Pasadena, 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 Pasadena, CA

RESSAC Climate Control Rated 4.7 out of 5 stars based on 3 customer reviews

Very good service and competitive price




Review of RESSAC Climate Control

We definitely will continue to use RESSAC for maintenance and repairs.


Response from RESSAC Climate Control:

Thank you for the positive review, Robert. We look forward to providing quality service to you on future visits!


Great Service




Review of RESSAC Climate Control

RESSAC's follow through and professional service is very much appreciated.


all good, nice guy, very helpful




Review of RESSAC Climate Control


Response from RESSAC Climate Control:

Thanks for taking the time to give us feedback Stephen!


Sergio J.

Sergio J.

Near E Colorado Blvd, Pasadena, CA 91106
Ryan C.

Ryan C.

Dispatched our local technician to a beauty store in Pasadena, California, for their major fall maintenance. After changing filters and completing full heating season inspections, all drain lines were cleared to prevent leaks. PM complete.

Near E Foothill Blvd, Pasadena, CA 91107
Ryan C.

Ryan C.

Preventative maintenance scheduled for a commercial property in LA County today. All Lennox air conditioners onsite were given a full fall inspection, including air filter changes, belt replacements, and heating tuneup and checks. All units operational, will be reporting minor issues found on several units with pitted contactors. PM complete.

Near E Foothill Blvd, Pasadena, CA 91107
Pasadena, CA - Preventative maintenance scheduled for a commercial property in LA County today. All Lennox air conditioners onsite were given a full fall inspection, including air filter changes, belt replacements, and heating tuneup and checks. All units operational, will be reporting minor issues found on several units with pitted contactors. PM complete.
Benjamin C.

Benjamin C.

A retailer on Colorado Blvd in Pasadena, California, reported a water leak coming from the ceiling. Upon arrival, our technician found the chilled water return line leaking from a screw. After isolating the line, the tech found that the stem was cracked. As it was not in use, the technician replaced it with a hex cap and sealed the opening. Opened up the isolation valves and verified that the leak was resolved. Cleaned up area and disposed of water buckets. Job complete.

Near E Colorado Blvd, Pasadena, CA 91129
Pasadena, CA - A retailer on Colorado Blvd in Pasadena, California, reported a water leak coming from the ceiling. Upon arrival, our technician found the chilled water return line leaking from a screw. After isolating the line, the tech found that the stem was cracked. As it was not in use, the technician replaced it with a hex cap and sealed the opening. Opened up the isolation valves and verified that the leak was resolved. Cleaned up area and disposed of water buckets. Job complete.
Benjamin C.

Benjamin C.

Near E Colorado Blvd, Pasadena, CA 91105
Sergio J.

Sergio J.

Dispatched our Pasadena California area technician to a coffee shop to complete approved HVAC repairs. Their split York system needed the capacitor replaced. After completing approved work, our technician found the commercial unit was low on refrigerant. Added dye to the system, will need to return once dye has passed through and continue leak searching.

Near E Colorado Blvd, Pasadena, CA 91105
Pasadena, CA - Dispatched our Pasadena California area technician to a coffee shop to complete approved HVAC repairs. Their split York system needed the capacitor replaced. After completing approved work, our technician found the commercial unit was low on refrigerant. Added dye to the system, will need to return once dye has passed through and continue leak searching.
Jovanny C.

Jovanny C.

Air conditioning maintenance scheduled for an office building in Pasadena California. Summer service, all filters swapped out, equipment checked and confirmed operational. Did note that the condenser coils and outside air screens are dirty and should be washed. Will quote for additional work.

Near Valley St, Pasadena, CA 91105
Pasadena, CA - Air conditioning maintenance scheduled for an office building in Pasadena California. Summer service, all filters swapped out, equipment checked and confirmed operational. Did note that the condenser coils and outside air screens are dirty and should be washed. Will quote for additional work.
Jovanny C.

Jovanny C.

Air conditioning maintenance scheduled for an office building in Pasadena California. Summer service, all filters swapped out, equipment checked for condition. Found a main drain line had broken, was able to repair and get it draining normally again today.

Near Valley St, Pasadena, CA 91105
Pasadena, CA - Air conditioning maintenance scheduled for an office building in Pasadena California. Summer service, all filters swapped out, equipment checked for condition. Found a main drain line had broken, was able to repair and get it draining normally again today.
Jovanny C.

Jovanny C.

Air conditioning maintenance scheduled for an office building in Pasadena California. Summer service, all filters swapped out, equipment checked and confirmed operational.

Near Valley St, Pasadena, CA 91105
Pasadena, CA - Air conditioning maintenance scheduled for an office building in Pasadena California. Summer service, all filters swapped out, equipment checked and confirmed operational.
Jovanny C.

Jovanny C.

Near W Colorado Blvd, Pasadena, CA 91105
Sergio J.

Sergio J.

Near E Colorado Blvd, Pasadena, CA 91129
Sergio J.

Sergio J.

Returned to a retailer on Colorado Blvd in Pasadena, CA, to work with the maintenance crew on chiller water temperature. Property management was in charge of the water temperature, and our technician walked through the current issues our store was experiencing. Despite outside temperatures, property had only 1 out of 4 chillers running, with a 44 degree water temp. Maintenance agreed to try some minor temperature adjustments to assist our store with the humidity/heat. Our tech also spoke to the store, advised them that keep their front door opens all day is not best practice and can reduce cooling efficiency. Measured all space temps to report, will monitor situation and check in with mall management after adjustments to water temp have been made.

Near E Colorado Blvd, Pasadena, CA 91129
Pasadena, CA - Returned to a retailer on Colorado Blvd in Pasadena, CA, to work with the maintenance crew on chiller water temperature. Property management was in charge of the water temperature, and our technician walked through the current issues our store was experiencing. Despite outside temperatures, property had only 1 out of 4 chillers running, with a 44 degree water temp. Maintenance agreed to try some minor temperature adjustments to assist our store with the humidity/heat. Our tech also spoke to the store, advised them that keep their front door opens all day is not best practice and can reduce cooling efficiency. Measured all space temps to report, will monitor situation and check in with mall management after adjustments to water temp have been made.
Doug W.

Doug W.

Quoted air conditioning repairs were scheduled today at a commercial customer in Pasadena California. Our technician replaced the freeze stat safety switch for the #7 Lennox system. Cycled and tested unit after making repairs, and checked out with EMS to confirm no more alarms onsite. Job complete.

Near E Foothill Blvd, Pasadena, CA 91107
Pasadena, CA - Quoted air conditioning repairs were scheduled today at a commercial customer in Pasadena California. Our technician replaced the freeze stat safety switch for the #7 Lennox system. Cycled and tested unit after making repairs, and checked out with EMS to confirm no more alarms onsite. Job complete.
Doug W.

Doug W.

Dispatched our Pasadena California refrigeration technician to a commercial customer with a non-operational ice machine. Upon arrival, found their main kitchen ice machine with a locked dispenser motor, clogged ice bin drain, and missing screws on the cabinet cover. Shut the unit down to prevent leaking, will source and quote necessary parts to make repairs.

Near S Lake Ave, Pasadena, CA 91101
Pasadena, CA - Dispatched our Pasadena California refrigeration technician to a commercial customer with a non-operational ice machine. Upon arrival, found their main kitchen ice machine with a locked dispenser motor, clogged ice bin drain, and missing screws on the cabinet cover. Shut the unit down to prevent leaking, will source and quote necessary parts to make repairs.
Doug W.

Doug W.

Responded to an emergency AC call at a health store with a unit in communication loss. Upon arrival and after completing troubleshooting, our technician found that the commercial Carrier unit had blown fuses and was low on refrigerant. Wires had come off of the condenser fan motor relay and had to be reconnected. Will need to quote a return visit to perform a leak search, repair, and a coil washing. Unit is working partially at this time, will quote the return.

Near E Foothill Blvd, Pasadena, CA 91107
Pasadena, CA - Responded to an emergency AC call at a health store with a unit in communication loss. Upon arrival and after completing troubleshooting, our technician found that the commercial Carrier unit had blown fuses and was low on refrigerant. Wires had come off of the condenser fan motor relay and had to be reconnected. Will need to quote a return visit to perform a leak search, repair, and a coil washing. Unit is working partially at this time, will quote the return.
Sergio J.

Sergio J.

A loan store in Pasadena California called in to report their AC unit was no longer cooling. Our technician found the commercial BDP split system with a tripped circuit breaker. After inspecting all electrical components, the tech traced the problem to a shorted wire that he replaced. Reset breaker and unit is functional again with a 58 degree supply. This is an older unit, approaching 30 years. Will send a replacement recommendation to the customer as well, job complete and site cooling at this time.

Near E Colorado Blvd, Pasadena, CA 91106
Pasadena, CA - A loan store in Pasadena California called in to report their AC unit was no longer cooling. Our technician found the commercial BDP split system with a tripped circuit breaker. After inspecting all electrical components, the tech traced the problem to a shorted wire that he replaced. Reset breaker and unit is functional again with a 58 degree supply. This is an older unit, approaching 30 years. Will send a replacement recommendation to the customer as well, job complete and site cooling at this time.
Franco M.

Franco M.

Our Pasadena California area technicians were onsite for multiple HVAC repairs at a commercial building. Including the replacement of damaged ductwork, repairing electrical that was damaged during a break-in onsite, and re-blocking old drain line blocks that needed to be replaced. Completed most of the quoted repair work today, will need to return to finish the ductwork run. Customer aware of status, scheduling for following week with customer.

Near Valley St, Pasadena, CA 91105
Pasadena, CA - Our Pasadena California area technicians were onsite for multiple HVAC repairs at a commercial building. Including the replacement of damaged ductwork, repairing electrical that was damaged during a break-in onsite, and re-blocking old drain line blocks that needed to be replaced. Completed most of the quoted repair work today, will need to return to finish the ductwork run. Customer aware of status, scheduling for following week with customer.
Sergio J.

Sergio J.

Dispatched our LA county commercial HVAC technician back to a brand clothing store to complete approved repairs. The site's #2 Lennox air conditioner had a failed control board that needed replacing. Upon arrival, our tech removed and replaced the faulty circuit board, tested and ran the unit. System providing a 20 degree temperature split. Working at capacity now.

Near E Foothill Blvd, Pasadena, CA 91107
Pasadena, CA - Dispatched our LA county commercial HVAC technician back to a brand clothing store to complete approved repairs. The site's #2 Lennox air conditioner had a failed control board that needed replacing. Upon arrival, our tech removed and replaced the faulty circuit board, tested and ran the unit. System providing a 20 degree temperature split. Working at capacity now.
Michael M.

Michael M.

Our local technician arrived at a home goods store in Pasadena, California, to inspect one of their commercial air conditioners that was reading high supply temperatures. Tech diagnosed unit #2 with a faulty TXV that would not open. Will need to replace TXV and filter drier, and inspect compressor after making repairs. Compressor possibly damaged, but is not over-amping and windings are in good shape. Quote to follow.

Near E Foothill Blvd, Pasadena, CA 91107
Pasadena, CA - Our local technician arrived at a home goods store in Pasadena, California, to inspect one of their commercial air conditioners that was reading high supply temperatures. Tech diagnosed unit #2 with a faulty TXV that would not open. Will need to replace TXV and filter drier, and inspect compressor after making repairs. Compressor possibly damaged, but is not over-amping and windings are in good shape. Quote to follow.
Sergio J.

Sergio J.

Near S Lake Ave, Pasadena, CA 91101
Sergio J.

Sergio J.

Near S Lake Ave, Pasadena, CA 91101
Sergio J.

Sergio J.

Our senior commercial AC tech arrived at a cell phone store in Pasadena to investigate a new ICP split system not working as expected. Found a leaky schraeder valve that he was able to tighten and resolve. Will return and complete a full leak search on the line-set to confirm to more leaks in system.

Near S Lake Ave, Pasadena, CA 91101
Pasadena, CA - Our senior commercial AC tech arrived at a cell phone store in Pasadena to investigate a new ICP split system not working as expected. Found a leaky schraeder valve that he was able to tighten and resolve. Will return and complete a full leak search on the line-set to confirm to more leaks in system.
Kevin S.

Kevin S.

Arrived to location and found unit #2 not running. Found bad electrical connection at EMS board for stage 1 cooling. Tightened all connections, tested heating and cooling unit working at this time confirmed operation with Phoenix and completed CWV form repair complete.

Near E Foothill Blvd, Pasadena, CA 91107
Kevin S.

Kevin S.

Dispatched our Pasadena, CA, AC technician to a commercial building in response to an emergency request. Found Trane #2 with a bad electrical connection at EMS board for the first stage cooling. Tightened all connections, tested and cycled unit again. Issues resolved, confirmed operations with EMS.

Near E Foothill Blvd, Pasadena, CA 91107
Pasadena, CA - Dispatched our Pasadena, CA, AC technician to a commercial building in response to an emergency request. Found Trane #2 with a bad electrical connection at EMS board for the first stage cooling. Tightened all connections, tested and cycled unit again. Issues resolved, confirmed operations with EMS.
Kevin S.

Kevin S.

An office in Pasadena, California was scheduled for standard minor A/C maintenance today. All filters were replaced on their commercial air conditioners. Tech inspected all motors, electrical and coils, tested heat and cooling. Found Carrier unit #3 with a defective transformer and weak capacitors. Only unit down, all other systems running. Will quote needed repairs to the customer.

Near W Del Mar Blvd, Pasadena, CA 91105
Pasadena, CA - An office in Pasadena, California was scheduled for standard minor A/C maintenance today. All filters were replaced on their commercial air conditioners. Tech inspected all motors, electrical and coils, tested heat and cooling. Found Carrier unit #3 with a defective transformer and weak capacitors. Only unit down, all other systems running. Will quote needed repairs to the customer.