Our Top Picks: Series 200 Tankless Water Heater for $701.53; T-H3M-DV-N High-Efficiency Tankless Water Heater for $839.18; or T-H3-DV-N Natural Gas Tankless Water Heater for $1,247.95. Advertisement ...

But high-efficiency water heating technology exists in the form of heat pump water heaters. These heat pump water heaters don’t waste time burning gas to heat water.

High-efficiency water heaters typically cost more than old-fashioned tank heaters, and installation costs can also be high if you’re switching to an entirely new type of water heater.

High-efficiency water heaters typically cost more than old-fashioned tank heaters, and installation costs can also be high if you’re switching to an entirely new type of water heater.

"A tank water heater stores and heats large amounts of water and is suitable for homes that have a high demand for hot water. A tankless heater is more energy efficient as it heats water on demand.

Given that the average thermal efficiency of gas water heaters shipped in fiscal 2022 was 85%,5 this represents an efficiency improvement of about 3%. The setting of this target standard value is ...

High-efficiency water heaters that run on natural gas, oil, or propane are described above; information on solar water heaters is below.) Home Energy Audits.

Trump once expressed concern with how low showerhead flow affected his "perfect" hair. Now back in the White House, he's again taking aim at some high-efficiency household items — and that may ...