Santa Rosa Air Conditioning Services

San Rafael

(415) 942-6565

Santa Rosa

(707) 452-3464

Santa Rosa Air Conditioning

Keeping Your Summers Breezy With Air Conditioning in Sonoma County & Marin County!

A large number of residences throughout Marin and Sonoma counties rely on air conditioning to keep them cool and comfortable when temperatures soar. The local area has many microclimates for a small county. On a hot day, temperatures can be 10 to 20 degrees hotter than in other towns. Certain valleys or west-facing locations can be brutally hot on a summer’s day. Air conditioning has become more popular because people do not want to be uncomfortably hot in their homes. This is especially true for children or the elderly who may face health hazards as a result of overheating.

John Owens Services, Inc. has been providing air conditioning service in Santa Rosa, including air conditioning installationrepair, and maintenance in the surrounding areas for decades. Let us help you stay cool all summer long. We handle all cooling system makes and models and ensure fast, reliable services at competitive rates every time.

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Types of AC Service in Santa Rosa

The most common air conditioning system in Santa Rosa and throughout Marin and Sonoma counties is a split system comprised of a gas furnace, an indoor evaporator coil, and an outdoor condensing unit. The two split parts of this type of AC are connected with copper refrigerant piping. The sequence of operation starts with the thermostat calling for cooling, the furnace blower motor will then provide the airflow. Next, the evaporator coil absorbs the heat from the air and the outdoor unit dissipates the heat into the outdoor.

We Service All Types on Air Conditioners in Santa Rosa

  • Split systems with air handlers: For a home with radiant floor heating throughout and requires air conditioning to the second floor, a split system with an air handler is a good option. The air handler serves as the indoor unit that contains the evaporator coil and the air blower while the outside unit contains the condenser. The two units are connected with copper refrigerant piping.
  • Rooftop package units: These ACs are used mostly on commercial rooftop applications. A package unit has the gas furnace, evaporator coil, and condensing unit built into a pre-assembled, factory-built unit. They are on the roofs of some buildings and, in certain applications, sit on the ground adjacent to the home. This type of equipment can be useful for properties that have no attic or crawlspace to accommodate heating or cooling equipment.
  • Mini-split or ductless air conditioning systems: As the name implies, these ACs need no ductwork. They are used to spot heat or cool one room or can be combined to zone heat or cool an entire house. Mini-split systems are best in Eichler homes where there is no attic or crawl space. Mini-splits are also a great alternative to noisy window air conditioners.
  • Ground-source or geothermal heat pumps: A heat pump is an air conditioner that is reversible. When a heat pump is in air conditioning mode, it extracts heat from within the home and dumps it outside. In heating mode, the ground-source heat pump extracts heat from the ground and transfers it into the home’s duct system or radiant heating system. This type of system is very common in climates that have extremely hot summers and very cold winters.

Annual Preventive Maintenance Is a Must

It is important to do a thorough annual inspection, maintenance, and testing of your air conditioning system before the hot weather or heatwave is upon us. There are a very limited number of qualified air conditioning technicians in Santa Rosa. If your air conditioning breaks down during a hot spell, it could be days before a technician could become available. We and all other air conditioning contractors run waiting lists during hot spells. Don’t be caught out—call us and book an air conditioning maintenance as soon as you can.

Our AC maintenance checklist includes:

  • Checking the outside of the condensing unit for dirt and debris
  • Checking inside the evaporator coils for debris buildup or a loose or incorrectly positioned thermal expansion valve sensor
  • Verifying the refrigerant charge
  • Testing for proper and safe operation
  • Inspecting the relays, contactors, and capacitors for signs of wear
  • Checking and cleaning condensate drain
  • Checking and replacing air filters
  • Recording temperatures and pressures for each system to help us diagnose future problems

The John Owens Way

Our philosophy is simple, we always want to maintain equipment to give it the longest life possible. Next, we want to focus on repairing when something goes wrong. Then only as the last choice, we replace equipment when needed. That’s the John Owens Way.

San Rafael
(415) 942-6565
Santa Rosa
(707) 452-3464



Regular maintenance keeps your home’s systems running well all year long. We’ll help you gain efficiency and save money.



When something breaks down, our team will get to you fast. We’ll find the problem and fix it to get you back to normal.



When it’s time to replace something in your home, we’ll help you get a top quality product that matches your specific needs.
San Rafael
(415) 942-6565
Santa Rosa
(707) 452-3464