There are big developments happening in the world of water heaters. 120 volt heat pump water heaters are set to hit the market (most by early next year) allowing homeowners with gas water heaters to easily switch them out for heat pump water heaters without expensive panel upgrades. This opens up the world of efficient water heating to many more households, because they won’t have to rewire their homes to make the switch.
Updated: Editor’s note - a previous version of this article stated that the Rheem 120 V water heater was already for sale. This water heater is expected to hit the market in the first half