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Rassac is dedicated to the Service, Installation, Preventative Maintenance, Tenant Improvement and operations of mechanical systems for a broad range of sites from Residential, Malls, Retail Stores, Major Chain Stores, Office Buildings and Health Care facilities. With work forces located all over Southern California from Santa Barbara to San Diego, we are specialists in year-round climate control. Whether you need interior cooling, heating or a specially controlled temperature-humidity environment, Rassac strives to provide the very best. 


When we accept a job, we accept all responsibilities related to its agreement.

Our responsibility continues through final acceptance and warranty periods.

Keeping on schedule is of great importance, as we know that any hold up can cost money.

We will meet your deadlines and your quality demands.

Ensure longevity of your equipment with our preventative maintenance program. You’ll eliminate 80% of heating/air conditioning problems with our service, contact us today to get the following assessment points and find out how to preserve your facilitates.

Need an entire need unit? From start to finish the service techs at Rassac have you covered. Call today for a quote. 


"Highly recommend.  Our home is in Sierra Madre.  We had problems with our central AC for a couple of years.  Finally, we called Rassac, and they immediately identified the problem and fixed our system. Nice to find a quality company.  Fair prices.  On time.  And, most importantly, honest.  :)"

Beth A., Sierra Madre

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"Our AC did not work and our Home Warranty Insurance sent Rassac Air Systems to us to have the problem accessed and fixed.  Oscar from Rassac was quick to respond and fixed our home broken AC.  Not only that, he also made useful recommendations for future maintenance.  He was always on time, pleasant, and honest like the previous reviewer mentioned.  We couldn't be happier.  Highly recommend this company and we will call them the next time we need maintenance or repairs."

Trang N., Los Angeles 

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State contractors license number 245731-716318

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