Change Your RV Anode Rod on Your Water Heater for Preventative Maintenance 

This video is how WE changed our Anode Rod in our Grand Design Momentum 380TH (toyhauler). There are other ways to do this & also other tools that can be used. However, you MUST change your Anode Rod or you'll end up replacing the whole water heater at nearly $700 vs the $10 Anode Rod you can get from Amazon or any RV section of stores.