Rheem Water Heater Parts SP20166B Water Heater Gas Control Thermostat

The Water Heater Gas Control Thermostat—SP20166B—is a trusted replacement part for natural gas (NG) water heaters. This essential Rheem component helps regulate temperature for consistent hot water, safer operation, and improved energy efficiency.

Designed as a precise thermostat replacement for compatible Rheem units, the SP20166B gas control thermostat coordinates with the gas valve to maintain safe operation and reduce standby losses. Built to endure frequent cycling, it delivers reliable performance across NG fuel setups and supports long service life for your water heating system.

• Compatibility: Rheem SP20166B gas control thermostat for NG water heaters
• Precise temperature regulation for steady hot water and energy efficiency
• Durable construction designed to withstand frequent cycling
• Easy thermostat replacement for standard gas-fired systems
• Reliable water heater parts to maintain safe operation

Keep your system efficient with a trusted water heater part that’s easy to install and built to last.