26. Why can't system heat up normally until it gets to room temperature instead of auxiliary heat kicking in? Will it cost a lot more money to have the auxiliary heat come on for heating? I like to turn temperature down at night.
If you have a heat pump as your heating system, then an auxiliary heater is needed to help warm up your house during a cold day. If the regular heating system is solely used, it could take forever to warm up the house. As soon as heat reaches up to the set temperature, the heat pump will work on regular heat all the time unless a new set temperature is 3 or more than 3 degrees higher than the room temperature, which will then kick on auxiliary heat. You also can lower the temperature before you go to sleep. If your heating is a natural gas furnace, then an need auxiliary heater is not needed.
27. Is it better to set the thermostat to a high temperature (85° to 90°) while at work all day and cool the house when you get home to a comfortable temperature (approximately 80°), or to keep the thermostat just a degree or two higher during the day so that the cooling unit doesn't have to work as hard during peak hours to cool the house?
It is better to set the thermostat just one or two degree higher, during the day so that the cooling unit doesn't have to work as hard during peak hours to cool the house.
28. is it OK to shut the heating vents in rooms that are unused and closed, so that I can save on heating or cooling cost?
Your cooling cost is determined by the temperature of the thermostat’s location. Therefore, if you close the vents in the room where the thermostat is located, your bill will be higher.
29. Does the design of new residential heat pumps cause lights to flicker in the house?
The lights flickering has nothing to with new or old heat pump design. The moment the compressor starts, it draws 100 to 150 amps of power depending the amount of tonnage heat pump you have. Normally the total power supply for a house is 200 amps, therefore a big draw of power will make light flicker. A hard start kit added on the compressor can reduce this problem.
30. With the commercialization of variable-speed heat pumps, have the benefits of a programmable thermostat been reduced or eliminated?
The variable-speed heat pumps will maximize the benefits of a programmable thermostat.
31. Is it ok to install a different brand of furnace (or air conditioner) to work with my existing air conditioner (or furnace)?
Mixing the existing AC with a different furnace brand is ok, as long as the furnace can provide enough air flow. On the other hand, there might be a compatibility issue with combining different brands, and the warranty become invalid once different brands are combined.
32. what is variable speed?
The variable speed blower motor can automatically adjust the motor speed with the thermostat.
33. Should I upgrade to a Variable Speed fan on my HVAC unit?
This depend on your budget and goal. A variable speed fan can have benefit such as: 1. Runs more quietly. 2. Saves energy. 3. It’s a more powerful system because it has 12 speeds. 4. Removes more moisture from your central air system.