Commercial HVAC and Refrigeration in LA Since 1929

Los Angeles, CA business & property owners in need of  a trusted commercial HVAC contractor, whether they need AC 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.

RESSAC is large enough to service all of California, yet based right here in Los Angeles County.  We service all of Los Angeles, including downtown LA, San Fernando Valley (including Sheman Oaks, Encino, Van Nuys, Reseda, Northridge), Hollywood, West LA, Bel-Air, Brentwood, Griffith Park/Los Feliz and everywhere else.  We also service all the cities in and around Los Angeles County.

Don’t take our word for it, read our reviews below to learn more.

Local Reviews
for Los Angeles, CA

Rated 5.0 out of 5 stars based on 14 customer reviews









Response from RESSAC Climate Control:

Morning Lea, thank you for the 5-star review for Kevin's visit last Friday. We're happy to see that the repairs for your AC and freezers were successful.


GREAT SERVICE




JOSE WAS AMAZING, HE FIXED ALL THE LEAKS, OUR TEAM APPRECIATE HIM! .


Response from RESSAC Climate Control:

Hi Devarius, good to hear the leak issues are resolved, and thank you for the awesome review!


On time, good work, friendly service




The invoice goes to our landlord, so I can't really speak to cost/price


Response from RESSAC Climate Control:

Hi Molly, thanks for taking the time to review our work, we appreciate the feedback!


Great Service




Excellent Service


Great service





great service




keeping us cool, we love it.


Excellent Service!!!




Fast Reliable and professional!


Amazing!




Sergio was very approachable, polite, and clear about what the issue was.


District Manager




Franco was very helpful and fixed our AVAC issue happy with service.


Franco M.

Franco M.

Quoted air conditioning repairs were scheduled at a video production facility in Los Angeles, CA. Chemically cleaned all the condenser coils on the units, and relocated a return duct per customer specifications. Server room is running well, additional units are still waiting on pre-approved parts to arrive. NOTE: Customer is interested in installing a secondary system for their server room as the current unit seems to struggle. Took measurements and specs, will make recommendation to office for quoting.

Near De Longpre Ave, Los Angeles, CA 90028
Los Angeles, CA - Quoted air conditioning repairs were scheduled at a video production facility in Los Angeles, CA. Chemically cleaned all the condenser coils on the units, and relocated a return duct per customer specifications. Server room is running well, additional units are still waiting on pre-approved parts to arrive. NOTE: Customer is interested in installing a secondary system for their server room as the current unit seems to struggle. Took measurements and specs, will make recommendation to office for quoting.
 .

.

Relocated a heating vent for a customer in LA. Flue piping was replaced, job cleaned and left ready for additional contactors to continue their work.

Near W 83rd Pl, Los Angeles, CA 90045
Franco M.

Franco M.

Air conditioning PM scheduled for a jewelry store on Santa Monica Boulevard in LA. Site has a VAV only, technician inspected the equipment and replaced the belt. Dampers and controls are functional. did find evap coil very dirty. Will quote to clean, unit otherwise operating fine.

Near Santa Monica Blvd, Los Angeles, CA 90067
Los Angeles, CA - Air conditioning PM scheduled for a jewelry store on Santa Monica Boulevard in LA. Site has a VAV only, technician inspected the equipment and replaced the belt. Dampers and controls are functional. did find evap coil very dirty. Will quote to clean, unit otherwise operating fine.
Franco M.

Franco M.

Arrived at a diner in Los Angeles to repair equipment for one of our commercial refrigeration supply customers. Inspecting the unit, our tech found that the fan blade had come off the motor and was damaged. Manufacturer will supply new blade and ship to site. Will re-dispatch to repair once part arrives.

Near Beverly Blvd, Los Angeles, CA 90048
Los Angeles, CA - Arrived at a diner in Los Angeles to repair equipment for one of our commercial refrigeration supply customers. Inspecting the unit, our tech found that the fan blade had come off the motor and was damaged. Manufacturer will supply new blade and ship to site. Will re-dispatch to repair once part arrives.
Franco M.

Franco M.

Dispatched our LA area AC tech to a video production site, where their machine room commercial HVAC was blowing hot air. Found the #8 Bryant unit with a shorted fuse, compressor over-amping due to clogged coils (construction nearby is causing coils to grow dirtier, faster). Also found the contactor burnt and pitted. Will quote repairs to customer units functional temporarily until repairs are made.

Near De Longpre Ave, Los Angeles, CA 90028
Los Angeles, CA - Dispatched our LA area AC tech to a video production site, where their machine room commercial HVAC was blowing hot air. Found the #8 Bryant unit with a shorted fuse, compressor over-amping due to clogged coils (construction nearby is causing coils to grow dirtier, faster). Also found  the contactor burnt and pitted. Will quote repairs to customer units functional temporarily until repairs are made.
Franco M.

Franco M.

Major spring preventative maintenance scheduled for our commercial customer's HVAC system in Los Angeles, CA. Changed all disposable air filters, washed all washable filters, inspected all drain lines/pans, completed cooling season check. Found 5 units with minor issues (weak capacitors and over-amping fan motors) that we will quote to the customer. Units all operational.

Near De Longpre Ave, Los Angeles, CA 90028
Los Angeles, CA - Major spring preventative maintenance scheduled for our commercial customer's HVAC system in Los Angeles, CA. Changed all disposable air filters, washed all washable filters, inspected all drain lines/pans, completed cooling season check. Found 5 units with minor issues (weak capacitors and over-amping fan motors) that we will quote to the customer. Units all operational.
Sergio J.

Sergio J.

Quoted AC repairs were scheduled for a commercial customer in Sherman Oaks, California. Upon arrival, our technician replaced the contactor on the #1 Carrier unit, and a capacitor on the #3 air conditioner. Tested and ran both systems to confirm repairs were successful. No further issues to report.

Near Ventura Blvd, Los Angeles, CA 91403
Los Angeles, CA - Quoted AC repairs were scheduled for a commercial customer in Sherman Oaks, California. Upon arrival, our technician replaced the contactor on the #1 Carrier unit, and a capacitor on the #3 air conditioner. Tested and ran both systems to confirm repairs were successful. No further issues to report.
Kevin S.

Kevin S.

Dispatched our LA commercial refrigeration technician to a customer for approved repairs. One of their Traulsen freezers had damaged hinges that needed to be replaced. Our tech replaced the left door hinge assembly, tested hinge to confirm proper operations. Door working well now, no other problems to report.

Near Ventura Blvd, Los Angeles, CA 91364
Los Angeles, CA - Dispatched our LA commercial refrigeration technician to a customer for approved repairs. One of their Traulsen freezers had damaged hinges that needed to be replaced. Our tech replaced the left door hinge assembly, tested hinge to confirm proper operations. Door working well now, no other problems to report.
Sergio J.

Sergio J.

Received an emergency request from a cell phone store in Panorama City, CA, to work on their commercial air conditioner. The technician found that the back thermostat had been locked, was able to unlock and show site how to adjust temperatures to their liking. Also found the front thermostat in a locked plastic box, but was unable to open due to he store having lost the key. Tech left the box as-is to not damage the thermostat, as front stat was reading proper temps at 70 degrees. Site comfortable now.

Near Van Nuys Blvd, Los Angeles, CA 91402
Los Angeles, CA - Received an emergency request from a cell phone store in Panorama City, CA, to work on their commercial air conditioner. The technician found that the back thermostat had been locked, was able to unlock and show site how to adjust temperatures to their liking. Also found the front thermostat in a locked plastic box, but was unable to open due to he store having lost the key. Tech left the box as-is to not damage the thermostat, as front stat was reading proper temps at 70 degrees. Site comfortable now.
Franco M.

Franco M.

Sent our AC/refrigeration technician to a weight loss center in Los Angeles, CA, to perform routine maintenance. PM checklist items performed on all HVAC and freezers. Found four units with problems: one package AC with a bad belt, two Traulsen freezers leaking water during defrost, and another Traulsen system with broken hinges. All units are operational, deficiencies will be quoted for approval.

Near Ventura Blvd, Los Angeles, CA 91364
Los Angeles, CA - Sent our AC/refrigeration technician to a weight loss center in Los Angeles, CA, to perform routine maintenance. PM checklist items performed on all HVAC and freezers. Found four units with problems: one package AC with a bad belt, two Traulsen freezers leaking water during defrost, and another Traulsen system with broken hinges. All units are operational, deficiencies will be quoted for approval.
Franco M.

Franco M.

Scheduled a meet-up with our LA HVACR technician and a customer's plumbing contractor, and a contact from the Gas Company. Site needed a new gas meter installed and our meeting was to go over BTU needs and any other issues. After inspection, confirmed Gas Company will be back out next week (no exact date confirmed) to install meter. We will confirm that installation and schedule our own follow-up to flush lines and get units heating again.

Near Ventura Blvd, Los Angeles, CA 91403
Los Angeles, CA - Scheduled a meet-up with our LA HVACR technician and a customer's plumbing contractor, and a contact from the Gas Company. Site needed a new gas meter installed and our meeting was to go over BTU needs and any other issues. After inspection, confirmed Gas Company will be back out next week (no exact date confirmed) to install meter. We will confirm that installation and schedule our own follow-up to flush lines and get units heating again.
Kevin S.

Kevin S.

Our Sherman Oaks, CA, technician arrived at an import retail store to completed quoted repairs on their commercial refrigerator. The Imbera cooler needed its evaporator coil, compressor, filter drier and capillary tube replaced. After replacing parts, tech pressurized system to test for leaks. Pulled unit into vacuum and hooked up all electrical. Charged unit with new R134A refrigerant and checked operation. Watched unit cycle on and off multiple times, confirmed no more issues. Repairs complete, cooler at 40 degrees.

Near Ventura Blvd, Los Angeles, CA 91403
Los Angeles, CA - Our Sherman Oaks, CA, technician arrived at an import retail store to completed quoted repairs on their commercial refrigerator. The Imbera cooler needed its evaporator coil, compressor, filter drier and capillary tube replaced. After replacing parts, tech pressurized system to test for leaks. Pulled unit into vacuum and hooked up all electrical. Charged unit with new R134A refrigerant and checked operation. Watched unit cycle on and off multiple times, confirmed no more issues. Repairs complete, cooler at 40 degrees.
Kevin S.

Kevin S.

Our Los Angeles, CA, HVAC tech arrived at pet hotel to investigate the heater not working for lobby. Troubleshooted the lobby Trane split system and found a loose electrical connection at the condensing unit. Repaired the connection and tested both heating and cooling. No further issues at this time, repair complete.

Near S Barrington Ave, Los Angeles, CA 90064
Los Angeles, CA - Our Los Angeles, CA, HVAC tech arrived at pet hotel to investigate the heater not working for lobby. Troubleshooted the lobby Trane split system and found a loose electrical connection at the condensing unit. Repaired the connection and tested both heating and cooling. No further issues at this time, repair complete.
Sergio J.

Sergio J.

Our LA area repair technician returned to a massage center to complete approved repairs. Tech replaced the fan motor on the #2 split York system. Their #1 Trane split system needed filters and belt replaced. After completing repairs, had to reset thermostat to run on gas so as not to call for cooling during heat mode. Also found that #2 not coming on in heating. Re-checked all components, unit cools but will not heat. Traced issue to error with omni damper and zoning controls. Will need to troubleshoot further, alerting customer.

Near Ventura Blvd, Los Angeles, CA 91403
Los Angeles, CA - Our LA area repair technician returned to a massage center to complete approved repairs. Tech replaced the fan motor on the #2 split York system. Their #1 Trane split system needed filters and belt replaced. After completing repairs, had to reset thermostat to run on gas so as not to call for cooling during heat mode. Also found that #2 not coming on in heating. Re-checked all components, unit cools but will not heat. Traced issue to error with omni damper and zoning controls. Will need to troubleshoot further, alerting customer.
Franco M.

Franco M.

Dispatched our Sherman Oaks CA air conditioning technician to a massage center to survey their equipment. Technician acquired all the HVAC data, and found one York split heat pump had a bad condenser fan motor, overheating, that needs to be replaced. Dual capacitor needs replacing as well. Site needs filter change/basic maintenance. Reporting to customer.

Near Ventura Blvd, Los Angeles, CA 91403
Los Angeles, CA - Dispatched our Sherman Oaks CA air conditioning technician to a massage center to survey their equipment. Technician acquired all the HVAC data, and found one York split heat pump had a bad condenser fan motor, overheating, that needs to be replaced. Dual capacitor needs replacing as well. Site needs filter change/basic maintenance. Reporting to customer.
Sergio J.

Sergio J.

Winter AC maintenance scheduled at a hat shop in LA county. Standard filter swap and inspection. All components checked out OK. Thermostat setting adjusted slightly for store comfort.

Near Ventura Blvd, Los Angeles, CA 91604
Los Angeles, CA - Winter AC maintenance scheduled at a hat shop in LA county. Standard filter swap and inspection. All components checked out OK. Thermostat setting adjusted slightly for store comfort.
Sergio J.

Sergio J.

Near Ventura Blvd, Los Angeles, CA 91604
Kevin S.

Kevin S.

Our RESSAC technician performed preventative maintenance on ac units at coffee shop in Venice, CA. Tech replaced air filters and inspected all components. Units working fine at this time, PM complete.

Near Abbot Kinney Blvd, Los Angeles, CA 90291
Los Angeles, CA - Our RESSAC technician performed preventative maintenance on ac units at coffee shop in Venice, CA. Tech replaced air filters and inspected all components. Units working fine at this time, PM complete.
Sergio J.

Sergio J.

Winter a/c maintenance scheduled at a surgery center in Sherman Oaks, California. All filters were swapped, belts checked and units inspected. Found the operating room #2 unit not cooling and space temp warm. Discovered the thermostat had become dislodged from the base. Was able to re-attach t-stat and program again. Unit working fine now, no other deficiencies to report.

Near Sepulveda Blvd, Los Angeles, CA 91403
Los Angeles, CA - Winter a/c maintenance scheduled at a surgery center in Sherman Oaks, California. All filters were swapped, belts checked and units inspected. Found the operating room #2 unit not cooling and space temp warm. Discovered the thermostat had become dislodged from the base. Was able to re-attach t-stat and program again. Unit working fine now, no other deficiencies to report.
Kevin S.

Kevin S.

A weight-loss center in LA reported one of their Traulsen freezers icing up. Upon arrival, our commercial refrigeration technician discovered excess ice inside the drain pan that caused the pan to overflow during defrost. Removed the ice and adjusted the slop of the drain pan, and extended the drip time settings to ensure all the condensation would clear the pan by the end of the defrost cycle. Tested drainage and confirmed system operational again.

Near W 3rd St, Los Angeles, CA 90048
Los Angeles, CA - A weight-loss center in LA reported one of their Traulsen freezers icing up. Upon arrival, our commercial refrigeration technician discovered excess ice inside the drain pan that caused the pan to overflow during defrost. Removed the ice and adjusted the slop of the drain pan, and extended the drip time settings to ensure all the condensation would clear the pan by the end of the defrost cycle. Tested drainage and confirmed system operational again.
Franco M.

Franco M.

Quoted repairs scheduled at a pet hotel in West LA. A remote sensor needed to be relocated for their #5 Trane split system, to better read temperatures behind the front office. Tested system after relocation, unit is running and space temps are reading much better.

Near S Barrington Ave, Los Angeles, CA 90064
Los Angeles, CA - Quoted repairs scheduled at a pet hotel in West LA. A remote sensor needed to be relocated for their #5 Trane split system, to better read temperatures behind the front office. Tested system after relocation, unit is running and space temps are reading much better.
Sergio J.

Sergio J.

LA area a/c technician responded to an ER call from a mobile phone store. Thermostat onsite was off and not responding. After completing the initial inspection, tech reports a bad fan relay that caused the blower motor to single phase and damage the insulation. Also located a faulty temperature relay. Will need to quote repairs to customer. Tech had to fix t-stat mount, had become dislodged from wall.

Near Devonshire St, Los Angeles, CA 91344
Los Angeles, CA - LA area a/c technician responded to an ER call from a mobile phone store. Thermostat onsite was off and not responding.  After completing the initial inspection, tech reports a bad fan relay that caused the blower motor to single phase and damage the insulation. Also located a faulty temperature relay. Will need to quote repairs to customer. Tech had to fix t-stat mount, had become dislodged from wall.
Sergio J.

Sergio J.

Our Encino, CA, HVAC technician returned to a home goods store to continue troubleshooting unit #8. Found system working on cooling only. Installed cool relay, troubleshooted with EMS over the phone, was able to set system running to both cooling and heating.

Near Ventura Blvd, Los Angeles, CA 91316
Los Angeles, CA - Our Encino, CA, HVAC technician returned to a home goods store to continue troubleshooting unit #8. Found system working on cooling only. Installed cool relay, troubleshooted with EMS over the phone, was able to set system running to both cooling and heating.
Sergio J.

Sergio J.

Confirmed maintenance service for a chiropractor's office on Sunset Boulevard in LA. Site has one three ton split system, Arcoaire. Tech swapped out filters, inspected all components and re-programmed the t-stat for the customer. All systems functional at this time.

Near Sunset Blvd, Los Angeles, CA 90046
Los Angeles, CA - Confirmed maintenance service for a chiropractor's office on Sunset Boulevard in LA. Site has one three ton split system, Arcoaire. Tech swapped out filters, inspected all components and re-programmed the t-stat for the customer. All systems functional at this time.
Franco M.

Franco M.

Coffee shop on Sunset Boulevard in Los Angeles reported an issue with their display cooler. Water was pooling underneath the unit. Troubleshooting found a plugged drain and overflowing condensate pan. Condenser coil was very dirty. Cleaned out the drain line, pan and evaporator coil. System working well otherwise, no additional work needed.

Near Sunset Blvd, Los Angeles, CA 90029
Los Angeles, CA - Coffee shop on Sunset Boulevard in Los Angeles reported an issue with their display cooler. Water was pooling underneath the unit. Troubleshooting found a plugged drain and overflowing condensate pan. Condenser coil was very dirty. Cleaned out the drain line, pan and evaporator coil. System working well otherwise, no additional work needed.