In a few weeks time I'm taking delivery
of a Lagoon 420
with no AC (too expensive). In November, we will be heading across the pond to the Caribbean
. We Brits don't generally bother with AC, but it would be nice to have, for occasional cooling
. The cost and the weight argue strongly against installing a marine
to air AC system.
However, I happen to have a new highly efficient reversable 1200 btu air to air single
split system that only cost a few hundred dollars. What's to stop me installing this? There's a suitable position on deck
behind the helm
for the out door unit which could double as bench seat when not in use. The indoor unit could be used to heat/cool the saloon
and, when necessary, the air could be persuaded to circulate to heat/cool the 4 cabins. We would probably only use it to cool the boat in the evening to allow sleep to claim us.
The AC unit is a highly efficient (COP 4.0) inverter
controlled system that would not be huge burden on our 17kVA generator
(with sixteen 210Ah batteries) electricity supply system.
Sure, the outside unit is not built for a marine environment
and will eventually corrode, but we would keep it covered when not in use and wash it down with fresh water
So, is this a dumb idea? Would the outside unit corrode in weeks? Would 12000 btu be sufficient (given that we would only want to bring the temperature down to bearable levels 25C/77F)?
L420, #52, Octopus