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Old 23-09-2014, 14:24   #1
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Cabin heater drawing combustion air from outside?

My understanding is that cabin heaters that draw in air from outside the cabin, use it for burning are producing a much drier heat than those who use the cabin air. Does anyone know if that is negligible or a big deal?
I am planning to use a cabin heater to extend the season and to dry out the cabin and clothes after a wet day. Should be diesel and small enough for a Tartan 34C.
Dickinson diesel heaters (e.g. The Newport) only have this closed air system for their propane heaters but not the diesel.
Does anyone know which heater has this?

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Old 23-09-2014, 14:39   #2
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Re: Cabin heater drawing combustion air from outside?

I don't know about boat heaters too much, but using a rooms air for combustion means your pumping an enormous amount of your heated air up the flue, and since your taking air out of the boat, it has to be replaced, so you'll be drawing cold air in from outside.
Surely if you can use outside air for combustion that has to be better?
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Old 23-09-2014, 15:43   #3
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Re: Cabin heater drawing combustion air from outside?

I have done considerable research for a heating unit that is simple, efficient and well-made. We are planning our next adventure to the high latitudes(hopefully soon) and the one unit that continues to get praise from commercial as well as recreational sailors is REFLEX- a quality Danish made drip feed heater. There is no need for an inlet pipe as the air is drawn from the cabin sole (cold) and the heat remains lit with no problems up to a 20 degree angle of heel. I have chosen Model 66M which is floor mounted and has the best reviews for efficiency. My mantra has always been "simple is better" and one mounted in your main salon should give you everything you want and more. Here's the link: I hope this helps.
Good luck and good sailing.
"And those who were seen dancing were thought to be insane by those who could not hear the music."
Friedrich Nietzsche, Thus Spake Zarathrustra
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