Tankless Water Heater Cost for a 2,000 Sq Ft House

These are planning estimates rather than a quote: local labor rates, the model you choose, and changes needed to your gas line, venting, or plumbing can all affect the final price.

Your home’s square footage alone does not determine the right heater or its cost, because the important question is how much hot water you need at the same time. A household that runs two showers and a washing machine together may need a different setup than one that uses those fixtures separately, even if both homes have the same floor area.

Start by identifying the showers, faucets, and appliances you may use simultaneously, then add their hot-water flow rates in gallons per minute (GPM). You also need to account for the temperature rise: the difference between your incoming water temperature and your desired hot-water temperature, which can be greater in colder climates.

Our 7.5 GPM natural-gas tankless water heater for indoor installation is one option to consider when comparing your household’s demand. The stated flow rate alone does not establish whether it will meet your needs in every season, so have an installer evaluate the expected flow at your local temperature rise.

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