What Is a Mini-Split Ductless System?

Ductless mini-split systems are heating and cooling systems that work without the ductwork that’s needed in a traditional central HVAC system. In their truest form, they consist of one indoor unit and one outdoor unit - usually a mini-split heat pump. Instead of being connected by ductwork, the indoor and outdoor units are connected by refrigerant lines.

The indoor units include:

  • Mini-split wall-mounted units 
  • Mini-split ceiling cassette
  • Floor-mounted mini-split units

An experienced HVAC professional can easily install a mini-split HVAC system in most homes. Ductless heating and cooling systems are great comfort solutions for spaces without ductwork such as a home addition, garage, or gym.

There are even ducted mini-split units that can add supplemental heating and cooling to a space that is heated and cooled by a traditional ducted HVAC system.

Multi-Zone Mini-Splits

When multiple mini-split indoor units (up to 8) are tied to an outdoor mini-split heat pump, it’s called a multi-split ductless system or multi-zone ductless system. They offer ductless heating and cooling for an entire home. Each zone has its own indoor unit and a remote control. You can set a different temperature for each zone.

A multi-zone ductless system can be a good solution for both new construction and for comfortable heating and cooling an older home without ductwork. 

Mini-split AC only

If you don’t need heating, but simply want to cool an area such as a garage or home gym, you can opt for a mini-split air conditioner. Learn more about a mini-split AC and if it’s right for you.

American Standard®/Mitsubishi mini-splits

American Standard has a partnership with Mitsubishi Electric. All of our mini-split units, including ductless heat pumps, and indoor units such as wall-mount, floor-mount, and ceiling-mount mini-splits are manufactured in the United States. Learn more about the features of our ductless systems.

To learn more about a mini-split system and get a quote for mini-split installation, contact your local American Standard dealer.

By Anne Fonda, Content Writer

Expert review by Ryan Goodwin, Senior Product Manager, Ductless

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