I installed a Webasto Airtop 5000 into our 39'' Prout Escale. It replaced a DL4C from Espar that had rusted through completely due to water ingress via a crappy
hatch in the rear (that''s another story)
We rebuilt the
hatch to incorporate drains (what a novel concept) and then installed the webasto I bought at sure marine in WA. Their home-made installation manual was simply amazing in detail, they really cover everything. The standard Webasto manual is rather limited.
Would the DL4C have lasted longer under non-soaking conditions? Probably. But I''m delighted with the Webasto we have. The unit runs well and keeps the crew happy and warm. The variable speed fan is a real plus. The Webasto also costs less than the Espar competition.
If you want to see the stages of the retrofit/fix, follow the links on vonwentzel.net to the Prout Escale section and then onto "Lets Just Pretend it''s Warm".