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 4.6 out of 5 stars based on 5 customer reviews

Great service




Review of RESSAC Climate Control


Very thourough.




Review of RESSAC Climate Control

Sergio arrived shortly after 8:00AM and was done at approximately 9:00AM. Besides looking at failed compressor, he noticed issues with the condenser fans which he explained to me.


Response from RESSAC Climate Control:

Thank you for the feedback on Sergio's visit, Robert.


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 Holly Vista Dr, Pasadena, CA 91105
Sergio J.

Sergio J.

Near Valley St, Pasadena, CA 91105
Ryan C.

Ryan C.

Completed a requested survey in Pasadena, California, for a brand new installation on an older building with no existing HVAC equipment. Surveyed two floors, noted old ductwork for a inoperable heater that will need to be removed. Old furnace has asbestos, will need to subcontract for its removal. Inspected and noted all electrical, roof confirmed in OK condition.

Near E Washington Blvd, Pasadena, CA 91104
Pasadena, CA - Completed a requested survey in Pasadena, California, for a brand new installation on an older building with no existing HVAC equipment. Surveyed two floors, noted old ductwork for a inoperable heater that will need to be removed. Old furnace has asbestos, will need to subcontract for its removal. Inspected and noted all electrical, roof confirmed in OK condition.
Ryan C.

Ryan C.

An office in Pasadena, California, reported an unresponsive thermostat for their AC system. Our technician arrived and inspected unit #4, and found that the disconnect box was off to the unit. Troubleshooted the system and found no issues. Turned disconnect and unit is operational. Spoke with MOD, unable to determine reason for unit being off as no recent technician visits from RESSAC.

Near Valley St, Pasadena, CA 91105
Pasadena, CA - An office in Pasadena, California, reported an unresponsive thermostat for their AC system. Our technician arrived and inspected unit #4, and found that the disconnect box was off to the unit. Troubleshooted the system and found no issues. Turned disconnect and unit is operational. Spoke with MOD, unable to determine reason for unit being off as no recent technician visits from RESSAC.
Jovanny C.

Jovanny C.

Near W Del Mar Blvd, Pasadena, CA 91105
Jovanny C.

Jovanny C.

Maintenance scheduled for our customer's HVAC equipment in Pasadena, California. Standard winter service, including basic inspection and filter change. After completing the inspection, our technician noted a sparking contactor on unit #3 and a failing run capacitor on unit #1. We will quote both needed repairs to the customer. PM complete.

Near W Del Mar Blvd, Pasadena, CA 91105
Pasadena, CA - Maintenance scheduled for our customer's HVAC equipment in Pasadena, California. Standard winter service, including basic inspection and filter change. After completing the inspection, our technician noted a sparking contactor on unit #3 and a failing run capacitor on unit #1. We will quote both needed repairs to the customer. PM complete.
Philip P.

Philip P.

Dispatched our commercial A/C technician to a Pasadena, California retailer for their minor maintenance service. Visual inspection and filter change completed, no errors or mechanical failures. PM complete.

Near W Colorado Blvd, Pasadena, CA 91105
Pasadena, CA - Dispatched our commercial A/C technician to a Pasadena, California retailer for their minor maintenance service. Visual inspection and filter change completed, no errors or mechanical failures. PM complete.
Doug W.

Doug W.

Dispatched our Pasadena, California, technician back to an office park to complete approved work on their air conditioning units. One of their Lennox units had a failed blower assembly. Our technician removed the old assembly, and replaced the motor, capacitor and wheel. After re-installing the blower assembly, our tech also installed three new locking covers over the area thermostats to prevent accidental tampering. Units are up and running again, no more issues to report.

Near E Colorado Blvd, Pasadena, CA 91105
Pasadena, CA - Dispatched our Pasadena, California, technician back to an office park to complete approved work on their air conditioning units. One of their Lennox units had a failed blower assembly. Our technician removed the old assembly, and replaced the motor, capacitor and wheel. After re-installing the blower assembly, our tech also installed three new locking covers over the area thermostats to prevent accidental tampering. Units are up and running again, no more issues to report.
Doug W.

Doug W.

A gym complex in Pasadena, California, requested emergency service on their commercial air conditioners. The units were leaking water and had been iced over. Our technician checked all refrigerant pressures, confirmed they were low on pressure but not on refrigerant. Once the ice had fully melted, the technician found the filters were badly clogged and the return grills were caked. We will need to return with filters and cleaner for the grills. The technician also replaced a rubbed out wire.

Near E Colorado Blvd, Pasadena, CA 91105
Pasadena, CA - A gym complex in Pasadena, California, requested emergency service on their commercial air conditioners. The units were leaking water and had been iced over. Our technician checked all refrigerant pressures, confirmed they were low on pressure but not on refrigerant. Once the ice had fully melted, the technician found the filters were badly clogged and the return grills were caked. We will need to return with filters and cleaner for the grills. The technician also replaced a rubbed out wire.
Jovanny C.

Jovanny C.

Dispatched our A/C maintenance technician to Pasadena, CA, to service a home goods store. All filters were changed and 13 units inspected. Winter checklist completed.

Near E Foothill Blvd, Pasadena, CA 91107
Pasadena, CA - Dispatched our A/C maintenance technician to Pasadena, CA, to service a home goods store. All filters were changed and 13 units inspected. Winter checklist completed.
Ryan C.

Ryan C.

Our Southern California HVAC controls team returned to wrap the installation of new EMS equipment. Troubleshooting with EMS control, our technician removed the CT, reinstalled and finalized programming.

Near S Lake Ave, Pasadena, CA 91101
Pasadena, CA - Our Southern California HVAC controls team returned to wrap the installation of new EMS equipment. Troubleshooting with EMS control, our technician removed the CT, reinstalled and finalized programming.
Jesus G.

Jesus G.

Completed 4th quarter A/C maintenance at an office building in LA County. Seven units PM'ed today, pre-heating season inspection completed, new air filters installed. Found one thermostat onsite with a cracked screen, recommend replacing but it is still semi-functional for now.

Near N Vinedo Ave, Pasadena, CA 91107
Pasadena, CA - Completed 4th quarter A/C maintenance at an office building in LA County. Seven units PM'ed today, pre-heating season inspection completed, new air filters installed. Found one thermostat onsite with a cracked screen, recommend replacing but it is still semi-functional for now.
Jesus G.

Jesus G.

Fall air conditioning maintenance scheduled today at a commercial property in Pasadena California. All systems inspected and tested for winter, all drain lines cleared and filters replaced. All units running well at this time, PM complete.

Near W Del Mar Blvd, Pasadena, CA 91105
Pasadena, CA - Fall air conditioning maintenance scheduled today at a commercial property in Pasadena California. All systems inspected and tested for winter, all drain lines cleared and filters replaced. All units running well at this time, PM complete.
Ryan C.

Ryan C.

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

Sergio J.

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

Sergio J.

Arrived onsite at a commercial property in Pasadena, California, to provide a second opinion assessment of Trane split system. The unit had been diagnosed with a bad compressor. Upon arrival our technician inspected the AC and confirmed that the compressor was indeed faulty, and would also need two driers. Found that the condenser fan motor was bad and had been running backwards. Condenser coil needs to be washed. Will quote necessary repairs.

Near S Lake Ave, Pasadena, CA 91101
Pasadena, CA - Arrived onsite at a commercial property in Pasadena, California, to provide a second opinion assessment of Trane split system. The unit had been diagnosed with a bad compressor. Upon arrival our technician inspected the AC and confirmed that the compressor was indeed faulty, and would also need two driers. Found that the condenser fan motor was bad and had been running backwards. Condenser coil needs to be washed. Will quote necessary repairs.
Sergio J.

Sergio J.

Our customer in Pasadena, Califronia, reported that their Carrier A/C wasn't blowing any cool air. Our technician troubleshooted the system and found the unit in very poor condition. Compressor is grounded, accumulator rusting, and wiring shorted. We have recommended replacement of this unit in the past. Will re-quote replacement again for customer as we do not recommend repairing due to cost at this time.

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.