Suburban ST-42 / ST-60 Water Heater Access Door 6285

The Suburban 6285 Water Heater Access Door is the OEM exterior access door designed for Suburban ST-42 and ST-60 tankless RV water heaters. It provides a finished exterior opening while allowing access to the burner, controls, wiring, and other service components inside the water heater compartment.

Suburban lists the 6285-series doors specifically for the ST-series tankless water heaters, including both the ST-42 and ST-60.

Models It Fits

The Suburban 6285 access door fits:

• Suburban ST-42

• Suburban ST-60

These doors are intended for the ST-series on-demand water heaters and should not be confused with access doors used on conventional Suburban SW-series tank water heaters.

Available Part Numbers

The 6285 door is available in two common factory colors:

• 6285AEB – Black

• 6285APW – Polar White

Suburban’s current catalog identifies both versions as exterior access doors for ST water heaters.

Approximate Dimensions

The black 6285AEB door is listed at approximately:

• Width: 15.323"

• Height: 14.921"

The same basic door size is used for the 6285 ST-series application.

When You May Need a Replacement Door

A replacement Suburban 6285 access door may be needed if the original door is:

• Bent or damaged

• Cracked or distorted

• Missing

• No longer closing or latching correctly

• Damaged around the mounting points

• Being replaced during an ST-42 or ST-60 installation

• Being changed to match a different exterior color

Estimated Install Time

Approximately 15–30 minutes for a straightforward replacement.

Tools Required

• Phillips screwdriver

• Drill or driver if required

• Basic hand tools

• RV exterior sealant or putty tape if the mounting frame is being disturbed

• Plastic scraper or trim tool for old sealant

Installation Notes

Before ordering, verify the water heater model and existing exterior opening.

If the complete door/frame assembly is being replaced, remove old sealant from the RV sidewall and reseal the mounting flange during installation to help prevent water intrusion.

If only the removable door panel is being replaced, installation is generally quicker and may not require disturbing the surrounding frame.

Important Fitment Note

The 6285 series is specifically intended for the Suburban ST-42 and ST-60. Suburban also lists other access-door families for different water heaters, including 6276-series doors used in certain IW60/ST applications, so the existing heater and door style should be verified before ordering.

Product Specifications

Manufacturer: Suburban / Airxcel
Part Family: 6285
Part Type: Exterior Water Heater Access Door
Fits: ST-42 and ST-60
6285AEB: Black
6285APW: Polar White
Approximate Size: 15.323" W x 14.921" H
Application: Suburban ST-Series Tankless RV Water Heaters