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Adding AC to a boat

Old 02-21-2009, 07:24 PM
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Default Adding AC to a boat

I am looking at a boat, 29' Chaparral, that does not a have AC. I was told there is a cheaper way of getting AC by bringing it through the bow porthole. Is this possible? How does that even work?
Old 02-21-2009, 08:21 PM
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Default RE: Adding AC to a boat

They sell a "Carry-On" portable A/C unit that sits on the deck and hatch then blows the cool air inside the cabin.

It's OK, but not great. You do have to deal with a rather large sized object when it's not in use.

I've seen some folks jury-rig a Home Depot window a/c unit on to their boat, but you might qualify for the redneck award with that set-up.

You have a nice boat, why don't you add to its value and put in a real A/C system?

They sell some nice units that are designed for aftermarket and DIY installations that aren't an arm and a leg in cost.

Do you already have a gen-set built in onboard?

Good luck!
Old 02-21-2009, 08:58 PM
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Default Re: Adding AC to a boat

http://www.cruisair.com/self.html
Old 02-21-2009, 08:59 PM
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Default Re: Adding AC to a boat

What ABoater said...
Old 02-22-2009, 02:03 AM
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Default Re: Adding AC to a boat

If you don't have a genset,you will need shore power which your boat should have.Your boat will need a ac unit no less then 16,000 BTU's.If you are handy with tools,there are not very hard to install,but you will need to dry dock the boat to install a thru hull seacock/pickup for raw water to exchange heat from the unit.You can find a complete ac 16,000 unit new for around $1200-$1400 that is 110Volt's if that is all your shore supply can handle.

Now to install,call your builder and ask them any and all info on the hows,what's and were's.
Old 02-22-2009, 03:13 AM
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Default Re: Adding AC to a boat

I'm not convinced you would need anything near a 16,000 BTU model for that boat. I just installed a 6,500 BTU on my Grady Marlin and it could easily cool a lot more area IMHO. I don't have a genset so I plan to use the Honda 2K portable while underway. They claim it will run on the 1K but reading the start up specs I will use the 2K to be safe. This is the one I installed. It's a self-contained system. I purchased the install kit, pump and upgraded the controls. It was around $1,800 total. The install was not a lot of fun but I would do it again. It looks and cools great. It is a cool only model so if you need heat (I'm in FL) you would have to choose a different one.

http://www.defender.com/product.jsp?path=-1|6880|48359|812829|813257&id=48342

LB

Old 02-22-2009, 03:18 AM
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Default Re: Adding AC to a boat

prockvoan - 2/22/2009 3:03 AM

If you don't have a genset,you will need shore power which your boat should have.Your boat will need a ac unit no less then 16,000 BTU's.If you are handy with tools,there are not very hard to install,but you will need to dry dock the boat to install a thru hull seacock/pickup for raw water to exchange heat from the unit.You can find a complete ac 16,000 unit new for around $1200-$1400 that is 110Volt's if that is all your shore supply can handle.

Now to install,call your builder and ask them any and all info on the hows,what's and were's.
No less than 16,000 btu's in that small cabin, is he going to hang meat in there. He needs no more than 10,000 and can probably get away with a 7,500.
Old 02-22-2009, 04:29 AM
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Default Re: Adding AC to a boat

Strongly consider whether you really need it
or not >>> another maintennance item!
Old 02-22-2009, 04:49 AM
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Default Re: Adding AC to a boat

I've got a 31 Tiara and 12K is plenty and my cabin is fairly spacious. I'm in upstate NY and even up here you need it in the summer if your going to weekend on the boat.
Old 02-22-2009, 04:59 AM
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Default Re: Adding AC to a boat

Mike Boehler - 2/22/2009 7:49 AM

I've got a 31 Tiara and 12K is plenty and my cabin is fairly spacious. I'm in upstate NY and even up here you need it in the summer if your going to weekend on the boat.
I agree. My 28 Bertram had a 12k unit and it was borderline too large even for hot July nights in the Bahamas. The problem with oversizing is the air cools too fast without removing enough humidity resulting in cool but muggy conditions.

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