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Natural gas On demand brands
I'm replacing a side arm domestic hot water storage tank with a natural gas fired on demand heater. I'm just starting my research on what to buy. My plumber recommended a Navien brand heater. What brands are best? And how to do determine the BTUs that we need? We have a small home in Colorado with just the 2 of us. No dishwasher, and hot tub that we use a lot, so we take fewer showers.