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1-Stage Heat Pump Thermostats:
If your old Thermostat wiring terminals (Located on the thermostat sub base) have just one "W" or "W1" this normally indicates you have just a Singe Stage Heat Pump Thermostat. If your System has more than one "W" or back up Heat Strips you will need to purchase a two Stage Heat Pump Thermostat.
Can you use a 2-Stage Thermostat on a Single Stage Heat Pump System? Absolutely! Just match your existing wiring to the same connection on the new thermostats wiring sub-base. It's that easy.
2-Stage Heat Pump Thermostats:
Choosing the Proper Heat Pump Thermostat. If your old Thermostat has an Emergency Heat Switch Located on the switching plate this means you will need to purchase a 2-Stage Heat Pump Thermostat. If your Heating System has back-up Heat Strips you will also need to purchase a 2-Stage Heat Pump Thermostat.
3-Stage Heat Pump Thermostats:
A 3-Stage Heat Pump Thermostat is used when there are two separate heating systems working together such as Gas Heating, Hot Water or Ground Source. A
3-Stage Heat Pump Thermostat will bring on each separate system one at a time depending on the indoor temperature at a given time.
Heat Pump Thermostat on a Gas Heating System:
A heat Pump Thermostat can also be used on most all Gas Heating Furnaces. Just match up your wiring to the correct terminals. It's that easy. But most all Gas Heating thermostats cannot work on a Heat Pump System in most cases.
Thermostat Settings
You can easily save energy in the winter by setting the thermostat to 68°F (20°C) when you're at home during waking hours, and lowering it when you're asleep or away from home. This strategy is effective and inexpensive if you are willing to adjust the thermostat by hand and wake up in a chilly house. In the summer, you can follow the same strategy with central air conditioning, too, by keeping your house warmer than normal when you are away, and lowering the thermostat setting to 78°F (26°C) only when you are at home and need cooling.
Common Misconceptions
A common misconception associated with thermostats is that a furnace works harder than normal to warm the space back to a comfortable temperature after the thermostat has been set back, resulting in little or no savings. This misconception has been dispelled by years of research and numerous studies. The fuel required to reheat a building to a comfortable temperature is roughly equal to the fuel saved as the building drops to the lower temperature. You save fuel between the time that the temperature stabilizes at the lower level and the next time heat is needed. So, the longer your house remains at the lower temperature, the more energy you save.
Another misconception is that the higher you raise a thermostat, the more heat the furnace will put out, or that the house will warm up faster if the thermostat is raised higher. Furnaces put out the same amount of heat no matter how high the thermostat is set-the variable is how long it must stay on to reach the set temperature.
In the winter, significant savings can be obtained by manually or automatically reducing your thermostat's temperature setting for as little as four hours per day. These savings can be attributed to a building's heat loss in the winter, which depends greatly on the difference between the inside and outside temperatures. For example, if you set the temperature back on your thermostat for an entire night, your energy savings will be substantial. By turning your thermostat back 10° to 15° for 8 hours, you can save about 5% to 15% a year on your heating bill-a savings of as much as 1% for each degree if the setback period is eight hours long. The percentage of savings from setback is greater for buildings in milder climates than for those in more severe climates. In the summer, you can achieve similar savings by keeping the indoor temperature a bit higher when you're away than you do when you're at home.
To maximize your energy savings without sacrificing comfort, you can install an automatic setback or programmable thermostat. They adjust the temperature setting for you. While you might forget to turn down the heat before you leave for work in the morning, a programmable thermostat won't! By maintaining the highest or lowest required temperatures for four or five hours a day instead of 24 hours, a programmable thermostat can pay for itself in energy saved within four years.
Heat Pump Operation
CLICK HERE for information on HEAT PUMP OPERATION:
http://www.cowlitzpud.org/Quick_guide_heat_pump_operation.pdf
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