I agree with the others, though I can add a wrinkle to this:
We replaced our 11-gallon Force 10 water heater with a 6-gallon Isotemp. We went with a smaller tank, reluctantly, because the larger Isotemp would not fit in the space formerly occupied by the Force 10.
Two years later I am more than happy with the 6-gallon Isotemp. Why?
1) Because the Isotemp's insulation
is superior to the Force 10, so our water is remains hotter, and consequently we need less hot water when mixing at the sink or shower
2) Our 6-gallon Isotemp takes much less time to heat than the old 11-gallon Force 10. This is important for us, because often we motor
for only 20 minutes or so - enough time to raise anchor
, hoist sails
, and get under way. I don't know whether the smaller Isotemp heats up more quickly than the larger one, but I suspect this is true.
On the other hand, I confess that we only take occasional, quick showers. The air's kind of chilly in Maine
, and my wife and kids
are often reluctant to shower at all. So if you have room for the larger tank and you like you're hot water, then go for it! My main point is simply that I am really happy with the Isotemp heat exchanger
.... it heats up quickly, it keeps the water hot for a long time (24 hours and it's still warm enough for doing dishes), and (most importantly) the tank is stainless. So if you end up with the 6-gallon model it's not the end of the world.