Q?What is a ductless heat pump (DHP)?

It is a highly efficient zonal heating and cooling system that does not require the use of air ducts. Ductless heat pump systems consist of an outdoor compressor unit and one or more indoor air-handling units linked by a refrigerant line. Indoor units are typically mounted high on a wall or ceiling covering a 3″ hole where the refrigerant line passes through to the outside unit, which is mounted at the base of the house. Each indoor unit corresponds with a heating and cooling zone that can be controlled independently.

Q?Do I still need my old heaters?

While a DHP system can be used as a primary heat source, most homeowners are encouraged to keep their exisiting heating units to supplement the DHP system in extreme weather conditions or in hard to reach extremities of the home.

Q?How does a ductless heat pump work?

Ductless heat pumps are reversible, 2-way heat pumps that use electricity to transfer heat between outdoor and indoor air by compressing and expanding a refrigerant. Using a refrigerant vapor compression cycle, they collect heat from outside the house and deliver it inside on the heating cycle, and vise versa on the cooling cycle. DHPs use variable speed compressors with “inverter technology” (AC to DC) to continuously match the heating/cooling load, avoiding the on/off cycling of conventional electric resistance and central heating systems that is associated with the uncomfortable temperature variations and high energy consumption.

Q?What is a ductless heat pump system?

Ductless Systems consist of several parts:
•An outdoor unit that contains a condensing coil, and inverter-driven variable speed compressor, and expansion valve and a fan to cool the condenser coil.
•An indoor unit that contains an evaporator and a quiet oscillating fan to distribute air into the space.
•A refrigerant line-set that is made of insulated copper tubing and is housed in a conduit alongside a power cable, and a codensation drain.
•A remote control that can be used to set the desired temperature and program in night-time settings.

Q?How is the system controlled?

The system is controlled with a remote control that also functions as a programmable thermostat. Most systems offer various modes of operation such as quiet, high or timer. Wall mounted controls are also available.