The Friedrich Air Conditioning 68700193 3.5kW Heater Kit is an electric heating accessory designed to provide reliable supplemental heating for compatible Friedrich HVAC units, including select packaged terminal air conditioners (PTACs). It converts electrical energy into heat, allowing the air conditioning system to deliver warm air during colder conditions without requiring a separa... https://www.partshnc.com/68700193-friedrich-air-conditioning-35kw-heater-kit