Over the last few boating seasons, I got tired of the finicky Wallas stove/heater. It didn't work very well as a heater or as a stove. I had taken it apart numerous times and replaced the wick, only to find that by the next season, the wick had hardened up to the point where the kerosene fuel would not absorb into it. So....what to do. I liked the idea of a dedicated heater and first thought about the knock-off diesel heaters from China. Certainly a lot less expensive than an Espar or Webasto, but I didn't trust them on a boat. Another option was a Wallas heater, as many people on this site had liked them, but I didn't like the top and bottom connections to them, and of course I had already had experience with the Wallas name. I purchased an Espar diesel heater from a truck parts vendor locally and so began the next problem of where to mount it so I could use the exising hole in the hull for the exhaust, and run the 60mm ducting.
I found that behind the fridge and up under the gunnel was going to work if I could only fabricate some kind of mount for it. This area has runs of wiring and steering hoses so I figured I also should shroud the heater somehow. I ended up cutting 2 8x8 aluminum boxes in half lengthways and using them as mounts/shroud. The unit fit perfect and the aluminum should protect the wiring/hoses. (After running the heater, it's surprising how cool the plastic housing stays - it only gets warm to the touch.) I had to cut a half an inch off each side of the mounting plate that came with the heater in order for it to fit.
Air inlet side of heater: (More pics in my album)
I also chose this location because I had found a nice unused space between the underneath side of the sink and the under side of the fiberglass helm seat support that I could run the 60mm ducting. This worked out quite well and then I thought it would be really nice to run some ducting to the V-berth. So, I bought a 60 mm Y connection and with some fiddling and moving of wires, was able to fit it onto the outlet of the heater.
Y-connection:
I mounted the heater control beside the helm, so that it could be easily reached from inside the V-berth for those cooler mornings at anchor.. :wink:
Once fully installed, I turned the heater on and WOW. This thing really puts out heat. It is a little noisy at first (sounds like a small jet engine coming up to revs), but after a few minutes settles down to a low-pitched whine. Not completely quiet, but it is a forced-air heater after all......
I have no more smell of kerosene in the boat now, (the Wallas stove/heater was kerosene only - not diesel) and I find that kerosene is much more pungent than diesel. We really can't smell the diesel tank (located where the Wallas fuel jug was) at all.
The next issue was the cooktop. I purchased an Origo alcohol stove and cut the top of the molded fiberglass galley for it to fit. No problem. Time will tell if the Origo will suffice, but it has to be more reliable than the Wallas was, and we still have the induction cooktop when at shore or when we run the Honda 1000 generator, as well as a propane canister barbeque and a canister propane stove.
Wallas - don't let the door hit you on the way out!
