Having hot water for showers and dish washing is certainly a joy that makes off-grid feel as luxurious as on-grid, yet without utility bills or fossil fuels. Where I live, summer sunshine is abundant, ...

MARTHA’S VINEYARD, MA — Nelson Mechanical Design installed a 20-collector solar hot water drain back system to provide pool heat, radiant floor heating, and domestic hot water pre-heat for a customer.

Solar water heaters work by absorbing sunlight in solar collectors and saving the heated water in a storage tank. Both active and passive solar water heaters are available. Active systems are ...

When Terry McIlveen built his home in Maine in 1997, he made the unusual choice to install radiant floor heating. “People thought I was nuts,” he says. However, since that time, radiant floor heat has ...

Dear Jim: We have a large family and use much hot water. I cannot afford to have a solar water heating system installed, but I would like to make some type of solar water heater myself. What do you ...

It took a while to decode the email I received from Carroll Hampleman (you can see why below), but his home made water heater is worth the bother. Mirrors are arranged to reflect and concentrate the ...

Nicholas Gill receives funding from the Australian Research Council and the NSW Department of Primary Industries Chris Gibson receives funding from the Australian Research Council. Gordon Waitt has ...

We live in interesting times. Never before have we witnessed so much change in so little time. Whether we resist or embrace change, it is still inevitable, but if we actively embrace the changes we ...

On a recent visit to Yunnan Province in southwest China, I was pleasantly surprised to see solar water heaters on countless home and building rooftops, even in remote rural villages. These ...

A research group from Ireland developed a PVT system consisting of a 170 W photovoltaic panel connected to a water tank placed at the backside of the PV module itself. The PVT module is able to ...

This could save up to AUS$6 billion in household electricity and energy costs by 2040. Image: Horizon Power. Public policy think tank the Australia Institute has released new research arguing that ...