Hi: While waiting for the initial yard work estimates (due next wed) we want to start planning one of the planned upgrades. That is, air conditioning. Calculating the cubic feet, it seems that a comfortable level of AC will be abour 48000BTUs. Now, there are essentially 2 ways to do this, a central compressor/cooler and circulating pump, circulating chill water (antifreeze) to heat exchangers is the first. From an effeciency point of view, this seems like the best bet. Also, since we need heat as well as AC, it seems to me that a deisel-fired furnace which can heat the circulating fluid somewhere in the circulating system will be able to provide heat as well. The other method would be to install individual AC (reverse-cycle) units for each compartment. Both methods would be able to provide individule temp control. The vessel has lots of physical room below decks, so I don't think space is an issue. I would add a relativly small genset to power the heat/cooling system, so power is not an issue either I think. Has any one done this sort of thing?? I would be interested in hearing of your experiences with these sorts of installations, as well as what manufactures were used and costs of install. Bob -- --------------------------------------------------------- Kelly and Bob, soon to be living and cruising aboard the m/v Tamara B. Cape Elizebeth Me. http://www.tamara-b.org kelly@tamara-b.org bob@tamara-b.org 411 Walnut Street #1885 Green Cove Springs, FL. 32043 ---------------------------------------------------------