Lennox 93L84 Collector Box Freon ensuring the system is operating

ensuring the system is operating with a full liquid charge

depending on the specific revision of the blower housing

eliminating the need for complex modifications or universal retrofits

this furnace relay S1-024-11772-700 is the primary diagnostic check for continuity

Most OEM kits include the required mounting gasket or seal

Lennox 93L84 Collector Box Freon ensuring the system is operatingThe Lennox 93L84 Collector Box (also identified by part number LB 99004A) is a critical OEM replacement component designed for high efficiency condensing gas furnaces. As a veteran technician knows, the collector box is the central hub for managing corrosive condensate before it enters the drain trap. Over time, heat cycling and acidic residue can lead to stress cracks or seal failure in the composite housing, causing pressure switch trips or water