16,000 BTU Cruisair…mounted in the forward cabin on the storage cabinet floor.
I like it a lot when we are in a slip..cools the salon and forward cabin very well. Trying to cool the whole boat including the aft cabin is just a bit of a stretch but ok.
 
Joe,
Half Moon

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Pete,

During the 3 years I was renovating Silverheels in NE FL, I had a small
window AC unit mounted in the salon’s overhead hatch during the summers.
Often had triple-digit days in July/August/September, with humidity
nearly as high. That one unit, around $150 new at Home Depot, kept the
salon very cool & comfy, always. Since I sleep in the aft cabin, I’d
sometimes close off the forepeak and run a house fan from the forward
end of the salon blowing aft, which pushed the AC air aft. It was a
perfectly adequate system for under $200. When I set off cruising I sold
the unit to someone else at the boat yard. Didn’t feel I could justify
bringing it along to the Caribbean, mostly stored in a cockpit locker,
since I’m almost never dockside. I believe my Honda generator could
power that AC unit at anchor, but the times I’ve really missed having AC
over the past few years of cruising I could count on one hand.

Tor

I agree completely. I only used my a/c when in a slip..otherwise, at anchor, the breezes were nice enough and even daytime temperatures were tolerable when in motion. But in a slip, it’s hard to get good ventilation. I was in a slip on only a few occasions, not enough to justify the cost.
However, since we also spent a good amount of time outside the Caribbean, that is in the Eastern USA such as Charleston, SC, the a/c was well worth it there..hot, humid and no breeze.
Joe,

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16,500 btu Mermaid installed in the starboard locker at the base of the
companionway ladder.
Used only in the marina.
Agree with Joe it handles most of the boat most of the time. On really hot
days we close the aft cabin.
Rick
Eclipse
On Thu, Jul 5, 2012 at 9:56 AM, petedd wrote:

This very hot summer in Colorado has led to again revisiting the putting
air conditioning on the boat before we head off for the tropics. We have
a 12V 200AMP generator/SCUBA compressor (I did not do an AC generator
because frankly I was not planning for air conditioning).

All that said, what size air conditioning units do folks have on their
424’s, where are they mounted, and how well do they perform?

Thanks,

Pete

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No need for A/C here in Hawai’i. Highs always in the low 80’s, lows in the low 70’s. Trades or Kona winds always blowing. Gee, I love it here!

Dan Kalinowski
Jolly Lama #135
Ko Olina, O’ahu

IMHO, much more valuable in the tropics is a big deck awning (that can
double as a rain catcher) stretching from the main mast to the mizzen
and out to the side rails (supported by battens), plus of course a
dodger with opening central window and a full bimini (which needs
opening flaps for accessing the mizzen sail). Keeping most of the boat
in shade that way makes a huge difference. When the breeze dies, a few
cabin fans help a lot, too.

One other little trick. On the rare nights that it’s so hot & still it’s
hard to sleep, I wet a t-shirt, wring it out so it’s just very damp, and
wear it to bed with a fan blowing on me. That has been 100% effective
for falling asleep comfortably. By the time it dries out later, the
night air has cooled down to a comfortable sleeping temperature.

Or you can buy and install a full, internal AC system & generator and
maintain them and irritate everyone else in the anchorage with the
nighttime racket, except for the motoryachts because that’s what they’re
doing. (Just kidding, Pete, I know you’re much more considerate than
that.)

Bottom line? Do whatever will make the cruise the most fun for you.
Different strokes.

Tor

I thought you were going to recommend cuddling up to a wet pig Tor. Great article in this month’s SAIL!

Truth be known, I may have cuddled up to the occasional wet pig back in
my rock-n-roll days, but I was a whole lot wilder then.

I’m out of touch with the waterworld, up here in the Montana/Idaho
mountains for the summer. What article do I have in this month’s SAIL?

Thanks,

Tor

Aloha Tor: it’s the one about the swimming pigs in the Exumas.

Dan Kalinowski
Jolly Lama #135
Ko Olina, O’ahu

Thanks, Dan. I didn’t know when that would come out.

Tor