Compact fluorescent lights use roughly 75% less energy than incandescent bulbs and can last 10 times longer; LED lights also use 75% less energy and last up to 25 times longer.
Grey water systems can be installed in private homes for relatively low prices. Doing so can cut a household water bill from 30% to 70%.
Homeowners can have the glass double-glazed; ensure frames are properly fitted and insulated; install dynamic facades that adapt to sunlight.
In a growing number of states, particularly those that experience frequent droughts, low-flow faucets are becoming mandated, and traditional models are no longer available on the market.
Installing new insulation may cost money in the short term, but it can save an average of 15% annually on heating and cooling bills.