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Old 06-05-2011, 07:13   #16
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Location: Vancouver Island
Boat: 55'alloy performance cruiser
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Re: Boat Heaters

Hi again, Getting back to the original post, I believe the criteria was for low power consumption as he won't be plugged in to shore power. The hydronic heater is a fuel hog and a power hog. I read on Sure marines site that it uses up to 7-8 gallons of fuel a day and draws 7.5 amps. This is for the small unit. On the west coast of Canada that would be about $30 dollars a day for the fuel and two or three times more draw than my fridge. Yikes! Compare that to two sigmars burning two to three gallons a day total and maybe one amp /hour for misc fans and the small impulse pump. My relex heater with six radiators burns 1-2 gallons a day and is rated for 70,000 btus. One small pump at half and amp/hr, and that is it. It also keeps the engine warm and provides hot domestic water for showers etc.

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Old 06-05-2011, 07:30   #17
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Re: Boat Heaters

Wabasto diesel boiler. Go big; stay warm and dry.


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Old 06-05-2011, 08:07   #18
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Re: Boat Heaters

1-2 gallons a day and is rated for 70,000 btus
Miracles sure happen. There are 140000 BTUs in one gallon of diesel, which, if following rule of physics and if heater is 100% efficient should mean that 2 gallons should last 4 hours, but miracles do happen, or maybe I just do not know something (which is more likely ).
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Old 22-06-2011, 23:52   #19
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Location: Oceanside, Ca.
Boat: Islander Freeport 36
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Re: Boat Heaters

Our boat came with an old Ardic 04D diesel heater that I've been trying to revitalize, and I almost have it working again. I'd like to talk to others that have one of these units, and maybe I'll get it operational again.

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