What is the primary difference between the LH660013 and the older LH35XZ001

The Rheem-Ruud 70-42540-04 Blower Shaft is a critical mechanical component engineered for precise torque transmission in commercial and residential air handlers

meaning it will automatically restore the electrical circuit once the temperature cools to 100°F

is a specialized lower quick hook-up fitting engineered for seamless integration with steam boiler safety controls

ensuring stable superheat control across a wide range of evaporation temperatures

Belimo B209+LRB24-3 Valve Assembly Els PW 29614 What is the primary differenceThe Belimo B209+LRB24 3 is a precision engineered 2 way characterized control valve (CCV) assembly designed for modulated or on off control of hot and chilled water in HVAC systems. This 1 2" NPT assembly features a stainless steel ball and stem, ensuring high durability and resistance to scaling in closed loop hydronic systems. With a Cv of 0. 8, it provides accurate flow regulation for terminal units and hydronic heating coils. Paired with the LRB24