Heat

[Markshoreline]

I did mine 6 or 7 years ago and only remember that it was a royal pita.  However, it is possible given a large enough screwdriver and plenty of beer.  Maybe have a buddy over to help drink the beer and offer opinions?
The bypass is easy, just clip the wires to the tip switch and connect without the switch.

[Sparhawk]

We don't have the SL22 anymore although it did have a Wallas kerosene heater with offboard ventilation.

Still going strong too Hunter. Although not as good as your system with the window defrost venting, it does a decent job of keeping the cabin warm and dry. We don't really use the cook top, so if I had to do it again, I would definitely lean toward the webasto/espar with ducting on the dash.

Here's some photos of the one I use. It is an InterTek Pro Fusion ceramic heater. One of the reasons I like it is that is a 2 setting heater, a 750W setting and a 1500W setting. About 120 volts. The feature I think you will like is the "auto-off" feature. Basically that little circle on the bottom is a mechanical sensor and only allows it to be turned on if the sensor is pushed in all the way. Then if you have the heater on and you get hit by a big wave and the heater tips over, it will turn off. Then when you put it back upright it will turn back on. t also allows you to select the temperature and it will heat it up to that temp then turn off, then back on when it gets about 3 degrees colder than the set temperature.
Apparently my files are too big. Here is a link to them. https://photos.app.goo.gl/MyNOCu3MxJVzAAZi2

Are you just running this on shore power or out on the water as well? Just curious if you run this off of an inverter or not as that could drain a battery pretty quick depending on conditions. Electric heaters aren't nearly as efficient as their combustion counterparts, but you do get the benefit of a "dry" heat. That being said, I leave a small electric heater in the cabin while the boat is in the shop during the winter to get rid of any moisture and to prevent freezing. Speaking of, probably about time to bust it out.

I pretty much never use it, only if we have been fishing and our hands are super numb. I just plug it in inside the cuddy (super small cuddy) and it takes maybe a minute to heat up to 70 degrees. Then I plug it and let the heat hang out in there.

[Diablo]

markshoreline:  How did you disassemble. I couldn't see any easy way into mine?

I picked up a Little Buddy at Outdoor Emporium a couple days ago. FYI $65 for members. I also saw Cabelas has them for $49 refurbished, mail order only.
I liked Mark's suggestion to disable the tip over switch so I did it yesterday. I'll post the parts diagram below. Here is how I did it.
Remove the propane bottle.
Remove 4 screws for the "Caution hot" ring.
Remove 6 screws in handle and bottom of the case.
Remove 2 screws under the sticker by the buttons and under the sticker on the opposite side. You can't see these screw holes, you need to feel them under the stickers then poke through the sticker.
You can remove one side now.
Remove the start button, it just pulls off.
Remove 2 screws inside holding the start button. The other side should come off now.
Look for the 'Tip over switch' #17. The Sw is normally closed and opens when tipped over.
Remove the 2 wires. You need to connect the wires together. I did that with a piece of 14 gage copper wire, then I taped it up.
Put it back together opposite what you just did and test.
Realize you are defeating a major safety feature. If you use the heater for more than your boat you could add a tip over override switch on the out side of the case. Wish I thought of that when I was doing it. Good luck.

[Threeweight]

I vote for leaving the Coleman heater at the dock.

Me to... vapors from Coleman liquid white gas are just as volatile as gasoline.  Watched a guy try and "jump start" a campfire with about a half cup of it it against my advice.  His eyebrows took about 4 months to grow back.

[Markshoreline]

I have a Buddy, not the Little Buddy model.  However, I'm sure the tip switch is similar and in the same circuit. Just one wire in and one wire out of the device so as Diablo mentioned, just disconnect and join them together, maybe have to use an extra piece of wire as a splice.
Here's the current model which is different cosmetically from the version I have.
http://www.mrheater.com/portable-buddy-heater.html   

[croaker stroker]

I vote for leaving the Coleman heater at the dock.

Me to... vapors from Coleman liquid white gas are just as volatile as gasoline.  Watched a guy try and "jump start" a campfire with about a half cup of it it against my advice.  His eyebrows took about 4 months to grow back.

🤣. I hate it when that happens.

[Markshoreline]

What?  Growing back hair?

[Diablo]

I have a Buddy, not the Little Buddy model.  However, I'm sure the tip switch is similar and in the same circuit. Just one wire in and one wire out of the device so as Diablo mentioned, just disconnect and join them together, maybe have to use an extra piece of wire as a splice.
Here's the current model which is different cosmetically from the version I have.
http://www.mrheater.com/portable-buddy-heater.html

The Buddy looked like over kill for my 19. Now if I had a huge 21 I could see the need.  :biggrin:

[Salmon King]

I'm still trying to figure out how to get the big buddy apart so I can get at that tilt switch...

[Markshoreline]

Yes, disassembly is the challenge but you'll figure it out.

The regular buddy has tabs on the back that you can attach to strategically placed screw heads in the cuddy door.  Keeps everything on the up and up.

[Salmon King]

Yes, disassembly is the challenge but you'll figure it out.

The regular buddy has tabs on the back that you can attach to strategically placed screw heads in the cuddy door.  Keeps everything on the up and up.

After numerous attempts I'm giving up and going back to my trusty Coleman....

[Markshoreline]

SK bring your Buddy down here and we'll drink beer until we get her fixed!  Sounds like propane is safer...

[Salmon King]

SK bring your Buddy down here and we'll drink beer until we get her fixed!  Sounds like propane is safer...

I'll give you a call...

[Dhil12]

We had a wabasto furnace installed in our sea legend. It vents to the outside, so it's safe, has three heat vents, one on the windshield, one on the first mate and one in the cuddy, and will drive you out if up high. Very happy with it so far. I can hold 75 degrees with the door open