5 Diamond Heating and Cooling
(619) 389-6003
(833) 353-4822
heating & air conditioning in San Diego, CA
Solar Installation

When it comes to heating and air conditioning in San Marcos, CA we are committed to making sure your home is comfortable! 5 Diamond Heating and Cooling technicians can be at your door right away whether you need HVAC repair, replacement, or maintenance. We are locally owned and operated which means we care about the needs of our community and treat each of our customers like family.

Ask us for a free estimate on a new heating, air conditioning or mini split installation or about our Diamond membership service agreement.

Air Conditioning

Air Conditioning in San Marcos, CA

Whether it's a new AC installation or an air conditioning tune-up, we'll get the job done. As a family owned business we share the same quality, comfort and environmental goals as homeowners in San Marcos, CA. That means you can count on us for the best air conditioning service, customer satisfaction & saving money on your energy bill. Our goal is that you always receive the finest work, no matter if it's a small repair job or the complete installation of a large commercial air conditioning system.

Mini Split Installation

Mini Splits Installation

Keep your home or business comfortable while saving money on energy bills by installing a mini split in San Marcos, CA. We also provide ductless air conditioning repair & maintenance. If you don't require or want a conventional central air conditioning & heating system, then a ductless mini split may be right for your homoe or business.



If your heating sytems is not keeping your home warm give us a call. We will troubeshoot wiring problems, mechanical issues or gas leaks. We provide furnace repair & maintenance for all brands and models. If you need a new heater will can provide a free estimate based on your home's size, your comfort needs and budget.

Call 5 Diamond Heating and Cooling at (833) 353-4822

Contact Us

All dealings with Carlos, Nick and their staff were prompt, friendly and very professional. They quickly diagnosed our problem and quoted us a fix that we found to be very reasonable after doing some research. They helped us with financing and that went quickly as well. It was a big job and they stayed late and got it all done in one day. I highly recommend 5 Diamond!

- El Cajon, CA | HVAC Service
5 Diamond Heating and Cooling
5 Diamond Heating and Cooling 6482 Ambrosia Dr # 5107, San Diego, CA 92124 $ (833) 353-4822
5 / 5 stars

HVAC Certifications

Home Advisor
Home Advisor
Home Advisor
Home Advisor
5 Diamond Heating and Cooling Inc BBB Business Review