Enhanced Durability: Constructed with high-temperature resistance wire to minimize oxidation and element fatigue

Standard Fitting: Features a universal 1-inch NPSM screw-in thread for streamlined installation

making it suitable for standard indoor installations and exposed runs where UV exposure is a factor

meaning it will re-close the circuit once system pressure drops back to the 300 PSI threshold

IO Hvac Controls iO-DFK Dual Fuel Kit 326058-758 Enhanced Durability: Constructed with high-temperatureThe iO DFK Dual Fuel Kit provides seamless management for hybrid heating systems combining an electric heat pump with a fossil fuel furnace. Engineered for simplified dual fuel heat pump control, this kit handles up to 4 stages of heating and 2 stages of cooling. It utilizes professional quiet relay technology to prevent the heat pump and furnace from operating simultaneously, effectively protecting the compressor. The included iO DFK ODT outdoor