I'm in need of a new oil-fired boiler. House is approximately 950 sq ft, all on one floor. Ceiling ht averages a bit over 9ft. All the windows - and there are more of them than exterior wall -are new low e insulated glass. Heat will be supplied by cast iron baseboards and two kickspace heaters. Insulation is open cell foam. Primary heat source will be a Woodstock Fireview. Following a substantial rebuild of the house, turned on the water and refilled the boiler - which promptly leaked out all over the place from inside the cover. Have spoken to several pros and their opinions are pretty similar; it's either cracked or a flaw in the brand of furnace (Smith) where the castings contract and the connection between teh sections open up when it cools down. Either way it will need to be replaced - not willing to keep an oil furnmace hot 24/7/365 when it is primarily used for hot water via an indirect tank system. I've looke dat a few of the hi-efficiency units but question the payback considering I use between 100 and 200 gallons of oil per year. What I'm looking for is some feedback on the currently available brands and the experience users have had with them. Converting to electric, natural or propane gas is not an option. An oil fired hot water heater is not an option - I need the furnace as back up heat and in case of the possibility that I may sell the house at some point in the future. Thought briefly abouot the possibility of returning the Woodstock and putting in a wood fired furnace but I am in a suburban area and don't wnt to dela with the potential hassles with the neighbors - or with wood burning all summer.