Resideo T812C1000 Thermostat
HomeStore

Resideo T812C1000 Thermostat

Resideo T812C1000 Thermostat

The Resideo T812C1000 is an industrial-grade mechanical thermostat designed for reliable control of conventional heating and cooling systems. Operating on a 24VAC circuit (18-30Vac range), this non-programmable thermostat utilizes a snap-acting bimetal switch to provide crisp, positive contact for 1H/1C stages. This professional-grade control features SPST switching action and a wide setpoint range of 45°F to 95°F, maintaining a +/- 3-degree accuracy essential for consistent climate regulation. For service technicians, the T812C1000 serves as the direct replacement for PSM40 and PSM40SA models, often found in light commercial and residential low voltage HVAC systems. The unit includes a standard subbase with Off-Heat-Cool and Auto-On fan switching configurations, ensuring compatibility with standard 4-wire or 5-wire setups. Built for durability in various environments, it operates efficiently within a 5-90% non-condensing relative humidity range. The package includes the Premier White faceplate, resistor assembly, and necessary mounting hardware for immediate installation.

Key Technical Benefits:

  • Direct Compatibility: Engineered as a drop-in replacement for T812C series and legacy PSM40/PSM40SA mechanical controls.
  • Mechanical Reliability: The snap action switch eliminates the need for batteries, reducing nuisance service calls related to power failure.
  • Versatile Application: Suitable for single stage heat and cool systems, including gas, oil, or electric furnaces and central air conditioning.
  • Integrated Subbase: Features manual system and fan switches for simplified user interface and robust terminal connections for 18-gauge wiring.
  • Ease of Installation: Includes a dedicated wallplate, wall anchors, and a resistor assembly to stabilize cycles on specific heating circuits.

Common Technical Questions:

Is the Resideo T812C1000 compatible with heat pumps?
No, this model is designed for conventional systems and does not support the reversing valve logic required for heat pump applications.

Does this thermostat require a common wire (C-wire)?
As a mechanical snap acting thermostat, it does not require a constant C-wire for power; however, standard wiring practices for the 24V control circuit still apply.

Can this replace a millivolt fireplace thermostat?
The T812C1000 is rated for 18-30Vac systems. For millivolt applications, technicians should verify the specific voltage draw to ensure the snap-acting contacts will trigger the gas valve correctly.

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.

$10.51

Original: $30.02

-65%
Resideo T812C1000 Thermostat

$30.02

$10.51

Resideo T812C1000 Thermostat

The Resideo T812C1000 is an industrial-grade mechanical thermostat designed for reliable control of conventional heating and cooling systems. Operating on a 24VAC circuit (18-30Vac range), this non-programmable thermostat utilizes a snap-acting bimetal switch to provide crisp, positive contact for 1H/1C stages. This professional-grade control features SPST switching action and a wide setpoint range of 45°F to 95°F, maintaining a +/- 3-degree accuracy essential for consistent climate regulation. For service technicians, the T812C1000 serves as the direct replacement for PSM40 and PSM40SA models, often found in light commercial and residential low voltage HVAC systems. The unit includes a standard subbase with Off-Heat-Cool and Auto-On fan switching configurations, ensuring compatibility with standard 4-wire or 5-wire setups. Built for durability in various environments, it operates efficiently within a 5-90% non-condensing relative humidity range. The package includes the Premier White faceplate, resistor assembly, and necessary mounting hardware for immediate installation.

Key Technical Benefits:

  • Direct Compatibility: Engineered as a drop-in replacement for T812C series and legacy PSM40/PSM40SA mechanical controls.
  • Mechanical Reliability: The snap action switch eliminates the need for batteries, reducing nuisance service calls related to power failure.
  • Versatile Application: Suitable for single stage heat and cool systems, including gas, oil, or electric furnaces and central air conditioning.
  • Integrated Subbase: Features manual system and fan switches for simplified user interface and robust terminal connections for 18-gauge wiring.
  • Ease of Installation: Includes a dedicated wallplate, wall anchors, and a resistor assembly to stabilize cycles on specific heating circuits.

Common Technical Questions:

Is the Resideo T812C1000 compatible with heat pumps?
No, this model is designed for conventional systems and does not support the reversing valve logic required for heat pump applications.

Does this thermostat require a common wire (C-wire)?
As a mechanical snap acting thermostat, it does not require a constant C-wire for power; however, standard wiring practices for the 24V control circuit still apply.

Can this replace a millivolt fireplace thermostat?
The T812C1000 is rated for 18-30Vac systems. For millivolt applications, technicians should verify the specific voltage draw to ensure the snap-acting contacts will trigger the gas valve correctly.

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.

Product Information

Shipping & Returns

Description

The Resideo T812C1000 is an industrial-grade mechanical thermostat designed for reliable control of conventional heating and cooling systems. Operating on a 24VAC circuit (18-30Vac range), this non-programmable thermostat utilizes a snap-acting bimetal switch to provide crisp, positive contact for 1H/1C stages. This professional-grade control features SPST switching action and a wide setpoint range of 45°F to 95°F, maintaining a +/- 3-degree accuracy essential for consistent climate regulation. For service technicians, the T812C1000 serves as the direct replacement for PSM40 and PSM40SA models, often found in light commercial and residential low voltage HVAC systems. The unit includes a standard subbase with Off-Heat-Cool and Auto-On fan switching configurations, ensuring compatibility with standard 4-wire or 5-wire setups. Built for durability in various environments, it operates efficiently within a 5-90% non-condensing relative humidity range. The package includes the Premier White faceplate, resistor assembly, and necessary mounting hardware for immediate installation.

Key Technical Benefits:

  • Direct Compatibility: Engineered as a drop-in replacement for T812C series and legacy PSM40/PSM40SA mechanical controls.
  • Mechanical Reliability: The snap action switch eliminates the need for batteries, reducing nuisance service calls related to power failure.
  • Versatile Application: Suitable for single stage heat and cool systems, including gas, oil, or electric furnaces and central air conditioning.
  • Integrated Subbase: Features manual system and fan switches for simplified user interface and robust terminal connections for 18-gauge wiring.
  • Ease of Installation: Includes a dedicated wallplate, wall anchors, and a resistor assembly to stabilize cycles on specific heating circuits.

Common Technical Questions:

Is the Resideo T812C1000 compatible with heat pumps?
No, this model is designed for conventional systems and does not support the reversing valve logic required for heat pump applications.

Does this thermostat require a common wire (C-wire)?
As a mechanical snap acting thermostat, it does not require a constant C-wire for power; however, standard wiring practices for the 24V control circuit still apply.

Can this replace a millivolt fireplace thermostat?
The T812C1000 is rated for 18-30Vac systems. For millivolt applications, technicians should verify the specific voltage draw to ensure the snap-acting contacts will trigger the gas valve correctly.

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.

Resideo T812C1000 Thermostat | GSIstore