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

RESSAC Climate Control Rated 5.0 out of 5 stars based on 16 customer reviews

Great Service




Review of RESSAC Climate Control

fast and effieciant.


Response from RESSAC Climate Control:

Hi Johana, we'll pass your feedback back to our technician Franco, and thank you for the review!


Great Technician




Review of RESSAC Climate Control

Franco was very helpful. He let us know what was going on and was prompt in fixing our issue.


Response from RESSAC Climate Control:

Glad to hear Franco could get your air conditioner repaired promptly, Christopher. Thank you for the wonderful review!





Review of RESSAC Climate Control





Review of RESSAC Climate Control


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




Review of RESSAC Climate Control

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




Review of RESSAC Climate Control

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




Review of RESSAC Climate Control

Excellent Service


Great service




Review of RESSAC Climate Control


great service




Review of RESSAC Climate Control

keeping us cool, we love it.


Excellent Service!!!




Review of RESSAC Climate Control

Fast Reliable and professional!


Franco M.

Franco M.

Near S Barrington Ave, Los Angeles, CA 90064
Franco M.

Franco M.

A coffee shop on Sunset Blvd in LA reported that their AC had been down for several weeks. Arrived for a second opinion inspection, found that the unit was off and the circuit breaker was tripped for the condenser. Further troubleshooting found the capacitor failing and a dirty condenser coil. Also found a pitted contactor that was sticking. Will quote necessary repairs to the customer, cleaning for condenser coils should also be considered.

Near Sunset Blvd, Los Angeles, CA 90029
Los Angeles, CA - A coffee shop on Sunset Blvd in LA reported that their AC had been down for several weeks. Arrived for a second opinion inspection, found that the unit was off and the circuit breaker was tripped for the condenser. Further troubleshooting found the capacitor failing and a dirty condenser coil. Also found a pitted contactor that was sticking.  Will quote necessary repairs to the customer, cleaning for condenser coils should also be considered.
Kevin S.

Kevin S.

Near Ventura Blvd, Los Angeles, CA 91403
Franco M.

Franco M.

Approved repairs scheduled for a commercial customer in Los Angeles County, replacing capacitors for their York and ADP split system units. After swapping out all capacitors, our technician tested and cycled all units. Amperages correct, units running per spec. Job complete.

Near Melrose Ave, Los Angeles, CA 90069
Los Angeles, CA - Approved repairs scheduled for a commercial customer in Los Angeles County, replacing capacitors for their York and ADP split system units. After swapping out all capacitors, our technician tested and cycled all units. Amperages correct, units running per spec. Job complete.
Franco M.

Franco M.

Scheduled a major air conditioning maintenance at a pet hotel in Los Angeles CA. All units had filters replaced, coils washed and drain pans/lines cleaned and cleared. Tested and measured all components, set thermostat settings for cooling season. Found multiple issues, including pitted contactors and over-amping fan motors. Will quote all issues to customer for repairs, PM complete.

Near N Highland Ave, Los Angeles, CA 90038
Los Angeles, CA - Scheduled a major air conditioning maintenance at a pet hotel in Los Angeles CA. All units had filters replaced, coils washed and drain pans/lines cleaned and cleared. Tested and measured all components, set thermostat settings for cooling season. Found multiple issues, including pitted contactors and over-amping fan motors. Will quote all issues to customer for repairs, PM complete.
Franco M.

Franco M.

Approved HVAC repairs were scheduled for our commercial customer in Los Angeles on Santa Monica Boulevard. Their Intertek make-up air unit needed its evaporator coil cleaned. After dissembling the return plenum, the technicians vacuumed and brushed the evaporator coil, then chemically rinsed the coils. Re-assembled the plenum, unit working normally and cleaning complete.

Near Santa Monica Blvd, Los Angeles, CA 90067
Los Angeles, CA - Approved HVAC repairs were scheduled for our commercial customer in Los Angeles on Santa Monica Boulevard. Their Intertek make-up air unit needed its evaporator coil cleaned. After dissembling the return plenum, the technicians vacuumed and brushed the evaporator coil, then chemically rinsed the coils. Re-assembled the plenum, unit working normally and cleaning complete.
Franco M.

Franco M.

Dispatched our commercial technician for a major HVAC maintenance at a home goods store in Westchester CA. Performed standard 180 checklist items, including filter change, coil cleaning and additional exhaust fan maintenance. Found two Lennox air conditioners with pitted contactors and another Lennox with a failing condenser fan motor. Those three units are operational, will quote for standard repairs to the customer. Confirmed no other issues with EMS, PM complete.

Near S Sepulveda Blvd, Los Angeles, CA 90045
Los Angeles, CA - Dispatched our commercial technician for a major HVAC maintenance at a home goods store in Westchester CA. Performed standard 180 checklist items, including filter change, coil cleaning and additional exhaust fan maintenance. Found two Lennox air conditioners with pitted contactors and another Lennox with a failing condenser fan motor. Those three units are operational, will quote for standard repairs to the customer. Confirmed no other issues with EMS, PM complete.
Sergio J.

Sergio J.

Near Fallbrook Ave, Los Angeles, CA 91307
Sergio J.

Sergio J.

One of our commercial customers in West Hills CA was scheduled for approved HVAC work on their units. All the air conditioners needed their condensers cleaned, and two 17.5 ton Lennox package systems needed 4 capacitors replaced for their condenser fan motors. After completing approved repairs, both units were tested and cycled. Systems running well, job complete.

Near Fallbrook Ave, Los Angeles, CA 91307
Los Angeles, CA - One of our commercial customers in West Hills CA was scheduled for approved HVAC work on their units. All the air conditioners needed their condensers cleaned, and two 17.5 ton Lennox package systems needed 4 capacitors replaced for their condenser fan motors. After completing approved repairs, both units were tested and cycled. Systems running well, job complete.
Sergio J.

Sergio J.

Spring air conditioning maintenance scheduled at a commercial property in Van Nuys California. The site was scheduled for a basic service, including filter change and cooling check of motors and compressors. Cleaned the return air grill and checked thermostat for proper settings. No issues to report, job complete.

Near Burbank Blvd, Los Angeles, CA 91401
Los Angeles, CA - Spring air conditioning maintenance scheduled at a commercial property in Van Nuys California. The site was scheduled for a basic service, including filter change and cooling check of motors and compressors. Cleaned the return air grill and checked thermostat for proper settings. No issues to report, job complete.
Franco M.

Franco M.

Dispatched our Beverly Hills CA technician to an urgent AC call, the store reporting the thermostats and sensors were blank. Upon arrival, our tech found their commercial air handler had a closed damper, and was not communicating with the thermostat. After resetting the unit and troubleshooting the control board, the technician was able to activate the damper. He cycled the unit on and off several times to confirm all operations were correct again. He also replaced the air filter as it was very dirty. Store comfortable again, job complete.

Near Beverly Blvd, Los Angeles, CA 90048
Los Angeles, CA - Dispatched our Beverly Hills CA technician to an urgent AC call, the store reporting the thermostats and sensors were blank. Upon arrival, our tech found their commercial air handler had a closed damper, and was not communicating with the thermostat. After resetting the unit and troubleshooting the control board, the technician was able to activate the damper. He cycled the unit on and off several times to confirm all operations were correct again. He also replaced the air filter as it was very dirty. Store comfortable again, job complete.
Franco M.

Franco M.

Near Melrose Ave, Los Angeles, CA 90069
Franco M.

Franco M.

Dispatched our Los Angeles CA commercial AC technician to a customer on Melrose Avenue, to complete approved repairs. The technician replaced a failing condenser fan motor, blade and capacitor on a 3 ton Trane air conditioner. After completing the quoted work, the technician tested and ran the unit to confirm the system was operational again. No more issues to report, job complete.

Near Melrose Ave, Los Angeles, CA 90046
Los Angeles, CA - Dispatched our Los Angeles CA commercial AC technician to a customer on Melrose Avenue, to complete approved repairs. The technician replaced a failing condenser fan motor, blade and capacitor on a 3 ton Trane air conditioner. After completing the quoted work, the technician tested and ran the unit to confirm the system was operational again. No more issues to report, job complete.
Franco M.

Franco M.

Spring commercial air conditioning maintenance scheduled for a specialty imports store in West Hills California. PM performed per scope, including full spring testing/inspection, filter change and coil cleaning. No issues found with the equipment, PM complete.

Near Fallbrook Ave, Los Angeles, CA 91307
Los Angeles, CA - Spring commercial air conditioning maintenance scheduled for a specialty imports store in West Hills California. PM performed per scope, including full spring testing/inspection, filter change and coil cleaning. No issues found with the equipment, PM complete.
Sergio J.

Sergio J.

A chiropractors office in Porter Ranch, CA, was scheduled for their spring AC preventative maintenance. All components were inspected and tested for cooling season, filters replaced. Units are in working order, PM complete.

Near Rinaldi St, Los Angeles, CA 91326
Los Angeles, CA - A chiropractors office in Porter Ranch, CA, was scheduled for their spring AC preventative maintenance. All components were inspected and tested for cooling season, filters replaced. Units are in working order, PM complete.
Kevin S.

Kevin S.

A cash loan shop in Arleta, California, was scheduled for multiple repairs on their commercial AC units. Our technician replaced the phase monitor on a Trane unit, and the control board, indoor blower motor, wheel and contactor on a 5 ton Goodman system. After completing approved repairs, the Trane unit is operational again. However the Goodman unit tested low on refrigerant, with a leak at the reversing valve. Will quote additional needed repairs to customer, site is at 60% cooling and heating capacity at this time.

Near Woodman Ave, Los Angeles, CA 91331
Los Angeles, CA - A cash loan shop in Arleta, California, was scheduled for multiple repairs on their commercial AC units. Our technician replaced the phase monitor on a Trane unit, and the control board, indoor blower motor, wheel and contactor on a 5 ton Goodman system. After completing approved repairs, the Trane unit is operational again. However the Goodman unit tested low on refrigerant, with a leak at the reversing valve. Will quote additional needed repairs to customer, site is at 60% cooling and heating capacity at this time.
Franco M.

Franco M.

Our Los Angeles CA AC tech returned to a luxury goods store to install a new condenser fan motor, blade and capacitor on their commercial York air conditioner. After completing quoted repairs, the technician tested and ran the operating system to confirm it was operational again. Unit working per manufacturer specifications, no more issues to report.

Near Melrose Pl, Los Angeles, CA 90069
Los Angeles, CA - Our Los Angeles CA AC tech returned to a luxury goods store to install a new condenser fan motor, blade and capacitor on their commercial York air conditioner. After completing quoted repairs, the technician tested and ran the operating system to confirm it was operational again. Unit working per manufacturer specifications, no more issues to report.
Sergio J.

Sergio J.

Near Beverly Blvd, Los Angeles, CA 90048
Sergio J.

Sergio J.

A luxury goods store in Beverly Hills, CA, reported that their VAV wasn't working per the mall inspection. Our commercial HVAC technician found that the store's VAV had slipped. Tech was able to re-adjust and line up the shaft to the correct side. Double-checked all VAVs to confirm no other issues. Mall was supplying 55 degree air, time-clock functioning well. Space back to comfortable temperatures.

Near Beverly Blvd, Los Angeles, CA 90048
Los Angeles, CA - A luxury goods store in Beverly Hills, CA, reported that their VAV wasn't working per the mall inspection. Our commercial HVAC technician found that the store's VAV had slipped. Tech was able to re-adjust and line up the shaft to the correct side. Double-checked all VAVs to confirm no other issues. Mall was supplying 55 degree air, time-clock functioning well. Space back to comfortable temperatures.
Franco M.

Franco M.

Dispatched our Sherman Oaks, CA, commercial AC survey technician to a jewelry store to inspect the units and perform a duct detector test. While onsite, tech found one Carrier air conditioner with a dirty evaporator coil and filter, as well as a weak run capacitor. He also found a second Carrier unit that had burnt wiring, a pitted contactor and was low on refrigerant. Will quote needed repairs to customer, smoke detector test checked out normal.

Near Riverside Dr, Los Angeles, CA 91423
Los Angeles, CA - Dispatched our Sherman Oaks, CA, commercial AC survey technician to a jewelry store to inspect the units and perform a duct detector test. While onsite, tech found one Carrier air conditioner with a dirty evaporator coil and filter, as well as a weak run capacitor. He also found a second Carrier unit that had burnt wiring, a pitted contactor and was low on refrigerant. Will quote needed repairs to customer, smoke detector test checked out normal.
Sergio J.

Sergio J.

Major commercial HVAC repairs scheduled for a video production site in Los Angeles, California. Additional parts had arrived, tech returned and defrosted the frozen coils on their #8 Bryant air conditioner. Troubleshooted and discovered the liquid line drier was clogged. Removed and replaced drier, vacuumed and charged. Cleaned the evaporator coil and adjusted the fan cycling switch. Unit producing 57 degree air now and server room at acceptable temperatures.

Near De Longpre Ave, Los Angeles, CA 90028
Los Angeles, CA - Major commercial HVAC repairs scheduled for a video production site in Los Angeles, California. Additional parts had arrived, tech returned and defrosted the frozen coils on their #8 Bryant air conditioner. Troubleshooted and discovered the liquid line drier was clogged. Removed and replaced drier, vacuumed and charged. Cleaned the evaporator coil and adjusted the fan cycling switch. Unit producing 57 degree air now and server room at acceptable temperatures.
Sergio J.

Sergio J.

Our LA commercial refrigeration tech returned to a diner to complete work on their food prep table. The technician removed and replaced a bad motor and mounting plate, rewiring the new motor and also brushing out the condenser coil. Ran and cycled system, dropped back down to operating temps at 35 degrees. No more issues to report.

Near Beverly Blvd, Los Angeles, CA 90048
Los Angeles, CA - Our LA commercial refrigeration tech returned to a diner to complete work on their food prep table. The technician removed and replaced a bad motor and mounting plate, rewiring the new motor and also brushing out the condenser coil. Ran and cycled system, dropped back down to operating temps at 35 degrees. No more issues to report.
Sergio J.

Sergio J.

A clothing chain store in LA on Santa Monica Blvd requested service for their 2nd floor area being too hot. The technician troubleshooted the #3 unit for the 2nd floor, a commercial 25 ton Trane system that had tripped the circuit breaker and had a shorted contactor. Replaced the contactor and 2 pol switch relay. Cycled system back on and monitored. Unit running again, confirmed with EMS that store has returned to set-point.

Near Santa Monica Blvd, Los Angeles, CA 90067
Los Angeles, CA - A clothing chain store in LA on Santa Monica Blvd requested service for their 2nd floor area being too hot. The technician troubleshooted the #3 unit for the 2nd floor, a commercial 25 ton Trane system that had tripped the circuit breaker and had a shorted contactor. Replaced the contactor and 2 pol switch relay.  Cycled system back on and monitored. Unit running again, confirmed with EMS that store has returned to set-point.
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.
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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