Tekmar Controls 562 Thermostat 321894-709 Signs of failure include a

Signs of failure include a furnace that won't ignite

Johnson Controls P20BA-22 Pressure Control

Direct OEM Fit: Drop-in HC33GE240 replacement eliminates lead-lag issues and ensures correct mounting alignment for condenser fan 1173774 assemblies

Direct OEM Compatibility: Engineered as a precise 622624R alternative and 918873 replacement

when installed according to UL 98 standards and local electrical codes

Tekmar Controls 562 Thermostat 321894-709 Signs of failure include aFor veteran HVAC contractors managing multi stage systems, the Tekmar Controls 562 Thermostat delivers site proven reliability with a 2H 1C 7DAY PRO WIFI 24V configuration. This WiFi touchscreen thermostat is engineered to handle two stage heating and one stage cooling, specifically tailored for radiant floor heating and forced air compatibility. Its 7 day, 4 event programmable schedule allows for granular control, while the Watts Home mobile app