The time period “EMER” on a thermostat sometimes refers to “Emergency Warmth.” This setting prompts a secondary heating system, normally electrical resistance warmth, to offer heat when the first heating supply (resembling a warmth pump) is unable to take action effectively or has failed. As an example, if a warmth pump malfunctions throughout extraordinarily chilly climate, participating the emergency warmth perform ensures the constructing maintains a liveable temperature.
Emergency warmth serves as an important backup, particularly in areas with extreme winters. Its activation prevents pipes from freezing and protects occupants from dangerously low indoor temperatures. Traditionally, this performance has been a normal characteristic on warmth pump thermostats, providing a security internet and sustaining consolation ranges throughout unexpected system failures or excessive climate circumstances.