Professionals in the field know that managing thermal expansion and overpressure in high-capacity systems requires a reliable Lochinvar & A

or a weak flame sensor signal

Simplified Maintenance: Direct-fit OEM replacement part reduces labor time during header service or pump replacements

providing significant overload capacity and cooler operation under load

87-inch bolt circle alignment ensures uniform compression and a secure watertight seal between pump housing components

Tekmar Controls 563 Thermostat 322838-752 Professionals in the field knowFor professional contractors managing multi stage conventional or heat pump systems, the Tekmar 563 Thermostat offers a robust, high performance interface for total climate control. This WiFi enabled thermostat serves as a central hub, supporting 2 stage heating and 2 stage cooling in conventional setups, and up to 4 stage heating and 2 stage cooling in heat pump applications. It integrates seamlessly with the Watts Home mobile app, allowing for