From how heat pumps save energy to how to buy one
Whether you are buying a new home or considering upgrades, an electric heat
pump may be the best solution for your home heating and cooling needs— especially in Phoenix's desert climate.
A heat pump is highly efficient because it doesn't manufacture the heat it distributes.
Instead, it finds heat in the outside air and "pumps" or "moves" it into your home in the winter.
Heat pump benefits
A heat pump can save up to 30% on heating costs when
compared to a gas furnace and provides year-round comfort.
A high-efficiency electric heat pump does a great job of providing
continuous comfort. Gas furnaces often blast certain areas with
heat causing uncomfortable hot spots. Heat pumps provide a more
continuous flow of heat and even temperature.
How heat pumps work
A heat pump works by simply moving heat in or out of your home, depending on whether you set your system to heating or cooling. The only energy used is the relatively small amount of electricity it takes to
transfer the heat.
- Compressor: This increases the pressure of the refrigerant so that it will accept the
maximum amount of heat from the air.
Condenser: Coils that move heat to or from the outside air.
Evaporator: Coils that move heat to or from the air inside the home.
Air handler: Fan that blows the air into the ducts of the home. Components 1, 2, 3
and 4 are found in all standard air conditioners.
Reversing valve: Changes the heat pump from air conditioning to heating, and vice
versa. This is not part of the thermostat.
During the mild winters in metropolitan Phoenix, when temperatures rarely dip
below freezing, there's plenty of heat in the air you can use. In summer, it
pumps heat from inside the house to the outside, providing efficient cooling.
Heat pumps work using heat transference. That is the principle whereby heat
seeks equilibrium when it comes in contact with cold. In other words, heat
goes to cold. For instance, when you're holding a cold can of soda, your hand
feels like it's getting cold. But actually, the heat is leaving your hand and
heating up the soda.
How to buy a heat pump
The Seasonal Energy Efficiency Ratio (SEER) rating is an important
consideration when looking for an electric heat pump. The SEER represents
how efficiently a unit operates. Typically, the higher the SEER rating, the more
efficiently it operates and the more energy you save.
Along with the SEER rating, you need to determine what size the electric heat
pump needs to be. A contractor can help you with this. Your contractor should
take into consideration the square footage of your home, the amount of ceiling
and wall insulation, window area and other crucial variables.
Keep in mind that the lowest price does not always mean the best deal.
Service, proper sizing and quality of insulation make a difference in long-term
operating costs. Ask your contractor questions, because all heat pumps are not alike.
To find a contractor, call the SRP Certified Contractor Program at (602) 274-6808 for a referral.
Still have questions? Ask Jerry
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