This show is focused on Aqua Hot Heating Systems. Aqua Hot Systems provide continuous Hot Water and a Very Balanceded Zone based heating system for the entire RV. Jason from Accurate RV explained in detail how to maintain an Aqua Hot Sytem and when it is time to call an in expert. If you are in the market to purchase a new Motorhome this might help in your purchase choice. If I were buying a New or used RV I would make sure it had an Aqua Hot Heating system in it. It will pay for itself and it is just an awesome solution to Heat an RV and provide endless Hot Water for that long shower when you really want it.