We have an Isotherm
hotwater heater heated both by the port engine
engine and 120. It keeps the water
hot. Starts at 180 degrees and cools from there. In a 4-5 day passage
we almost always have had the run the engine
so we get hot water
as aby product. A well insulated heater makes a difference in the time hot water will last.
We just came in from a month on anchor
in laguna Grande, Ven. We didn't start the engine for weeks at a time. For the most part the water in the tanks
was tepid after the a few days. With the high temps we didn't mind the cooler water.
We are able to use the invertor to heat the water but rarely do. For the most part it hasn't been a problem. But occasionally the Admiral want hot water and we will run the engine.
Since we will be adding wind
gen we will probably heat the water more often with AC, but right now it is not bad.