Originally Posted by picklesandjesse
OK, I get it !!! It's going to be cold and wet, but we will not die!!( we will of course, maybe soon ) But you have to understand that 40 degrees C here in Australia
is not that great either. Can anyone recommend a heating
system that will suffice for the late spring and summer into Oct? I think it might make life a bit more bearable for us. I checked the weather
the other day where the boat
is and it was -3 degrees but should be about 7 degrees to maybe 12 degrees when we arrive April 20th. Thanks for the help John
Heating is a whole science up here. Get it right and you're cosy year round. Get it wrong and you're miserable almost year round. Basically three more or less decent variants, all diesel fuel
Type 1. Pot heater
(Dickinsen, Sigmar, etc.) mounted on a bulkead, with a chimney through the deck
. Plus sides: user serviceable, simple, zero electrical consumption
. Downsides: have to cut a hole in the deck
, takes up space, hard to modulate heat, soot on the sails
Type 2. Air-based forced burner truck type heater
(Webasto, Eberspacher, etc.). Mounted usually engine
compartment or lazarette, exhaust
through transom or topsides, takes up no interior
space (and the unit itself is very compact). Heats via air ducts. Plus sides: can distribute heat over a larger area, very effective, relatively simple installation
, relatively inexpensive. Downsides: noise
, electrical consumption
, requires professional service
, does not heat domestic hot water
Type 3. Water-based ("hydronic") forced burner truck type heater (Webasto, Eberspacher, etc.). Like Type 2 except distributes heat using water
, like a home central heating
system. Plus sides: Can distribute heat to unlimited number of different spaces, most efficient, individual modulation of heat per space, heats domestic water (a VERY big plus), quiet (if you use radiators instead of fan coils). Downsides: electrical consumption, requires professional service
, expensive (about like air conditioning).
Around here, 90% of boats under 40 feet use Type 2 and 99% of those are happy with the system. Over 50 feet, 90% of boats use Type 3. Around here, Type 1 is more for traditionalists, historic vessels, adventurous voyagers who sail far from professional help.
So there you have it in a nutshell.
One other aspect of heating is the use of engine
Domestic hot water is really important here because your tank water will be too cold to bathe in. You should have a proper calorifier
with engine coolant
loop in it and electrical immersion heater, but 99% of all cruising boats will be fitted with that from new. But not all of them have decent circulation of the coolant
through the calorifier
(don't ask me how I know), so worth checking and correcting if necessary, because this function is important.
You can also get extremely useful heat, at not great expense, and zero running costs, by running that same engine cooling
loop through a bus heater in your main cabin
. Then whenever you are motoring, you can get the cabin
nice and toasty -- and DRY -- without expending any diesel fuel
. To get the coolant through both calorifier and bus heater you might need a booster pump
Good luck! With good heating, you will sail with pleasure year round. To lie at anchor
on a cold evening but snug and warm inside is indescribably pleasant and cosy -- one of the joys of this sport.