LIC # 995645

We specialize in Commercial Air Conditioning for the San Diego & Los Angeles Areas. We cover all of San Diego County and downtown San Diego. We will also service residential High Rise Water Source Heat Pumps.

- Water Source Heat Pumps

- Split Systems
- Heat Pumps
- VAVs
- Chilled Water
- Demand Ventilation
- Economizers 
- Maintenance
- Constant Volume

- Metal and Flex Duct

- New AC/Heat pump Installation



24 Hour Emergency Service


-Rooftop Package Units/ Heat Pumps - Our Specialty !!!
- Ductless/Mini-Split Heat Pumps and AC
- Gas Furnaces
- Boilers

- Building automation

- VFD's

- HVAC Preventive Maintenance programs

- Exhaust Fans


Building automation is fantastic way to help your commercial building be energy efficient. Our service technicians are trained to troubleshoot most commercially available control systems.

Each and every commercial building has different HVAC Maintenance Requirements. We offer different levels of maintenance plans or tailer make a a plan to suit your business needs


our Services


Weather it be a brand new Installation on a office building or strip mall or a replacement of an old system, Stay Cool Mechanical has it handled. We handle every detail from crane to start up.

Stay Cool Mechanical Of San Diego is proud of its service department and prides itself on their skilled service technicians to help keep your business running smoothly.