Hello all, I'm currently evaluating a geo proposal to include a WF 7 for heating and cooling, + a dedicated heat pump for domestic hot water. Currently I have a natural gas boiler and wate heater, both of which are 22 years old and we fear are about to break on us at the wrong time. We very much want to go the geo route for environmental and $ savings purposes. I'm awaiting natural gas usage data from the past several years and plan to compare that to estimated geo costs. I'm thinking that it will be a win for the geo system. As far as hot water goes, will a dedicated WF series 5 geo heat pump + passive storage tank be cost effective when compared to tankless natural gas heaters? I know that questions approaching this one have been asked here in the past, but I can't dig up a direct comparison. I'm in Western NY. Thanks for your input!