Check the part number on the side of your original compressor start relay to ensure a direct match or verified cross-reference

Automatic Reseating: Engineered for repeated cycles without manual intervention

5" WC Nat to meet strict furnace output requirements and optimize fuel efficiency

install this sight glass in the liquid line immediately after the filter-drier and as close to the expansion device as possible to monitor the condition of the refrigerant entering the evaporator

Laars Heating Systems E2339400 Thermistor 320819-301 Check the part number onThe Laars Heating Systems E2339400 Thermistor is a critical NTC temperature sensor engineered for precise thermal monitoring in high efficiency hydronic boilers and volume water heaters. This OEM replacement part features a robust stainless steel construction to resist corrosion and scaling in demanding heating loops. Designed with a 1 8" NPT connection, the E2339400 thermistor provides accurate resistance to temperature feedback to the main control