How Does A Ductless Mini-Split System Work?

If your home doesn’t have ducts, a central HVAC system isn’t an option unless you have them installed. An alternative is having a mini-split system installed, which will heat and cool your house with no ducts.

How Do Mini-Split Systems Work?

A mini-split system has an outdoor unit and one or more indoor units. The outdoor unit has a compressor and a condenser. Indoor units have a blower, a control panel, and an evaporator. Each one is controlled by a remote. The outdoor and indoor units are connected by tubes containing refrigerants.


In the summer, warm air gets sucked into the indoor units. The warm air goes over the cold evaporator coils, which remove heat from the air. The refrigerant flows to the outdoor unit, where the heat is dumped. In the winter, heat is collected from the outdoor air and released from the indoor units.

Johnson & Johnson Heating and Air Conditioning in Martinsburg, WV, installs and repairs mini-split systems. You can count on us to always do a job right the first time.

What Are the Advantages?

Mini-splits systems are easy to install. They’re less expensive than installing an HVAC system and ductwork. They also eliminate the problem of conditioned air being lost in ductwork.

Additionally, you can zone your house since each indoor unit is independently controlled. This can save you money on your energy bills. You don’t have to heat or cool your entire home, unlike when you have a centralized HVAC system.

How Are the Indoor Units Installed?

The indoor units can be on the floor, suspended from the ceiling, flush with a drop ceiling, or hung on a wall. You can have up to four of them connected to a single outdoor unit.

At Johnson & Johnson Heating and Air Conditioning, we also install, repair, and tune up furnaces, heat pumps, air conditioners, and packaged systems. We can also help you with thermostats, indoor air quality, free energy audits, and duct cleaning. We do light commercial services, too. Call us today to schedule an appointment with one of our NATE-certified technicians.