· the setting labeled em heat (or emer heat ) is a safety feature on systems that use a heat pump. This is usually electric resistance heat or, in some systems, a gas furnace. That is why emergency heat should only be turned on when the heat p. Unlike regular heat mode, emergency heat does not attempt to pull warmth from the outdoor air. See full list on thermostating. com · in cold climates, homes with heat pumps often have an emergency heat setting on the thermostat. It can be more expensive to run compared to the primary heat source, such as a heat pump or furnace. · if you look at your thermostat and spot a setting that reads em heat, this refers to the emergency backup heating system that can be turned on if the primary heating system for the home fails. Look for an “ em ” or “emergency heat ” label on the screen when it’s in use. · emergency heat —commonly shown as em or emh on thermostats—bypasses the heat pump entirely and relies on a secondary heat source. Can i use em heat as the primary heat source? Heat pumps work more efficiently than furnaces, but they don’t actually produce heat. What is emergency heat? Because of that that more energy will be consumed and if used for a prolonged period of will it would put strain on the main power supply grid. This is because it uses electrical resistance to produce heat. No, em heat and auxiliary heat are not the same, although they serve a similar purpose. This guide will explain what emergency heat is, when it’s used, and how to manage it correctly. This setting accesses a secondary, or backup, heat source (usually electric) when the heat pump cannot do its primary job. Many heat pump systems are installed with secondary or back heat that can kick in to produce heat for your home when your heat pump can not keep up heating enough in extremely low. Emergency heat or em heat on a honeywell thermostat works by locking out the heat system and only allowing backups such as electric strips to generate heat for your home. Emergency heat can be an expensive form of heating on any heat pump system. If the pump fails, em heat can take over. This mode exists for two main reasons. · the em heat source can be electric, oil, gas, or hot water, and is an important tool to have at your disposal in frigid environments. Em heat is the emergency backup heat that you can manually turn on when the primary heating system fails, while auxiliary heat is a secondary heat source used to supplement the primary heating system during extremely cold weather. However, em heat (which stands for emergency heat ) should only be used in emergencies because of the added strain on both your unit and your bank account. This indicator is short for emergency heat , and can be scary to see, but we’ve put together a guide so you know exactly what to do. Em heat is designed to be a temporary backup heat source and is not intended for long-term use as the primary heating system. Most honeywell thermostats have indicators or symbols on the display to show when em heat is activated. Is em heat the same as auxiliary heat on a honeywell thermostat ? Have you ever glanced at your thermostat on a chilly day and seen the letters “em”? How can i determine if my honeywell thermostat is using em heat ?
