401
San Luis Obispo, CA - Dispatched our commercial HVAC technician out to San Luis Obispo California to perform spring maintenance. The site has multiple air conditioners, including 7 mini-splits. Our tech changed filters on all units, performing spring testing and inspection on all equipment. Brushed off coils and checked belts, took photos of work completed. There are two units with aging fan motors, brittle wiring and cracked cases. Will quote for recommended repairs. PM complete.
Jarred S.

Jarred S.

Dispatched our commercial HVAC technician back to a customer in San Luis Obispo California to complete repairs. Site had reported a noisy unit near the back left of the store, and the technician had found #5 with a bad blower motor wheel that was scored and off-balance. While taking apart the blower to repair, the technician found that the wrong sized wheel had been shipped. Will take old damaged wheel to parts house to make sure correct wheel is provided, will return.

Near Madonna Rd, San Luis Obispo, CA 93405
San Luis Obispo, CA - Dispatched our commercial HVAC technician back to a customer in San Luis Obispo California to complete repairs. Site had reported a noisy unit near the back left of the store, and the technician had found #5 with a bad blower motor wheel that was scored and off-balance. While taking apart the blower to repair, the technician found that the wrong sized wheel had been shipped. Will take old damaged wheel to parts house to make sure correct wheel is provided, will return.
Jarred S.

Jarred S.

Our commercial HVAC technician was dispatched to a shipping warehouse in San Luis Obispo CA to perform routine spring maintenance. All RTUS and mini-split systems were inspected, filters changed and units tested. All equipment is operational at this time, PM complete.

Near Monterey St, San Luis Obispo, CA 93401
San Luis Obispo, CA - Our commercial HVAC technician was dispatched to a shipping warehouse in San Luis Obispo CA to perform routine spring maintenance. All RTUS and mini-split systems were inspected, filters changed and units tested. All equipment is operational at this time, PM complete.
Franco M.

Franco M.

Winter HVAC maintenance scheduled at a bank in San Luis Obispo, California. Standard basic PM with a filter change, drain and components inspection. All units tested normal, no issues to report. PM complete.

Near Broad St, San Luis Obispo, CA 93401
San Luis Obispo, CA - Winter HVAC maintenance scheduled at a bank in San Luis Obispo, California. Standard basic PM with a filter change, drain and components inspection. All units tested normal, no issues to report. PM complete.
Dan J.

Dan J.

Hvac pm.

Near Monterey St, San Luis Obispo, CA 93401
Dan J.

Dan J.

RESSAC HVAC technician arrived at bank in San Luis Obispo to perform standard 180 maintenance on six York/Trane Package Units. Technician checked all unit's belts, changed filters , and noted that none of the units were defective. Units were all restored to proper operation.

Near Broad St, San Luis Obispo, CA 93401