

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The WILLIAMS COMFORT PRODUCTS GS-3 is a feeler gauge set used to measure small gaps and clearances during combustion appliance service and adjustment. Feeler gauges are precision hand tools that allow technicians to verify and set critical tolerances in burner assemblies, pilot systems, and related components. The GS-3 is a compact, lightweight set suited for field use by licensed HVAC and combustion appliance service technicians. At 0.11 pounds, it is easy to carry in a standard tool pouch without adding bulk to a service kit.
Feeler gauge sets like the GS-3 are used during routine service and tune-up of gas-fired heating equipment, including wall furnaces, floor furnaces, and direct-vent heaters. Technicians use them when inspecting or setting clearances on burner and pilot components that require precise gap dimensions to operate within manufacturer specifications. The set is sold as a single unit and is appropriate for both residential and light commercial service applications.
Designed as an OEM-style service tool for use with gas-fired combustion appliances requiring feeler gauge gap measurement during inspection and adjustment procedures.
Feeler gauges are a hand tool used by qualified HVAC and gas appliance technicians during service, not a replacement part requiring installation. Always shut off gas supply and allow the appliance to cool before performing any inspection or adjustment that requires use of this tool. Follow the appliance manufacturer service manual for required gap specifications and measurement procedures. Refer to applicable local codes and IFGC guidelines when servicing gas-fired equipment.
Thanks for subscribing!
This email has been registered!