How soon do you have to buy heat pumps and EVs to avoid climate catastrophe?

Published by The Washington Post:

“Just 1 percent of U.S. homes have installed heat pump water heaters, which deliver hot water with ultra-efficient heat pumps, making them one of the least-common climate technologies in U.S. homes.[…] The biggest reason to switch is saving money. The appliances are as much as four times more efficient than comparable gas water heaters, saving one ton of CO2 annually on average, reports the nonprofit New Buildings Institute. The appliances cost about $117 annually to operate for a family of four compared to $200 for a gas water heater or $550 for electric resistance.”