A water heater by-pass kit allows the plumbing system to bypass the hot water heater, reducing the amount of anti-freeze required by 6-12 gallons. Some RV’s come equipped with this by-pass system, but if your RV doesn’t have one, we recommend you install one. It’s a one-time installation.
Other winterizing aids - Other items that are handy time and effort savers in winterizing your RV include:
If you have an air compressor available, do the following:
Antifreeze may be added to the system a couple of ways (adding several gallons to the fresh water tank and pumping through the system is a third way, but requires several additional gallons of antifreeze).
1. Use an Antifreeze Hand Pump attached to the city water inlet.
2. Install a Pump Converter Kit. This is a one-time installation.