Turn down the waterheating setting (just 2 degrees will make a significant saving).
关掉加热水设备(只有3摄氏度就会有很大的节省)。
2
Off-grid energy systems such as photovoltaics, solar waterheating, and on-site water collection can keep basic services going.
非常规的能源系统例如光电科技，太阳能热水及就地取水都能运作建筑的基本设施。
3
“Waterheating makes up anywhere from 15 to 25 percent of the annual energy usage in a home, ” says Steve Koep, a regional sales manager for Marathon water heaters.