I'm sure the
advice on the fridges is right in as far as it goes as all I have read indicates
insulation makes the biggest difference. However, you have domestic
appliances so can get new ones with a A++ rating. If I had them in my
boat, which I can't do as mine are all built in with only limited opportunity for
insulation improvements, I would use half the
power I currently use. Given that is probably half what you use, you might quarter your
consumption from the best new fridge/freezers.
I also have an ice maker (recently broken). It used a massive 150A/day@12v. Only used on the
dock because of that and now I am making enough ice in the
freezer, so I probably will sling it. A better way to go if you use a lot of ice is to build and ice maker module into an efficient
freezer. Will use virtually no extra
power. A big chunk off your usage.
I would keep
electric power for
cooking. I'd love to get rid of my gas
oven. I worry about
leaks and the
boat blowing up. I worry about running out and the hassle of filling up. I have
maintenance on the pipes and
tanks to do. I have space taken that could do other things and a bit of unnecessary weight too. Induction
stove tops are very efficient and use less power than gas in
diesel generated equivalent. Modern insulated, fully sealed ovens are also pretty efficient. Use max power of 2.2kw and use maybe 60A@12v/hr, so maybe 0.2lt
diesel into the genset for an hour of
oven time. Not much. I'm think it is the way to go with a largish
battery bank and sufficient generation as we both have.
If it is all worth while is another question. I wouldn't do it unless things broke and needed doing anyway, but if you are
living aboard full time for many years to come then the savings will make the kit pay its way.
Getting the power use right down might mean you can move to
solar solely. Or it will also impact the genset size and when you replace it you might halve its output. That will have a huge effect on
fuel use, so multiplying the savings.
Good luck with the LFP
project. Mine are delivered, but not yet installed. I'm hope they will be good.