Torn between tankless, hybrid, and power vent water heaters
We are going to be removing the chimney and steam boiler with indirect water heater attached to it. Heating and cooling of the house is covered by air source heat pumps and living room is heated by 98% efficiency natural gas furnace.
So now I have a choice to make to replace the water heating setup between three choices:
1. Power-vent water heater seems to be the cheapest route, but I was hoping to draw air from outside and don’t think my plumber knows any with that option
2. Siemens tankless high efficiency unit
3. Go with hybrid heat pump water heater
My architect likes #3, since I have 1100 sq ft basement and since it is older kind, it can always use some dehumidification. My concern is I am in Boston area, which is Zone 5, and that heat pump will be eating a lot of heat from my house.
#2 seems to attract as many opinions as plumbers I spoke with.
#1. 83% efficiency units sucking air out of the house, yet the cheapest option.
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