I installed a tankless water heater two years ago in my stick home. After much research, I decided to go with a 200,000 BTUH unit. Two reasons I bought it: 1. Less maintenance 2. Provided extra floor space in Utility Room. I have never had a problem running dishwasher, washing machine and shower at the same time. When we travel, I like the convenience of just shutting it off and forgetting about it. I do not feel there is a realistic energy savings, at least I have not noticed it. The price installed was about $2500, which is much more then a tank style water heater. Also had to increase my natural gas line to the unit. Could have installed a 120,000 BTUH unit but it would not have managed multiple outputs.
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