40VA Power Rating: Provides ample current for modern electronic controls and multiple 24V accessories

preventing steam loss and maintaining system efficiency

Precise Modulation: Includes high-accuracy 66

Four Inline Ports: Simplifies the use of large diameter hoses for faster HVAC evacuation across multiple connection points

Engineered for high volume output thermostats

Resideo GS250 Thermometer 40VA Power Rating: Provides ampleThe Resideo GS250 Thermometer is a heavy duty industrial temperature gauge designed for accurate monitoring in hydronic heating and cooling systems. Engineered as the direct replacement for the legacy 4004 53 series, this analog thermometer features a sweat brass well to ensure a secure, leak proof installation while providing excellent thermal conductivity. The dual scale dial displays temperature in both Fahrenheit and Celsius, allowing technicians