The Big decision - Stay with gas or electrify
120V Heat Pump Water Heaters available in the market for emergency replacement of gas water heaters

No electrical work or hard wiring required with a 120V Heat Pump water heater. No electrical panel upgrade required. Simply plugs into a 120V shared circuit outlet. 15A or 20A breaker.
***Recommendation – Because the recovery (measured in “First Hour Rating” or “FHR”) of the 120V Heat Pump water heaters is significantly slower than gas, upsize the tank 2 fold compared to the gas tank that you are replacing.
-If you are replacing a 30 gallon gas tank, opt for a 50 gallon 120V Heat Pump water heater or larger.
-If you are replacing a 40 gallon gas tank, opt for a 65/66 gallon 120V Heat Pump water heater or larger.
-If you are replacing a 50 gallon gas tank, opt for an 80 gallon 120V Heat Pump water heater.
Note: For a swap out of a standard electric water heater, a remodel or new construction project where access to 240V 30A is not an issue, select a standard 240V Heat Pump water heater. See the section https://newwaterheaterdecisions.com/electric-water-heaters/