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Small rectangular auto limit switch with metal terminals and plastic housing

Goodman

Goodman 1370912S Auto Limit Switch

SKU CH-3AGQ-ANSKV

Auto limit switch rated for 1370912 protects HVAC systems from overheating

  • Auto limit switch protects RV furnace from overheating
  • Goodman brand ensures reliable HVAC component quality
  • Direct manufacturer shipping reduces handling time
  • First listed April 29, 2023 for current design
  • Orders of $75 or more ship free from manufacturer

HVAC Auto Limit Switch

The Goodman 1370912S is a replacement safety component designed for heating, ventilation and air conditioning systems. It interrupts the circuit when temperatures exceed a preset limit, protecting equipment from overheating. This part suits technicians and owners servicing compatible Goodman units.

Sustained Operation Behaviour

The switch monitors temperature continuously during extended heating cycles rather than responding only to brief spikes. It maintains its calibrated trip point over repeated use, ensuring consistent protection across long running periods. Reliable cycling prevents nuisance shutdowns while guarding the heat exchanger.

Thermal and Electrical Characteristics

The device reacts directly to the air temperature inside the appliance, opening the control circuit when the limit is reached. Power draw is negligible because the switch is a passive thermal sensor. No fan or active cooling is involved, so the component adds no audible noise to the system.

Highlights

  • Auto limit switch protects RV furnace from overheating
  • Goodman brand ensures reliable HVAC component quality
  • Direct manufacturer shipping reduces handling time
  • First listed April 29, 2023 for current design
  • Orders of $75 or more ship free from manufacturer

Specifications

BrandGOODMAN

Questions about this item

Does the 1370912S auto limit switch draw continuous power or generate heat while the furnace runs all day?

The switch is a passive safety control that only interrupts the circuit when the temperature limit is reached; it does not consume measurable power or produce heat during normal operation.

What existing furnace components must be compatible for the 1370912S to install and function correctly?

The switch mounts in the original equipment bracket and connects to the existing two-wire limit circuit; the furnace must use the same Goodman-spec temperature rating and terminal orientation.

Will the 1370912S work alongside the original control board and blower relay in an older Goodman unit?

Yes, it is a direct OEM replacement designed to operate with the factory control board, blower relay and wiring harness without any firmware or hardware changes.

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