Suburban tank water heater winterizing, drain, or freeze risk

Use this when a Suburban tank water heater must be drained for freezing storage, bypassed for antifreeze, or checked after possible freeze exposure.

Owner-safe checklist

• Turn off electrical power, LP, and water pressure, then let stored water cool before draining.
• Drain the water heater and follow the RV manufacturer's instructions for the whole water system before freezing storage.
• Do not relight or energize the heater until the tank is refilled and air is removed from the tank and lines.
• Call qualified service for damaged fittings, leaks, blocked drains, or suspected freeze damage.

Official sources

• Suburban Tank Water Heaters Operation & Maintenance Guide
• Frequently Asked Questions about Suburban RV Products