lawnspecialties
We have had both and the decision is yours. With a six gallon heater we would run out of hot water regularly. With the 12 gallon that ran on both gas and electric we really never ran out of hot water. Our current coach has the tankless hot water system which we really like. The advantages are:
1. The tankless water heater allows for more storage space.
2. Contrary to what is said we cannot believe how little gas it uses. The gas only kicks on while the water is flowing through the hot water system.
3. We have been in very cold areas (10 degrees) with very cold faucet water and it heats it well. You have to understand that there is not a tank involved. The gas heats the water while flowing through the copper lines.
4. It works very well for our needs and we are glad that we paid the additional money for it.
The disadvantages are:
1. For the hot water on demand system to operate efficiently you need 40 pounds of water pressure. If there is little pressure you can pump the water out of your fresh water tank.
2. In cold weather like 25 degrees you need to simply drain the heater system as it will freeze during travel and the copper lines are expensive to replace. It will not freeze while camping due to the pilot light. We have camped in 10 degree weather with no problem.
In summary it meets our needs very well. However if you have been happy with the tank system it probably is not worth the investment. I do recommend the water tank that will operate on gas and electric at the same time which works well if you have a lot of people taking showers. Good luck with your order