Ductless Mini Split Systems Santa Rosa

San Rafael

(415) 942-6565

Santa Rosa

(707) 452-3464


Ductless Mini-Splits in Santa Rosa

Ductless HVAC Solutions in Marin & Sonoma Counties

John Owens Services, Inc. has been active in the installation and servicing of ductless mini-split systems in Santa Rosa and all of Marin and Sonoma counties for decades. Our most popular brand of ductless mini-split systems is Mitsubishi and we are proud to be a diamond contractor.

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What Is A Ductless Mini Split System?

Ductless mini-split systems are versions of heat pumps that use the refrigerant process to heat or cool a conditioned space. As the name implies, a ductless mini-split has no ducts, so it does not gather dust and dirt. Having no ducts also mean the system does not leak expensive heating or cooling energy into your crawlspace or attic. A simple ductless system is comprised of one indoor wall unit connected by small refrigerant piping to one simple outdoor compressor unit.

Are Ductless Mini Splits Worth It?

A ductless system can be used to heat and cool one room only or it can serve multiple areas of a home. One outdoor compressor can be connected to up to eight indoor units. Each indoor unit is self-contained and individually controlled. Ductless mini-splits are the perfect cooling solution for older homes that have no space for ductwork. A good example of an older home retrofit is an Eichler home with a concrete slab and no attic. Eichlers are prime candidates for multiple ductless units. In new construction, the application could be a green, energy-efficient, multi-zone system for a new home.

Mini-splits are predominantly installed because of their:

  • Flexibility for zoning
  • Easy installation
  • High energy efficiency

How Are Ductless Systems Energy-Efficient?

Heat pumps use electricity to pump refrigerant around a system. The energy used is running the pump or compressor. There are no heating elements. Heat pumps extract heat from the outside air when in heating mode or extract heat from the inside air when in cooling mode. Heat pumps can be up to 450% efficient. That means 1 kilowatt in and up to 4.5 kilowatts out. This high efficiency of the refrigerant process makes it very economical for the consumer to use electricity to heat and cool.

Variable speed compressors are the heart of ductless systems. The speed of the compressor varies according to how much work the heat pump has to do. This further improves electrical efficiency, up to 40% less electrical energy used than a conventional single-speed compressor. Multi-zone technology improves the system’s efficiency even more. One only needs to heat or cool the rooms you are using, and different rooms could be on different schedules.

Types of Ductless Mini Split Systems

There are many variations of the indoor units, and each company has a slightly different design to their units.

Depending on your space and preference, we provide an array of ductless mini-split indoor units, such as:

  • Standard wall unit
  • Ceiling cassette
  • Floor mount
  • Mini-ducted system

Ductless Mini Split Installations in Santa Rosa

Installation & Repair of Ductless Mini Split Systems Across Sonoma & Marin Counties!

When it comes to installing ductless systems, the correct sizing is critical. The old rule-of-thumb methods for sizing heating and air conditioning systems do not work. From our decades-long experience in the industry, we always have a good idea of the unit size a home requires. However, the only accurate method is to perform a heat loss/heat cool analysis, also known as Manual J Calculation, of the entire building to calculate the exact heating and cooling requirements of a system before the final selection of the equipment can be made. We use software that performs these calculations to verify the size of the systems needed.

Ductless system installations are very regulated for ultimate energy savings and your peace of mind. We are EPA-certified and air conditioning installation and repair certified. We offer a five-year warranty on parts and labor for all heating and cooling equipment we install. Call us today for an estimate for a new ductless system installation or to schedule annual preventive maintenance for your existing ductless mini-split system in Santa Rosa.

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