Furnace Thermostat with Auto Reset, 1/4" Terminal, SLS140

Furnace Thermostat | SLS140 | Auto Reset | 140°F Cut-Out / 100°F Cut-In

Maintain safe and efficient heating system operation with this brand-new SLS140 auto reset furnace thermostat. Designed to cut out at 140°F and reset at 100°F, this compact 1/2" bimetal disc switch features 1/4" terminals and belongs to the trusted SLS Seriesoffering proven reliability, versatile fitment, and cost-effective performance for residential and light commercial HVAC systems.

Features & Benefits:

• Auto reset functionality for continuous thermal cycling


• 140°F cut-out / 100°F cut-in temperature range


• 1/4" quick-connect terminals for easy installation


• Compact 1/2" bimetal disc configuration


• Brand New Unused and ready to install

Replaces Part Numbers:

Direct replacement for thermostats matching SLS140 specifications. Please verify terminal size and temperature ratings before ordering.

Fits Models:

Compatible with select furnace and HVAC systems requiring auto reset thermostats with 140°F cut-out and 100°F cut-in settings. Refer to your units service manual or model tag to confirm compatibility. Contact us if you need help verifying fitment.

Installation Tips:

• Disconnect power before servicing your furnace or HVAC unit


• Locate the thermostat near the heat source or plenum


• Remove mounting hardware and disconnect wire terminals


• Install the SLS140 in the same orientation and location


• Reconnect wires securely, restore power, and test system operation

Installation Disclaimer:

This thermostat is intended for use by licensed HVAC professionals or individuals with proper repair experience. Buyer is responsible for verifying compatibility and ensuring safe installation. Improper handling may result in equipment damage, fire hazard, or personal injury. Seller assumes no liability for misuse or incorrect application.

Auto reset performance. Compact reliability. Upgrade your furnace with the SLS140 thermostat today.