Resideo TH115-AF-120S Thermostat 318423-701 How do I verify if

How do I verify if my furnace was made after 2013

The Siemens MXG461 series is compatible with water-glycol mixtures up to a 50% concentration without affecting performance

Use the integrated 1/4" needle drain valve to blow down the gauge regularly to prevent sediment buildup

Confirm that your system is a 3-ton capacity unit utilizing R-22 refrigerant

also identified by model number MA559

Resideo TH115-AF-120S Thermostat 318423-701 How do I verify ifFor contractors and HVAC professionals, the Resideo TH115 AF 120S Thermostat is the industry standard for managing high capacity electric heating systems. Engineered with a dedicated epoxy soundproofed relay, this unit eliminates the invasive clicking noise typical of mechanical line voltage controls, making it ideal for high end residential and commercial floor heating or electric baseboard heater retrofits. This 120 Vac vertical mount controller