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Quick specs
Part Type
Drain pan, upflow bottom
Dimensions
20.5 x 16.62 x 6.5 in
Fits
Trane / Oxbox / Ameristar air handlers
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
SKU: PAN04043 · Category: DRAIN PANS

TRANE OXBOX AMERISTAR Horizontal Drain Pan Condensate Pan 20.5″ x 16.62″ x 6.5″ PAN04043

Genuine OEM Drain Pan·20.5 x 16.62 x 6.5 in.

$172.48

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  • Free shipping — most items ship by the next day

Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.

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SKU: PAN04043 · Category: DRAIN PANS
TRANE OXBOX AMERISTAR Horizontal Drain Pan Condensate Pan 20.5″ x 16.62″ x 6.5″ PAN04043
Quick specs
Part Type
Drain pan, upflow bottom
Dimensions
20.5 x 16.62 x 6.5 in
Fits
Trane / Oxbox / Ameristar air handlers
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.

TRANE OXBOX AMERISTAR Horizontal Drain Pan Condensate Pan 20.5″ x 16.62″ x 6.5″ PAN04043

Ensure reliable condensate management and protect your HVAC system with the genuine OEM Trane PAN04043 Horizontal Drainage Pan. This high-quality replacement drain pan is designed for upflow and horizontal air handler applications, effectively collecting and directing condensation away from your evaporator coil to prevent water damage, leaks, and system failures.

Key Features

  • Precise Dimensions: 20.5″ width x 16.625″ depth x 6.5″ height – engineered for a perfect fit in compatible 1.5-ton units.
  • Durable Construction: Made from robust materials built to withstand continuous exposure to moisture and temperature fluctuations without cracking or corroding.
  • OEM Quality: Official Trane, OxBox, and Ameristar replacement part, ensuring exact fit and optimal performance.
  • Horizontal / Upflow Design: Ideal for collecting condensate from the evaporator coil in horizontal or upflow air handler configurations.
  • Easy Installation: Direct drop-in replacement for damaged or leaking original pans.

Benefits

  • Prevents costly water leaks and ceiling/floor damage by efficiently channeling condensate to the drain line.
  • Extends the life of your air handler by reducing the risk of rust, mold, and overflow issues.
  • Improves indoor air quality by minimizing standing water that can harbor bacteria or mold.
  • Reliable performance you can trust from a leading HVAC brand – backed by OEM standards.

Compatibility

This PAN04043 drain pan is compatible with select Trane, OxBox, and Ameristar 1.5-ton air handlers and HVAC systems (horizontal drainage or upflow configurations). It serves as a direct replacement for worn, cracked, or leaking condensate pans. Always verify your specific model number for exact fitment.

Keep your HVAC system running efficiently and leak-free with the Trane PAN04043.

Key features
  • Genuine OEM Drain Pan — for Trane, Oxbox and Ameristar air handlers
  • 20.5 x 16.62 x 6.5 in. — horizontal drain pan
  • Upflow and Horizontal Use — collects and directs condensate
  • Protects Your System — prevents leaks and water damage

Why homeowners choose NAW

Genuine OEM parts

Every part we sell is the real thing — authorized, factory-genuine, and backed by the full manufacturer warranty.

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Not sure if this is the right part? Call us at (888) 292-0874 and we’ll help you find the correct replacement.
Specifications
Width 20.5"
Depth 16.625"
Height 6.5"
Configuration Horizontal / upflow drainage
Unit Size 1.5-ton air handlers

What buyers are saying

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Zen N

The TRANE Drain Pan Bottom for Upflow 20.5×16.62×6.5 PAN04043 exceeded expectations with its sturdy build and perfect fit, solving a long-standing issue effortlessly. I was genuinely surprised at the excellent price for such a high-quality component that performs flawlessly.