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.

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.
Sergio J.

Sergio J.

Dispatched our Pasadena, California a/c technician to a cell phone provider to investigate a no-heat complaint. Upon inspection, technician found no gas running to the units. Traced the line and checked the meters. Meter has been locked out by the gas company. Reporting to customer, gas company will need to unlock the meters and restore service before we can confirm heating operational again.

Near E Foothill Blvd, Pasadena, CA 91107
Pasadena, CA - Dispatched our Pasadena, California a/c technician to a cell phone provider to investigate a no-heat complaint. Upon inspection, technician found no gas running to the units. Traced the line and checked the meters. Meter has been locked out by the gas company. Reporting to customer, gas company will need to unlock the meters and restore service before we can confirm heating operational again.
Kevin S.

Kevin S.

Dispatched our technician back to a home goods store on Foothill Blvd in Pasadena, CA, to finish AC repairs. Their Lennox air conditioner needed the contactor replaced. After hooking up electrical again, tech tested unit and confirmed no more issues. Checked out with EMS, rest of site working normally.

Near E Foothill Blvd, Pasadena, CA 91107
Pasadena, CA - Dispatched our technician back to a home goods store on Foothill Blvd in Pasadena, CA, to finish AC repairs. Their Lennox air conditioner needed the contactor replaced. After hooking up electrical again, tech tested unit and confirmed no more issues. Checked out with EMS, rest of site working normally.
Sergio J.

Sergio J.

February a/c PM scheduled for an office building in Pasadena, CA. Filters were swapped out, belts tested, units inspected. Noted a 15 foot section of flexduct in poor shape, has split open, will quote to customer for replacement.

Near Valley St, Pasadena, CA 91105
Pasadena, CA - February a/c PM scheduled for an office building in Pasadena, CA. Filters were swapped out, belts tested, units inspected. Noted a 15 foot section of flexduct in poor shape, has split open, will quote to customer for replacement.
Sergio J.

Sergio J.

RESSAC PM technician completed the air conditioning maintenance at a second office building in Pasadena, California. Filters changed, belts adjusted, all units working fine.

Near Valley St, Pasadena, CA 91105
Pasadena, CA - RESSAC PM technician completed the air conditioning maintenance at a second office building in Pasadena, California. Filters changed, belts adjusted, all units working fine.
Sergio J.

Sergio J.

Near Valley St, Pasadena, CA 91105
Sergio J.

Sergio J.

Near Valley St, Pasadena, CA 91105
Sergio J.

Sergio J.

Near S De Lacey Ave, Pasadena, CA 91105
Sergio J.

Sergio J.

Near S De Lacey Ave, Pasadena, CA 91105
Sergio J.

Sergio J.

A home goods store in Pasadena, CA, was scheduled for approved HVAC repairs today. The #5 Lennox needed a new condenser fan motor and leak search on its first stage. The #3 air conditioner had cracked crankcase heater and bad suction line drier. Unit #7 also had a bad crankcase heater. Tech completed all quoted work, tested units and confirmed operations with EMS.

Near E Foothill Blvd, Pasadena, CA 91107
Pasadena, CA - A home goods store in Pasadena, CA, was scheduled for approved HVAC repairs today. The #5 Lennox needed a new condenser fan motor and leak search on its first stage. The #3 air conditioner had cracked crankcase heater and bad suction line drier. Unit #7 also had a bad crankcase heater. Tech completed all quoted work, tested units and confirmed operations with EMS.
Joshua C.

Joshua C.

RESSAC ac repair tech returned to an office building in LA county to address recurring heating issues on their #1 Ruud air conditioner. After careful inspection, the technician pinpointed the issue to a bad IDM switch. Will need to source and quote the new switch to the customer. Blower housing and wheel need to be cleaned as well.

Near W Del Mar Blvd, Pasadena, CA 91105
Pasadena, CA - RESSAC ac repair tech returned to an office building in LA county to address recurring heating issues on their #1 Ruud air conditioner. After careful inspection, the technician pinpointed the issue to a bad IDM switch. Will need to source and quote the new switch to the customer. Blower housing and wheel need to be cleaned as well.
Joshua C.

Joshua C.

Our installation technician returned to a new property in Pasadena, CA, to complete installing isolation relays for the new Trane air conditioners. Relays were installed per wiring diagrams, as well as new thermostats and CO2 sensors. Configured both thermostats and sensors, wired in the Jade controllers.

Near Waverly Dr, Pasadena, CA 91105
Sergio J.

Sergio J.

Dispatched our Pasadena, California, repair team to a property manager's office for approved repairs. Three Trane AC's needed work: the inducer fan motor was replaced on #4, the igniters and ignition board swapped for new on #6 and #7. Tested all equipment after repairs. Units cycle correctly and are operational now.

Near E Green St, Pasadena, CA 91106
Pasadena, CA - Dispatched our Pasadena, California, repair team to a property manager's office for approved repairs. Three Trane AC's needed work: the inducer fan motor was replaced on #4, the igniters and ignition board swapped for new on #6 and #7. Tested all equipment after repairs. Units cycle correctly and are operational now.
Sergio J.

Sergio J.

A coffee shop in Pasadena, California, was scheduled for winter AC maintenance. All components were inspected; motors, compressor, wiring all OK. Filters changed. Ran and tested, no issues to quote to customer today.

Near E Colorado Blvd, Pasadena, CA 91105
Pasadena, CA - A coffee shop in Pasadena, California, was scheduled for winter AC maintenance. All components were inspected; motors, compressor, wiring all OK. Filters changed. Ran and tested, no issues to quote to customer today.
Sergio J.

Sergio J.

Winter maintenance scheduled for an imported goods store in LA county. All filters were changed on the Carrier air conditioners, components checked. Minor issue on unit #8, reported to EMS who will have the customer's electrical vendor address.

Near E Colorado Blvd, Pasadena, CA 91107
Pasadena, CA - Winter maintenance scheduled for an imported goods store in LA county. All filters were changed on the Carrier air conditioners, components checked. Minor issue on unit #8, reported to EMS who will have the customer's electrical vendor address.
Franco M.

Franco M.

Dispatched our Pasadena, California, a/c tech to a mobile provider to inspect their air conditioners after a power outage. Technician found the circuit breaker tripped. Tested the equipment and found the compressor had grounded and the filter dryer needs to be replaced. Will quote compressor replacement to customer, unit is down for now.

Near S Lake Ave, Pasadena, CA 91101
Pasadena, CA - Dispatched our Pasadena, California, a/c tech to a mobile provider to inspect their air conditioners after a power outage. Technician found the circuit breaker tripped. Tested the equipment and found the compressor had grounded and the filter dryer needs to be replaced. Will quote compressor replacement to customer, unit is down for now.
Sergio J.

Sergio J.

Near Valley St, Pasadena, CA 91105
Sergio J.

Sergio J.

Near Valley St, Pasadena, CA 91105