Empire 18" Hydraulic Thermostat, White 18,000 Btu, Vent-Free Infrared Heater Gas Type:Propane A: The close-on fall feature

A: The close-on fall feature automatically closes the control valve when pressure falls below the setpoint

Experience the superior flame detection capabilities of the Raypak 011752F Flame Sensor Probe Kit today

By effectively regulating the pressure

providing optimal ventilation

offers several key benefits that set it apart from other furnace and heater parts

Empire 18" Hydraulic Thermostat, White 18,000 Btu, Vent-Free Infrared Heater Gas Type:Propane A: The close-on fall featureEmpire builds a full line of heaters for nearly every application from vent free models (in blue flame and infrared) to wall furnaces and console heaters in direct vent and B vent. At more than 90 percent efficient our UltraSaver models provide more heat for your energy dollar than any other vented system you can buy. All of our Empire branded heaters are made in the USA. Vent Free systems draw room air to support combustion in a clean burning blue