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Ductless Heat Pump Split Systems

Bosch Ductless Product Group

What are Ductless Heat Pump Systems?

Electrification is happening all across America! Whether you need heating or cooling in one room or the entire home, ductless (previously called mini-splits) inverter heat pump systems can be a perfect solution. These systems provide energy-efficient, on-demand comfort that are flexible, simple to install, and easy to maintain.

Many really old homes in our area still have a natural gas fired hydronic (either water or steam) boiler, or baseboard electric for heating the home. Many of these same homes have never had air conditioning and there is no easy way to install a ducted system, because of lack of space in attics, ceilings, or crawlspaces.

Ductless inverter heat pump systems provide a great solution, because with a multi-zone outdoor inverter heat pump condensing unit (ODU), homeowners may add multiple indoor air handlers (IDU) for several rooms, thus heating and cooling with the highest of efficiency.

“Cold Climate” ductless inverter heat pumps can sometimes provide heat down to -20 degrees F (and lower sometimes), without losing very much heating capacity. Homeowners often times keep their old boiler, or electric baseboard heat as a “back-up” system for the lowest of temperatures.

Manufacturers are working fast on developing systems that utilize these highest of efficiency cold climate outdoor inverter condensing units (ODUs) that can be connected to “ducted” indoor air handlers to take advantage of the utility savings available.

How it Works

Heat Pump Operation in Summer Months
Heat Pump Operation in Summer Months

Heat Pump Principle (When Heating)

Refrigerant and Heat Circulation

Heat Pump Principle Diagram

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