Resideo T812A1002 is a mercury-free, low-voltage mechanical thermostat for single-stage heat-only applications. Rated 18–30 Vac (20–30 Vac supply), it features a snap-acting bimetal SPST switch with ±3°F accuracy and a 50–90°F setpoint range. Ideal for gas, oil, and millivolt floor/wall furnaces. Includes wallplate, mounting hardware, and resistor assembly for universal retrofit compatibility.
Resideo T812A1002 Heat-Only Thermostat 24V
Resideo
$0.00
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- OEM / cross-reference
- T810D1003, T810D1011, T810D1052, T810D1094, T810D1136
- Fits brands
- Honeywell
- SKU:
- T812A1002
- Product Type:
- Mechanical Thermostat
- Subcategory:
- Heat-Only
- Application:
- Residential
- System Type:
- Furnace
- Installation Type:
- OEM Replacement
- Voltage:
- 18-30 Vac
- Mounting Type:
- Square
- Setpoint Range:
- 50°F to 90°F
- Control Type:
- Non-Programmable
- Switch Action:
- SPST
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