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Wisconsin | you can buy a tank type high efficiency power vent gas water heater, even condensing. That's what I'd do before a tankless with hard water. Take a look at the procedure for acid flushing tankless, then decide.
If you think gas is going to stay cheap, a power vent standard efficiency would probably be worth it. If you think gas will go higher soon, then look at a heat pump electric in front of your existing water heater for more capacity. | |
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Whole house tankless water heaters
