Hello - I'm looking for advice on the best
heating option for 50' 1983 Gibson LZ in Boston. I've
included some info about my boat and what I believe to be the best
option so far. Feel free to set me straight.
****These are some facts about the boat/situation********
* The marina I’m at and will continue to
be at for the foreseeable future does not meter per slip, I pay a
hefty flat fee for unmetered 120/240 50Amp. I currently use a
marinco 240 to 2x110 Y splitter to feed two 110/30amp panels.
* All panels and wiring is new and at abyc
standards (marinco 12AWG).
* Removed and sealed the two inoperable
ceiling mounted factory AC/heat units last year during renovation
so combo AC/heat solution would be ideal.
* The last owner installed a small Becket
burner diesel furnace (non-marine) with forced hot water but I
ditched this system last winter when the corroded flue blew suit
all over the inside of the boat and because the radiators were in
* Internal cabin space is about 450
square feet x ~6.5' ceiling with an average heating btu
recommendation of at least 24,000 btu.
* I've added 1/2 inch foam insulation to
20% of the walls so far and all ceiling (except salon) already had
owens corning style fiberglass. Plan to finish salon
* I've heard reverse cycle boat style
AC/heat pumps (use sea water to heat/cool) are not recommended for
heating where water is below 45 degrees. Boston harbor coldest
water temp is an average of 36 degrees in February.
* I have a couple neighbors with 60'
Holiday mansions with after market insulation that heat their boats
with n ton home style AC/heat units mounted on their aft
decks. They tell me they only have to supplement with
portable coil heaters on coldest days. Problem: I'd rather not put
that big unit on the smaller deck of the Gibson. I have
plenty of space in the cutty under the salon I'd prefer to use.
***This is the option I'm considering*********
Add a 120/240 50Amp panel between the shore
power and my existing 2x110 30Amp panels to feed the 110 panels and
an electric coil heat and A/C combination unit(not reverse cycle)
like this (http://www.flagshipmarine.com/electricheat.html).