What It Is Technically, a heat pump is a mechanical-compression cycle refrigeration system that can be
reversed to either heat or cool a controlled space. Installation for
this type of system typically consists of two parts: an indoor unit
called an air handler and an outdoor unit similar to a central air
conditioner, but referred to as a heat pump. A compressor circulates
refrigerant that absorbs and releases heat as it travels between the
indoor and outdoor units.
How It Works Think of a heat
pump as a heat transporter constantly moving warm air from one place to
another, to where its needed or not needed, depending on the season.
Even in air that's seems too cold, heat energy is present. When it's
cold outside a heat pump extracts this outside heat and transfers it
inside. When it’s warm outside, it reverses directions and acts like an
air conditioner, removing heat from your home. One advantage
of a heat pump is that it moves heat instead of generating heat, giving
you more energy efficiency. Also, it is powered by electricity, so you
can save substantially on fuel consumption. For example, a Trane XL20i heat pump is among the HVAC industry’s most efficient, with a rating up to 19.00 SEER and 9.00 HSPF.
Note that heat pumps are best for moderate climates, and a supplemental
heating source may be needed for lower temperatures. As a year-round
solution for home comfort, Trane heat pumps can become a key part of
your matched system. An independent Trane dealer can help you decide if a
heat pump system is right for you.
Is a Heat Pump Right For My Home? In all electric applications, the heat pump may consume less energy than an electric furnace or air handler with
an added electric heater accessory. Why? Because it can deliver the
same amount of BTUs as electric heaters using less electrical input. In
moderate climates the savings that natural gas yields may not be as
advantageous as in colder climates, since there is less frequent use of
the furnace in milder climates. Of course, the heat pump can be matched
with a gas furnace where preferred. The heat pump is effective by
itself down to temperatures around 25 to 30 degrees Fahrenheit. At that
point, either a gas furnace or an air handler with supplemental
electric heat will kick in and help heat your home.
To
determine which system would serve your specific needs best, your local
Trane Comfort Specialist should perform a load calculation on your
home and then estimate the cost of operation for the different
combinations of equipment.