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Well, it appears that the ABYC standards only apply to liquid-fueled cabin heaters installed by the manufacturer of the boat...a DIY (or, dealer) install is apparently not mandated to comply with the ABYC standard, so, do as you want. I believe both C-Dory and Hewescraft are installing the...

Also, from Espar: Combustion air intake – The air for the heater combustion chamber must not be sucked in from the passenger compartment of the vessel. I couldn't find the Wallas installation instructions...the scanmarine site is difficult to navigate, so maybe I just missed it.

OK, there is a standard for liquid-fueled marine heaters: ABYC A-7 Standard. I haven't found a free version of it...ABYC has it as a $50 download! Can someone who already has it post it? From Webasto: WARNING: Do not extract combustion air from accommodation areas/ cabins! Danger of...

Oh, Oh...that is not exactly a best-practice, I wouldn't think. Do you really want to draw combustion air for a heater burner from near a gasoline filler opening? I'm getting to the point where I think there need to be specific standards regarding the installation of cabin heaters...or do they...

Well, I see his point, up to a point. But, it would also seem that the percent O2 in the room could decrease despite venting combustion products outdoors, but that probably implies that a partial vacuum is being created in the room. If there is zero oxygen depletion, why do the cabin heater...

Totally seperate issues, I believe. Exhaust being vented outside eliminates carbon monoxide issues inside, but does not address inside O2-depletion issues at all. O2-depletion will probably never be an issue inside a typical pilothouse boat due to available air leakage paths to replentish...

Right now, the Hewescraft Ocean Pro 220 is my "go-to" boat, complicated by the fact that the closest dealer (Calumet Marine in Chicago) is roughly 1200 miles away... Calumet does do shipping, but more importantly, they actually do "deliveries" to my area which is close to Montreal. I would...

Socrateur: Your state registration number is interesting...I thought they were all "XX" (State abbreviation), NNNN (four numbers), LL (two random letters). Your format is the first of that type I have seen.

I'm extrapolating from my non-marine learnings, but it seems to me that outside combustion air has two advantages: 1. Zero possibility of cabin oxygen-depletion (probably unlikely on most boats anyhow, but, why even risk it? But, with a pilothouse and bulkhead door, it is a conceivable risk)...

That photo of the C-Dory "side deck" makes me squirm. I have size 12EEEE feet, painful hips, and most recently, 14 screws and two repair plates in my shoulders...so far, I still have pretty good knees, but have been told to expect my bone condition to extend to them also... So, I cannot...

For single-handing the boat, the hip boots sound like a good suggestion. Also, depending on location, some public ramps totally prohibit power-loading, either for safety reasons or to prevent erosion of the bottom by prop-wash. Trailer platforms, with gritty no-slip, seem to be obvious...

Thanks...that may explain what I'm looking at now, despite what Scan Marine says: http://www.scanmarineusa.com/Wallas_furnace_1800.pdf It actually looks like a dual-concentric intake/exhaust...I think it was the Espar that said that intake/exhaust had to be seperated by at least 6...

I was more concerned with oxygen-depletion, and air-quality issues in the cabin in general. The Wallas recirculates cabin air, it seems, and relyies on cabin air-leaks to supply combustion air...how could that possibly be superior to a ducted source of outside combustion air like the other...

I was just at: http://www.scanmarineusa.com/wallas_furnaces.html and I'm left totally confused by Scan Marine's website. There are totally seperate furnace models for diesel and kerosene fuels...both apparently for marine use, despite only the diesel ones with "Nautic" in the model name. I was...

I wish... My LEO assignment involves sitting at a computer at a fusion center, trying to find sex-offenders who take-off...what we call "God's work"... regardless of religious beliefs... I look forward to retirement soon, some place where there is none of the low-life people who have made my...

Good point...I work for NYS in a law-enforcement job, so I deal with the upstate/downstate mentality all the time. For people in Brooklyn, Poughkeepsie is considered "upstate"...yet for folks in Albany, "upstate" means a 45-minute drive to Montreal. From that viewpoint, I'm not upstate, but...

All such good advice. The advantage of twins is obvious: redundancy, and the twin-screw advantage in maneueverability...the disadvantages being more money and twice the maintenance. But if a kicker was planned anyhow, makes more sense. Since I won't be purchasing for another two years...

All these ideas are great, thank you for them, and also for the PM suggestions, too. I have not been out on a boat in several years...during which time I have had hip and shoulder joints replaced...so, I'm not really sure what I am capable of doing regarding single-handing a ~22' pilot-house...

I have never actually seen a C-Dory, and I'm having trouble interpreting photos and diagrams. To move forward on the boat, is there ample (or, even generous) walkway space along side the pilothouse? I would be doing mostly single-handed boating, with no assurance of anyone being at the dock...

It looks like these Mr. Heater Buddy things are a viable and cheap alternative to the very expensive diesel cabin heaters, at least for day-use. I actually thought that there would be universal arguments here against their use, but I'm pleasantly surprised that such is not the case. I'm...