PeterQ":mqhrg6qk said:
My question is how easy is it to retrofit the Wallas 1800 on a CD-25?
I haven't fitted one (obviously), but I have read a few thread inputs by those who have, and I've spent some time noodling it under the galley on the 22. (Check Dora Jean's and Life of Riley's albums for a 1300 installation on a 25 and a 22 - there are good photos and commentary.)
I'd say it's not that hard, for a boat project. In other words, you'll be in a cramped location, making dust and holding up heavy parts

But no, seriously, it doesn't look that bad to me, and if you're doing the installation you may take the (extra) time to save a bit of stowage space here and there (whereas someone you are paying can't always justify that extra hour or two [that they are billing you] to save a tiny bit of space, or whatever.
One good comment was to remove the sink while you're doing the installation to make it less back-breaking. On my 22, the "obvious" options seemed to be under the galley - either against the hull side, or on the forward or after bulkhead of the galley lower unit. I don't know if there might be a third option in the storage locker aft of the dinette on a 25.
There is an exhaust through-hull that needs to be placed (location dependent on where you put heater; there has to be a certain "swan neck" to the exhaust pipe); on my boat, and with the through-hull holes I already have, it looked like it might be easier to swap the sink drain hose with the (existing, smaller) Wallas outlet through-hull, as sink drain hose is a lot more forgiving to run than metal exhaust pipe. You won't have the same holes to re-use (since you will have no Wallas stove already), so you'll probably have more freedom to locate it.
Take these comments with a grain of salt since I have only "planned" an installation but not done one.
Sunbeam :hot