Lochinvar & A.O. Smith 100284494 Filter Air Inlet 320734-701 The MARS 780 series design

The MARS 780 series design features silver-cadmium oxide contacts

The Robertshaw 720-402 is the official direct replacement for the 720-400

Reduced Standby Loss: Closes the chimney flueway during off-cycles to retain residual heat within the heat exchanger

This mixing or diverting valve features a highly saturated nitrile paddle for bubble-tight close-off

this overload relay monitors electrical current in real-time

Lochinvar & A.O. Smith 100284494 Filter Air Inlet 320734-701 The MARS 780 series designThe Lochinvar & A. O. Smith 100284494 Filter Air Inlet is a critical OEM component designed to maintain the integrity of the combustion process in high efficiency condensing boilers and water heaters. As a veteran grade air inlet filter replacement, this assembly utilizes a robust Sohlberg filter media to effectively strain out airborne particulates, dust, and debris before they reach the heat exchanger or blower housing. By ensuring a clean stream of