Recommendation for Tankless/Condensing Boiler?

Takagi, Rinnai and Bosch for home HW, Takagi has a 94% condensing unit, you wont need a holding tank with these units, you just size them right. A holding tank is a backwards step or realy just a tank WH. I use a

Going with the condensing boiler is the first objective as a space saving measure. Then the options seem to be to go with a combi (boiler/h2o heater) or an indirect storage tank. Adding an additional tankless h2o heater would incur a much larger expense.

Any recommendati> Takagi, Rinnai and Bosch for home HW, Takagi has a 94% condensing unit,

Find a qualified contractor, not one that says, "Yeah, we can do that." Go with the brand they like. They've most likely had advanced training and will know any quirks a unit has.

Heat Man: I have been unable to find contractors that are familiar with these units through any other resource than the boiler manufacturers themselves; and when the manufacturer is feeding the contractor leads, the contractor has to recommend that brand.

As an aside: The two c> Find a qualified contractor, not one that says, "Yeah, we can do that." Go