Suburban 6259 RV Water Heater Access Door – 10, 12 & 16 Gallon | White, Polar White, or Black

The Suburban 6259 RV Water Heater Access Door is a flush-mount exterior replacement door designed for Suburban 10, 12, and 16-gallon tank water heaters. It provides access to the burner, controls, drain, and other service components while maintaining a clean, low-profile appearance on the exterior of the RV. Suburban lists the 6259-series doors for 10-, 12-, and 16-gallon applications.

The flush-mount design sits close to the RV sidewall for a cleaner appearance and improved fit compared with older protruding door designs. Replacement assemblies are available in multiple factory colors depending on the specific 6259 suffix.

Models It Fits

The Suburban 6259-series access door is designed for many 10, 12, and 16-gallon Suburban SW Series water heaters, including applications within the:

• SW10 Series

• SW12 Series

• SW16 Series

This includes gas-only and gas/electric configurations where the water heater uses the corresponding 10/12/16-gallon flush-mount exterior opening.

Always compare the existing door dimensions and model before ordering.

Available 6259 Part Numbers

Suburban currently identifies several 6259-series door variations:

• 6259APW – Polar White

• 6259ACW – Colonial White

• 6259AEB – Black

These doors share the same basic 10-, 12-, and 16-gallon flush-mount application, with the suffix primarily identifying the finish/color.

Dimensions

Typical 6259 flush-mount door dimensions are:

• Overall Dimensions: approximately 18-1/4" x 18-1/4"

• Water Heater Cutout: approximately 16" x 16"

• Flush Projection: approximately 3/16" from the exterior trim

Signs You May Need a Replacement Door

Replace the water heater access door if the existing door is:

• Bent or damaged

• Rusted or badly corroded

• Missing

• No longer latching securely

• Damaged around the hinge or frame

• Being replaced during a water heater installation or restoration

Estimated Install Time

Approximately 15–30 minutes for a straightforward replacement using the existing opening.

Tools Required

• Phillips screwdriver

• Drill or driver, depending on installation

• Putty tape or approved RV sealant if replacing the frame

• Scraper or plastic trim tool for removing old sealant

• Basic hand tools

Installation Notes

If replacing only the removable door panel, installation is generally very simple.

If replacing the complete door and frame assembly, remove the old sealant and thoroughly clean the RV sidewall before installing the new frame. Use an appropriate RV exterior sealant or putty tape around the mounting flange to help prevent water intrusion.

Before ordering, verify whether you need the door only or complete frame assembly, as listings can vary in what is included.

Product Specifications

Manufacturer: Suburban / Airxcel
Part Family: 6259
Application: 10, 12 & 16 Gallon Suburban RV Water Heaters
Mounting Style: Flush Mount
Approx. Overall Size: 18-1/4" x 18-1/4"
Approx. Cutout: 16" x 16"

Common Part Numbers: 6259APW, 6259ACW, 6259AEB