Tankless Water Heater
Traditional water heaters keep a full tank of water warm all day and all night, wasting energy. Your tankless heater will only heat water while you need it, so you do not have to pay a premium for those 15 minutes of hot water you use. It may be a big upfront investment, but you will recover the money in energy savings over five to seven years depending on how much hot water you use.
On average, toilets are the single largest use of water inside of a house. Older models can use up to five times as much water as state-of-the-art versions, driving up your monthly water bill. Cut back by installing a low-flush or dual-flush toilet.
The most obvious payoff for solar energy is in conventional power conservation. Solar reduces the need to burn fossil fuels in order to generate electricity, resulting in less air pollution and helping offset global warming. A whole-house system can have an expensive up-front cost; however, many states and cities provide attractive financial incentives.
Active and passive solar are the two approaches and are characterized by the way they capture, convert, and distribute sunlight. Active solar techniques include the use of photovoltaic panels, solar thermal collectors, and electrical or mechanical equipment to convert sunlight into useful outputs. Passive solar techniques include orienting a building toward the sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate.