OEM Goodman 23 x 20 in Vertical Drain Pan for AEPF426016BA — B1756020L

The Goodman B1756020L Vertical Drain Pan is a genuine OEM condensate pan sized 23 x 20 inches (outside dimension) for the Goodman AEPF426016BA air handler installed in the vertical (upflow/downflow) orientation. The drain pan sits beneath the evaporator coil to collect condensate and route it to the drain connection, keeping moisture out of the cabinet and ductwork. A cracked, warped, or algae-clogged pan leads to water leaks, cabinet corrosion, and potential water damage — replacing it with the correct OEM pan restores proper drainage.

Specifications

• Outside dimensions: 23 in. x 20 in.
• Orientation: Vertical (upflow / downflow) coil pan
• Material: Molded / corrosion-resistant condensate pan
• Fits: Goodman AEPF426016BA and compatible AEPF air handlers
• OEM Part Number: B1756020L
• Brand: Goodman

OEM vs. Generic

This genuine Goodman OEM drain pan matches the factory footprint, drain-port location, and coil clearances exactly, so condensate flows to the correct outlet and the coil seats properly. Universal pans rarely line up the drain connections or fit the cabinet without modification, which invites leaks. For a water-handling part, OEM is the reliable choice.

Installation Difficulty

Moderate. Requires shutting off power, accessing the coil compartment, sliding out the old pan, transferring or reconnecting the drain line, and reseating the new pan level so it drains fully. Plan 45–60 minutes. Confirm the pan is pitched toward the drain and test for leaks before closing the cabinet.