Water efficiency / Guides

Water efficient Boulevard FloWise toilet from American Standard
Bathrooms

Efficient toilets for LEED homes

...water use of a home , so toilets that carry the EPA WaterSense® label are a great place to start looking. Then comes the choice of either single flush or dual flush- it's a bit of a toss up but in the end we chose to go with single flush models, because when human nature is factored in you aren’t always guaranteed to s...

heat pumps in tandem with heat pump hot water tanks
Heat pumps, geothermal and AC

Increased efficiency with heat pumps working in tandem

...water hybrid electric heat pump hot water heater that borrows that efficiency and significantly cuts the energy required to meet our domestic hot water needs. Related topics to how well heat pumps work In LEED or Passive House homes : The benefits of coupling air source and water heater heat pumps Comparing gro...

Rain barrels for storm water management and rainwater harvesting
Rainwater Collection & Watering

Introduction to rainwater harvesting

...water can run straight into nearby waterways and aquifers. If there are ways to divert water-to-water storage areas, you can change street rainwater from being a problem to a resource. The third source of rainwater is the roof. Even in areas with low rainfall there is enormous potential for harvesting rainwater. A 1,...

Water efficiency
Plumbing and water heaters

How to save money on your hot water bills!

...water heat recovery Grey water heat recovery drain pipe © Ecohome Grey water heat recovery is a system that runs your hot water intake through thin copper pipes wrapped around your shower drain, so the water feeding your hot water tank is preheated by the hot water going down the drain. The model shown above wi...

the installation of a LucidPipe power generator via Lucid Energy
Micro-hydroelectric

Portland, Oregon will Soon Generate Hydroelectric Power in Water Pipes Under City Streets.

...water mains when replacing old leaking pipes. As explained on the Lucid Energy website , " The hydrodynamic turbine has been carefully designed and lab-tested to maximize efficiency and power generation without interrupting the flow of water. As velocities increase, power production increases. Due to the lift-based d...

Hydronic heating system
Delivery: radiant, forced-air and decentralized

Hydronic heating

...water heaters Combination hot water tank and boiler Combination solar water heater and boiler Geothermal heat pumps Hydronic radiators and baseboard heaters will transfer heat in the same way as electric resistant heat sources. So for comparison shopping, efficiency of heat generation isn't as much an issue a...

Aeratron AE2 ceiling fan
Ventilation

Ceiling fans and air circulation- video

...water heater work together in boosting the efficiency, and the ceiling fan is a big part of making that happen. This video explains the relationship between those systems. Thanks to our sponsor Aeratron for providing super efficient and quiet ceiling fans that fit in nicely with the look of this LEED v4 Platinum certif...

Ductless mini-split air source heat pump installed in a LEED certified PH Home
Heat pumps, geothermal and AC

How heat pumps work in a LEED or Passive House high efficiency zero net energy home - video

...water hybrid electric heat pump hot water heater that borrows that efficiency and significantly cuts the energy required to meet our domestic hot water needs. We could have fitted some baseboard heaters for zone heating but they are often noisy and need fixing and we decided they wouldn't be needed. Related topics ...

Heat pump hot water heaters, why they're a good idea
Plumbing and water heaters

How heat pump hot water heaters work and why you should get one

...water heaters, good or bad idea? Water heaters are generally the biggest energy drain in a home after heating . so Air-to-water heat pump water heaters are potentially a big energy saver, particularly when the main heat source in a home is an air source heat pump, as the water heater can in effect 'borrow' the effici...

Exterior compresssor heat pump water heater
Plumbing and water heaters

Heat pump water heater with exterior compressor

...water heaters on the market, which, rather than heating water with an electric coil as a normal electric hot water tank does, employ an evaporator to extract heat from the air (either interior or exterior) and use it to make hot water. The byproduct of an air-to-water heat pump after it extracts heat is cold air, so ...

Are low-flow shower heads worth the money?
Bathrooms

Are low-flow shower heads worth the money?

...efficiency in one package looks like. Drain water heat recovery Drain water heat recovery: Before entering your water heater, the cold water feed goes through thin copper pipes wrapped around the drain. Heat from the draining water therefore warms the incoming water before it enters the water heater. This is an...