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The Goodman B1756028L Horizontal Drain Pan is a genuine OEM condensate pan designed for the Goodman ASPF303616AA air handler installed in the horizontal (left or right) orientation. When an air handler lies on its side, condensate runs differently than in a vertical setup, so this dedicated horizontal pan captures and routes water correctly to the drain, preventing overflow, cabinet corrosion, and ceiling damage.
Manufactured to original Goodman specifications, the B1756028L matches the factory pan footprint and drain-port location for a direct, no-modification replacement.
Horizontal pans are application-specific — the slope and drain placement must match the unit exactly to avoid standing water. The OEM Goodman pan guarantees correct geometry and port alignment. Generic alternatives may not provide proper drainage in the horizontal position, risking leaks. OEM is the recommended choice for reliable condensate management.
Moderate (3/5). Requires repositioning the coil and confirming drain slope for horizontal flow. Best performed by an HVAC technician. Disconnect power before servicing.