The new rules, which were published by the Department of Energy just after Christmas, also stipulate that new tankless gas water heaters must rely on 13% less energy than the least efficient ...

Gas tankless water heaters offer the most power but tend to be the most expensive to purchase and install. However, electric water heaters will typically cost more in energy bills, so there is ...

Traditionally, domestic hot water has been generated by energy-intensive methods like electric resistance heaters or gas-fired water systems, which can result in high energy costs and significant ...