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Old 08-14-2016, 09:00 PM   #1
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Marine Air Conditioning - Plan B

Boat Air Conditioning is a big topic this time of year. Traditional marine AC systems involve lots money, numerous large and small parts, water pumps, electric wiring and switches and running raw water into your boat through sea cocks, strainers and hoses.



Installation takes real time, effort and expertise. It is not for the faint of heart.



Also, there is always the possibility of a raw water hose splitting or a clamp breaking and your boat sinking.


In over 40 years of live-aboard boating I have always been wary of my marine AC systems and have sought a simpler, safer, cheaper solution.


So I was pleasantly surprised when Janice aboard Seaweed showed in great detail how she solved this problem.


She used a simple $100 Haier air conditioner coupled with a Moby-Cool AC cover. The result is an inexpensive, effective way to keep her boat cool.



She lives on her 23 Schucker and chronicles her journey on her website.


I had two traditional marine AC systems on my 36 trawler but have now copied her ideas and installed a 12,000 BTU unit on my boat. It does a great job for me in the sweltering Florida heat.



And if it ever breaks I will just throw it away and spend another $200 for a brand new one.


If you are interested in seeing how Janice keeps cool go to this link:
Moby-Cool a/c cover Installed article on janice142

Fair winds, Blue skies.

M.
On the Florida Gulf Coast, where life is pretty good.
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Old 08-14-2016, 11:04 PM   #2
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I've been battling with the A/C solution for my pilothouse for several years now, trying to avoid putting in another high-buck marine unit. My pilothouse has a lot of glass and heat transmission, so I've been experimenting with window films to cut down on the transmission. I need to get my daytime, in the Florida sunshine, windows-closed pilothouse temperature down about 10 degrees before I can expect even a good sized marine A/C to do the job. I've looked at home units, floor units, roof-top RV units, roof-top marine units, and doubling up on the 16K BTU marine unit I already have. Now, I'm looking at mini-splits, but each of these has its positives and negatives. Weight, cost (particularly cost per BTU), efficiency, and life expectancy are all different.
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Old 08-15-2016, 02:05 AM   #3
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V-Kool USA | The Cool And Clear Window Solution
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Old 08-15-2016, 02:13 AM   #4
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Quote:
Originally Posted by oldhatt View Post
Boat Air Conditioning is a big topic this time of year. Traditional marine AC systems involve lots money, numerous large and small parts, water pumps, electric wiring and switches and running raw water into your boat through sea cocks, strainers and hoses.



Installation takes real time, effort and expertise. It is not for the faint of heart.



Also, there is always the possibility of a raw water hose splitting or a clamp breaking and your boat sinking.


In over 40 years of live-aboard boating I have always been wary of my marine AC systems and have sought a simpler, safer, cheaper solution.


So I was pleasantly surprised when Janice aboard Seaweed showed in great detail how she solved this problem.


She used a simple $100 Haier air conditioner coupled with a Moby-Cool AC cover. The result is an inexpensive, effective way to keep her boat cool.



She lives on her 23 Schucker and chronicles her journey on her website.


I had two traditional marine AC systems on my 36 trawler but have now copied her ideas and installed a 12,000 BTU unit on my boat. It does a great job for me in the sweltering Florida heat.



And if it ever breaks I will just throw it away and spend another $200 for a brand new one.


If you are interested in seeing how Janice keeps cool go to this link:
Moby-Cool a/c cover Installed article on janice142

Fair winds, Blue skies.

M.
On the Florida Gulf Coast, where life is pretty good.

To each his or her own.

But the negatives you list against marine a/c units are highly exaggerated.

And home units mounted on most boats are anything but elegant.
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Old 08-15-2016, 05:55 AM   #5
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I've been battling with the A/C solution for my pilothouse for several years now, trying to avoid putting in another high-buck marine unit. My pilothouse has a lot of glass and heat transmission, so I've been experimenting with window films to cut down on the transmission. I need to get my daytime, in the Florida sunshine, windows-closed pilothouse temperature down about 10 degrees before I can expect even a good sized marine A/C to do the job. I've looked at home units, floor units, roof-top RV units, roof-top marine units, and doubling up on the 16K BTU marine unit I already have. Now, I'm looking at mini-splits, but each of these has its positives and negatives. Weight, cost (particularly cost per BTU), efficiency, and life expectancy are all different.
Larry,
I have a 12K Webasto in my pilothouse that is probably twice what I need but works very nicely! Shouldn't be a difficult install on Bucky. Probably have to up size the water pump to overcome the additional head pushing the water up to the pilothouse. My March pump has enough flow for 2 AC units with a 15' head pressure. The floor of your pilothouse has to be below that.

Ted
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Old 08-15-2016, 06:21 AM   #6
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Quote:
Also, there is always the possibility of a raw water hose splitting or a clamp breaking and your boat sinking.
Why would that be the case? Why would a boat owner create that possibility?
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Old 08-15-2016, 05:11 PM   #7
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Our Odyssey: Keeping our cool under way

healhustler - you mentioned mini split systems. see this link for a very recent installation in a 50' trawler. he seems to like the results. m.
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Old 08-15-2016, 06:35 PM   #8
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I guess if you don't intend to spend much time on your flybridge it would work.

And you keep a bottle of Wink rust stain remover handy.
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Old 08-15-2016, 06:50 PM   #9
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That sounds like it would be pretty nice for a boat application. Anyone ever use it?
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Old 08-15-2016, 08:24 PM   #10
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That sounds like it would be pretty nice for a boat application. Anyone ever use it?
I have, on many different boats. Works as advertised.
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Old 08-15-2016, 08:25 PM   #11
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I have, on many different boats. Works as advertised.
It would be well worth it then for my boat if I can find an installer in this area.
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Old 08-15-2016, 09:56 PM   #12
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It would be well worth it then for my boat if I can find an installer in this area.
Look at 3M Crystalline(?). Might have even better numbers.
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Old 08-15-2016, 10:22 PM   #13
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I just installed 2 12000 btu units in my 36' TRI cabin. New tinted windows help and the system works great. Sure it takes some time to install but not too technical. The tubes were the hardest as the boat never had traditional AC before. In fact the PO put a window unit in a rear salon window. It leaked and ruined the interior woodwork. Fixing that took more time than the whole AC job. I'm kinda down on window units, function and form.
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Old 08-15-2016, 10:26 PM   #14
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Janet is amazing

Oldhatt , I agree with you; Janet has has come up with a charming solution for a limited budget. Janet is a true gem amongst us. Thank you very much for sharing this.
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Old 08-15-2016, 10:41 PM   #15
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Larry,
I have a 12K Webasto in my pilothouse that is probably twice what I need but works very nicely! Shouldn't be a difficult install on Bucky. Probably have to up size the water pump to overcome the additional head pushing the water up to the pilothouse. My March pump has enough flow for 2 AC units with a 15' head pressure. The floor of your pilothouse has to be below that.

Ted
Ted: No problem with my March pump and two units and head pressure.... I probably have the same pump you do. More than enough space for a half-dozen units up there behind helm, under settee, etc., no kidding. Why do I keep looking for a better alternative? Could be the $$$? I'd probably be foolish to go with anything less than 12K BTU with all the glass area I have. The thing is with this window film, 3M or otherwise, I just can't live with having spent 5 boat bucks for new windows and live with any significant distortion.
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Old 08-15-2016, 10:55 PM   #16
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The thing is with this window film, 3M or otherwise, I just can't live with having spent 5 boat bucks for new windows and live with any significant distortion.
I use V-Kool on fwd helm windows all the time. No noticable distortion in them or any of the other windows it's installed on.
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Old 08-15-2016, 11:06 PM   #17
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I use V-Kool on fwd helm windows all the time. No noticable distortion in them or any of the other windows it's installed on.
I sure hope you're right, Bill. I asked for a sample of the stuff first, but the claims of 96% UV rejection sound just like the high-buck 3M film.
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Old 08-15-2016, 11:15 PM   #18
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I sure hope you're right, Bill. I asked for a sample of the stuff first, but the claims of 96% UV rejection sound just like the high-buck 3M film.
I just spent 6 weeks looking out the fwd flybridge helm window and I can't say I noticed any distortion.

But if you want I can walk out to the boat in the morning and look again.

I can also take a picture too if you'd like. Not sure how well that will work but I'd be happy to do it.
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Old 08-15-2016, 11:32 PM   #19
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I just spent 6 weeks looking out the fwd flybridge helm window and I can't say I noticed any distortion.
That's saying something, considering you've put in on the windshield. My windshield has a pretty steep forward rake, so it's always in the shade, save for maybe near sunset or sunrise while heading into the sun. I'll be using the film on the side and rear windows. I've got a couple of sliding patio doors that I've mounted several examples of other window film, so I'm hoping that they send me a sample to compare. If not, I might bite anyway if the cost is any less than the 3M film.
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Old 08-16-2016, 05:22 AM   #20
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Ted: No problem with my March pump and two units and head pressure.... I probably have the same pump you do. More than enough space for a half-dozen units up there behind helm, under settee, etc., no kidding. Why do I keep looking for a better alternative? Could be the $$$? I'd probably be foolish to go with anything less than 12K BTU with all the glass area I have. The thing is with this window film, 3M or otherwise, I just can't live with having spent 5 boat bucks for new windows and live with any significant distortion.
Make up your mind what you want for the AC unit. Fall boat show is the beginning of October. All the online boat supply places have their end of season sales then. Paid 2/3 of the normal price 2 years ago between manufacturers incentives and the sale price.

Ted
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