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Author Topic:   12-volt Cabin Heaters
BellBoyBob posted 02-18-2008 09:54 PM ET (US)   Profile for BellBoyBob   Send Email to BellBoyBob  
Just wondering what those of you with cuddy cabin boats have used for 12-volt heaters? Thanks,
deepwater posted 02-18-2008 11:41 PM ET (US)     Profile for deepwater  Send Email to deepwater     
Hey watch what you call a mans wife,,there is nothing 12 volt about her
swist posted 02-19-2008 08:01 AM ET (US)     Profile for swist  Send Email to swist     
Thought about it, then did the math. Say you need 1000 BTUs, that's about right for 30 sq ft (at least by household calculatios). At 3450 btu/KW, that translates into about 300 Watts, which at 12 volts, requires a current flow of 25 amps. That requires expensive batteries and a charging system that doesn't seem appropriate for a small boat. Or shore power, but if you're at a powered dock, why not just plug in a cheap 100V space heater.

In any application, electricity is an expensive way to generate heat.

home Aside posted 02-20-2008 09:50 AM ET (US)     Profile for home Aside  Send Email to home Aside     
Some of us here in the Great Lakes area have used the Pelonis Ceramic Disk heaters and similar units. Cube shaped, thermostat control, with automatic shut off if tipped over. I Don't have shore power on my Revenge 22 WT, but can run a cord from Dock power and plug her in. More than enough for the Revenge.


jimh posted 02-20-2008 10:30 PM ET (US)     Profile for jimh  Send Email to jimh     
I do not recall ever seeing a heater onboard a boat which was powered from the boat's 12-volt battery.
swist posted 02-21-2008 08:11 AM ET (US)     Profile for swist  Send Email to swist     
Then what are the 12 volt heaters under discussion? I'm sure I've seen them around.
Moe posted 02-21-2008 09:45 AM ET (US)     Profile for Moe  Send Email to Moe     
One of many Google results:

BellBoyBob posted 02-21-2008 10:30 PM ET (US)     Profile for BellBoyBob  Send Email to BellBoyBob     
The one I found for my 19' BellBoy express cruiser is this:
it runs directly off of the bar strip which is directly connected to the battery. 300 watts and fairly effective. I would recommend it.


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