Affiliate disclosure for our tankless water heater comparisons

As an Amazon Associate we earn from qualifying purchases.

Product links marked “See price” take you to Amazon. We may receive a commission if you make a qualifying purchase through those links. Your purchase, payment, delivery and any returns are handled by Amazon or the relevant seller.

Affiliate links do not establish that a heater is correctly sized for your household, that your gas line or electrical panel can supply it, or that it is permitted where you live. Check the exact model, stated flow rate, fuel, voltage and amperage, included items, seller, price and current availability on Amazon, and confirm the installation with a licensed professional before purchasing.

Our editorial ratings follow the published methodology. They are documentation and public-review indexes, not customer reviews, and we have not installed the units ourselves.