Instead of generating higher-temperature heat in intermittent blasts, heat pumps generate lower-temperature heat continuously. An air-source heat pump releases air that's in … Your Nest Thermostat will automatically switch to Eco Temperatures when nobody's home. Now I am wondering if it may be costing us more money than we are saving. Whenever you see a green leaf and Eco on your Nest Thermostat or Nest app that means you are saving energy! Hopefully this article has helped answer that question, and any others about heat pump temperature ranges, and what you can do to improve heat pump performance when it gets below 25-30 degrees. While the Nest will learn your habits over time, many people prefer to have mostly-full control over the temperature of their living space. Please click on this link to know more about this. Generally speaking, a natural gas furnace will release heat that's at least 120 degrees. Heat pumps look similar to air conditioners, so check the label on your outdoor unit to make sure it’s a heat pump. The Eco Temperature ranges you can choose from … Final Thoughts: At What Temperature is a Heat Pump Not Effective? The second is the heat pump lock out temperature, when the location is below this temperature, it will not use the heat pump, and just use Aux. Thanks for reaching out. If the customer has a heat pump system, they can change the lockout temperature on the thermostat. When the temperature approaches 35 degrees, the heat pump runs less than 25% of the time, even at night. For heatpump systems, its also crucial to know and set the minimum outdoor temperature that the heat pump can run with - otherwise the thermostat will lock out the heatpump and change over to aux heat as the weather outside will be too cold to run the heatpump unit that's sitting outside. When I moved in, the heat pump compressor lockout (thermostat setting 0350) was set at 35 degrees. Also, both the heat pump and the electric backup run on very short cycles. For the more old school among you, setting a schedule is a good option. The Nest thermostat is compatible with these systems and supports up to 2 alternate heat sources. I understand that in a typical operation, when the outside temperature goes low enough, the heat pump cannot produce much heat. ft. house heated by two electric heat pumps with an electric coil backup. You have a dual fuel system if you have a furnace inside of your home, and a heat pump on the outside of your home. We have a 4,000 sq. Page 24 Heat Pump: Both auxiliary and compressor lockout temperatures can be changed in the Heat Pump section of the Advanced Settings menu. Air-source heat pumps work on a novel principle: instead of directly producing the heat that you need to keep warm through the winter, the heat pump will find heat energy in the outside air and bring it into your home, using refrigerant as the medium of heat exchange.. By default, Nest will lock out the Setting compressor and auxiliary heater when the outdoor temperature is above 50°F but will not lock out auxiliary lockout temperatures the compressor at any temperature. I want to use the Heat pump as much as possible. What temp should the compressor lockout be set? We live near Louisville, KY and keep our thermostat at 69 during the day an 63 at night. There are two different lockout temperatures that are set on the Nest. I got several answers to this question during the bid process. So you were wondering, at what temperature is a heat pump not effective? By default Nest will activate the heat pump balance, which then automatically determines the aux heat lockout temperature. Nest 3rd gen model will turn ON the aux heat system only when it is necessary (only when the outside temperature falls below the aux heat lockout temperature). I just had a new Bryant heat pump and propane furnance installed. Hello. 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