Description
The iO HVAC Controls iO-DFK Dual Fuel Kit provides a reliable, professional-grade solution for managing dual-fuel HVAC systems that combine a heat pump with a fossil fuel furnace. Designed for smooth changeover control, the iO-DFK automatically shuts off the heat pump at a pre-set outdoor temperature and allows the furnace to take over, ensuring optimal comfort, efficiency, and system performance.
This easy-to-install kit includes a snap-track mounting base and an outdoor balance point thermostat for precise temperature-based fuel switching.
Features:
- Compatible with Up to 4 Heating Stages & 2 Cooling Stages – Ideal for a wide range of dual-fuel HVAC setups.
- Outdoor Balance Point Thermostat Included – Automatically locks out the heat pump when temperatures drop below the set balance point (factory at 35°F).
- Snap-Track Mounting – Enables fast, clean, professional-looking installations.
- LED Auxiliary Heat Indicator – Provides clear system status visibility during operation.
- Easy-to-Read Screw Terminals – Simplifies wiring for technicians.
- Reversing Valve Selector Switch (O/B) – Universal compatibility with heat pump configurations.
- Optional Discharge Air Thermostat (DFK-DAT) Support – Controls temperature during defrost cycles (set at 90°F).
- 5-Year Warranty – Long-term reliability backed by iO HVAC Controls.
Specifications:
- Model: iO-DFK
- Mounting: Snap track
- Dimensions: 4.00″ H × 4.00″ W × 1.00″ D
- Input Voltage: 24 VAC
- Balance Point Range: 0°–100°F
- Included: iO-DFK-ODT Outdoor Thermostat











