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Thermostat and Furnace Compatibility

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Boiler and Oil Fired Systems
Thermostat and Furnace Compatibility

Oil Fired Boiler


Type: Gas Fired Boiler System - Low Voltage
Number of Thermostat Wires: 2 or 3
Voltage: 24 Volts AC
System Attributes: Hot water boiler for radiant heat or baseboard hydronic systems


Type: Oil Fired Boiler System - Low or High Voltage
Number of Thermostat Wires: 2 or 3
Voltage: 24 Volts AC or 120 Volts AC
System Attributes: Hot water boiler for radiant heat or baseboard hydronic systems


Type: Electric Boiler System - Low Voltage
Number of Thermostat Wires: 2 or 3
Voltage: 24 Volts AC
System Attributes: Hot water boiler for radiant heat or baseboard hydronic systems


Type: Oil Fired Furnace System - Low Voltage
Number of Thermostat Wires: 2; with air conditioning 4 or 5
Voltage: 24 Volts AC
System Attributes: Forced air furnace

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