it is best practice to verify the condition of your existing thermocouple or thermopile and replace it simultaneously to ensure the entire ignition circuit is refreshed

Dual-Fuel Versatility: Includes a dedicated propane conversion kit with the correct regulator spring for reliable LP gas distribution

Enhanced System Reliability: As a non-programmable switching thermostat

providing the precision arc necessary for reliable burner ignition

Direct Compatibility: Identical to manufacturer part numbers 909AG-A and 909-AG-A for seamless fitment on Series 909 RPZ units

Carrier CRHEATER101A00 Heater Kit 322838-754 it is best practice toThe Carrier CRHEATER101A00 Heater Kit is an essential field installed accessory designed to provide reliable supplemental heat for small rooftop units (RTU) and electric cooling or heat pump systems. Engineered for seamless integration, this 4. 4kW electric heater operates at 208 240V and is optimized for 3 to 12. 5 ton units. As a veteran grade HVAC replacement part, it ensures precise climate control during peak winter loads without the need for