White-rodgers 1f56-306 Non-mercury Thermostat 1H 1C 24V

Product Description

The WHITE-RODGERS 1f56-306 is a non-mercury, snap-action mechanical thermostat designed for single-stage heating and cooling control in residential and light commercial HVAC systems. Operating on a 24-volt control circuit, it handles one heat and one cool zone with a setpoint range of 50 to 90 degrees F. Mercury-free construction makes disposal simpler and keeps the unit compliant with environmental regulations in jurisdictions that restrict mercury-containing components. Licensed HVAC technicians and skilled service contractors are the typical installers. The unit measures 4.5 inches wide by 3.25 inches tall by 1.625 inches deep and provides a straightforward, no-frills interface suited for replacement work where simplicity and reliability matter.

This thermostat is suited for residential and light commercial applications using gas, oil, or electric heating and cooling systems. Its snap-action mechanism delivers a crisp switching response at the setpoint, reducing the risk of short-cycling. Terminal connections include RC, RH, W, Y, O, B, G, and A, covering conventional and heat-pump wiring configurations. This makes it a practical replacement candidate in a broad range of installed equipment. The manufacturer equivalent for this unit is listed as 1F56N-444.

Key Features

• Non-mercury snap-action switching — no mercury disposal concerns
• 24-volt control circuit compatible with standard HVAC low-voltage systems
• 1 heat / 1 cool single-stage control
• Setpoint range of 50 to 90 degrees F
• Terminal strip includes RC, RH, W, Y, O, B, G, and A for conventional and heat-pump wiring
• Compatible with gas, oil, and electric heating and cooling systems

Compatibility

Listed as a replacement for part numbers 1F56-301 and 1F56-444. Designed for gas, oil, and electric forced-air heating and cooling systems wired for 24-volt single-stage control.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with low-voltage thermostat wiring per NEC guidelines. Power down the air handler or furnace at the disconnect or breaker before disconnecting the existing thermostat. Label all wires before removal to ensure correct terminal reassignment. Do not apply line voltage to the 24-volt control terminals.

Technical Specifications

• Control Voltage: 24 volts
• Stages: 1 Heat / 1 Cool
• Switching Type: Snap action
• Setpoint Range: 50 to 90 degrees F
• Terminals: RC, RH, W, Y, O, B, G, A
• Compatible Systems: Gas, Oil, Electric
• Width: 4.5 inches
• Height: 3.25 inches
• Depth: 1.625 inches
• Mercury Free: Yes
• Thermostat Type: Mechanical
• Manufacturer Equivalent Part: 1F56N-444

Standard Information

• Brand: WHITE-RODGERS
• Manufacturer Part Number: 1f56-306