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Oil to Gas conversion, many options - what to choose
I'm in the midst of getting estimates for a Oil to Gas conversion. All the contractors appear to know what they are doing but the equipment is allover the board - they all have their favorites. I've read a lot of posts and I understand that the installer/installation is a big part of the job (crap installation on the best boiler will diminish it's ability to function properly) and I want to make sure they can/will service what they put in. They have all done heat loss calculations and made their recommendations - from boilers with indirect hot water tanks to Combi units - all with full outdoor resets. I live sw of Boston, house is 27 yrs old, all new windows and doors, 2000 sq ft living space. 2nd floor is all baseboard hot water heat. 1st floor is 1/2 radiant and 1/2 baseboard hot water. I'm concerned that the Combi units will not provide adaquate DHW and heat with a bad NE winter. I've got Lochinvar Combi, Bosch Combi, Lochinvar bolier with Indirect, Viessmann boiler with Indirect, TT, HT Elite with Indirect and Navien Combi estimates. Just looking for some pro's and cons from the forum on what to consider/avoid. I'm leaning towards a boiler with indirect, but I'm no expert. I've learned more about heating systems the past few months than I ever wanted to know :-) Thanks for any and all assistance!!