DoesTheMath

Find what replaces your water heater

The model number on your unit's rating plate or its DOE certification filing — either works. This looks it up in the same registry every page on this site reads, not a shortlist.

Type the model number from the rating plate on your old heater. If the registry knows it, you get every model on file today in the same class — same fuel, type and draw pattern — with its efficiency and what it would cost to run instead.