On staying warm
When we were living on ZTC back in Canada, and during our initial trip south through the US, we had some very cold days and nights. While on the dock, plugged in to shore power, we used a simple residential electric space heater to take the edge off the cold. Once underway though, that option was no longer available to us. Instead, we just sucked it up and wore more clothing layers.
When we reached the warmer temps of the south, we figured we were done with that problem. We packed our long underwear into a stuff sack, stored it all away, and figured we’d never have to consider how to stay warm again. Oh, how things change.
Regardless of what boat we end up with for our Patagonia expedition, I know we’re going to need some type of heating system. Electric heaters are out of the question as they draw far too much power. I have also been told that the reverse cycle heating available through most air conditioning systems won’t work effectively either.
What I have heard of working are the following:
1. A diesel stove, similar to the ones made by the Canadian company Dickinson
2. A diesel-fired air heater, similar to the Espar ones
As it stands, I have no experience with either of these systems so more research is definitely required. Fortunately, we still have a bunch of time to make a decision on this. We don’t even have the boat yet!
EDIT: Shortly after posting I came across this link from Attainable Adventure Cruising. It spells out the pros and cons nicely, and there’s some good info in the post comments too.