White-Rodgers 1F56N-444 Thermostat

For service calls requiring a reliable, mercury-free solution, the White-Rodgers 1F56N-444 Thermostat is the industry standard for 24V 1H/1C systems. This mechanical thermostat features snap-action contacts enclosed in a dust cover to ensure long-term switching reliability in dusty or high-vibration environments. As a universal low voltage heating and cooling thermostat, it provides precise control for single-stage gas, oil, or electric systems. The 1F56N-444 is a robust horizontal thermostat replacement for many legacy mercury models, offering an adjustable heat anticipator from 0.15 to 1.2 Amps for fine-tuned cycle rate management. It is millivolt compatible and designed for easy installation on standard junction boxes or directly to the wall. This unit serves as a 1F56-444 direct replacement and is compatible with several older series, ensuring you have the right part for vintage equipment maintenance without needing to pull new wire.

Direct Replacement for: 1D56-310, 1D30-316, 1D36-316, 1D56-347, 1D56W-347, 1F30-910, 1F35-910, 1F51-609, 1F56-301, 1F56-444, 1F56W-444, and 1F56W-911.

• Universal Application: Compatible with 24V single-stage systems, 750mV millivolt circuits, and 3-wire hydronic zone valves.
• Mercury-Free Design: Reliable snap-action switching eliminates environmental hazards and leveling concerns during mounting.
• Adjustable Heat Anticipator: Customizes the heating cycle from 0.15 to 1.2 Amps to match the specific furnace gas valve or relay.
• System Flexibility: Includes integrated Heat/Off/Cool system switching and Auto/On fan control for simplified user operation.
• Bimetal Accuracy: Built-in thermometer provides accurate room temperature sensing without the need for external power or batteries.

Is the White-Rodgers 1F56N-444 compatible with heat pumps?
It is compatible with conventional single-stage systems and heat pumps that do not require auxiliary heat. For multi-stage heat pump applications, a different control is required.

Does this thermostat require a common wire (C-wire)?
No, this is a mechanical snap-action thermostat that does not require a common wire or batteries for operation.

Can I use this for a 3-wire zone valve system?
Yes, the 1F56N-444 is designed to work with 3-wire zone valve installations and includes a terminal wallplate to facilitate these connections.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.