A heat pump works best when the temperature is above 40. Once outdoor temperatures drop to 40 degrees, heat pumps start losing efficiency, and they consume more energy to do their jobs. When temperatures fall to 25 to 30 degrees, a heat pump loses its spot as the most efficient heating option for an Atlanta home.
Unless you use a heat pump with auxiliary electric resistive heat it is cheaper to turn the heat off during the day. The same goes for air conditioning.
Use the “heat” or “cool” setting on the thermostat or control rather than the “auto”. It is natural to think “auto” mode would be more efficient. It is not. Your heat pump will operate best when set on “heat' or “cool”.
How do I run my heat pump efficiently? Use the timer to warm the room just before you get home and switch off when you don't need it. Set the thermostat between 19ºC and 21ºC — this keeps your home warm and dry, while saving power. Set the fan to 'auto' mode — this will let the pump optimise its fan speed.
But why is 68 degrees the best winter thermostat setting? In winter, heat loss through walls, windows, and doors is a significant contributor to energy wastage. At 68 degrees, your heating system provides enough warmth to counteract this heat loss.
Very Cold or Hot Weather
In more extreme temperatures, air source heat pumps require more electricity to warm or cool the air in your home. Increased electricity usage reduces the heat pump's efficiency and drives up the costs of running it. Air source heat pumps transfer rather than generate heat.
Heat pumps are designed to run continuously. A good starting temperature to set is 68 degrees Fahrenheit.
The ideal heat pump effective operating temperature for cooling is 20 degrees lower than the outdoor temperature. To maximize heat pump cooling efficiency in the summer, you should never set your heat pump temperature higher than 80 degrees Fahrenheit, which is sufficient on the hottest days of 100-degree weather.
' To achieve an optimal balance between performance and energy usage, we recommend that you set your heat pump / air conditioner temperature between 23-26 degrees (cooling) in summer and 18-21 degrees (heating) in winter.
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It is logical to assume setting to 'Auto' mode will maximize a heat pump's operation, but it actually results in the unit unnecessarily toggling between heating and cooling mode. To ensure your heat pump operates most efficiently, put it on either the 'Heating' setting or the 'Cooling' setting.
Heat pumps work most efficiently when maintaining a temperature. Consequently, it is recommended to lower your set point by 3˚ – 5˚ when your system is in the unoccupied or night setting. Most of today's thermostats are programmable and allow you to set a schedule to match your preference.
In fact, heat pumps can save homeowners 40% on their monthly energy bill compared to a furnace system due to their higher efficiency. When it comes to heat pump energy consumption, there are several factors to consider, such as the size and model of the pump, its efficiency rating, and the size and climate of the home.
For this reason, heat pumps start to lose efficiency at around 40 degrees F and become less efficient than furnaces at around 25 degrees F. Heat pumps continue to be effective at cooling the indoors, even at high temperatures.
Heat pumps operate most efficiently when holding a steady temperature.
While there are occupants in the house, it is advised for homeowners to set their thermostats between 68 and 72 degrees to promote maximum comfort. A pleasant temperature for everyone in the house, regardless of the apparel they are wearing, is between 68 and 72 degrees, which is neither too warm nor too cool.
“Auto” mode could cause your heat pump to heat on a cool summer night or cool on a sunny fall or winter afternoon. To avoid accidentally cooling during the fall and winter, use “Heat” mode.
A heat pump is an electrical appliance, so running one will add to your electrical use. In many cases, however, that additional electrical use is offset by savings elsewhere. You may also decide that the increased comfort is worth the additional energy costs.
In winter, adjusting the heat pump temperature to around 20ºC to 23ºC (68ºF-74ºF) helps reduce the strain on your heat pump system and minimizes energy consumption while still ensuring a comfortable indoor environment.