Which one would you guys choose? Im stuck.
They are not similar products, the AO Smith is a gas-fired condensing hot water heater, the Buderus is a indirect hot water heater that requires a external boiler as the heat source.
So not being apples for apples it depends on if you have a boiler, and its type of operation and efficiency.
Ah thanks... I now see what the Buderus is.