high efficiency homes How to make a cheap, nontoxic solar cell (ok to be inefficient)? Current high-efficiency solar cells are apparently still bad for the environment (manufacturing) How would you make at home a cheap nontoxic solar cell using common materials? It’s ok if it is not very efficient, but I was wondering if it [...]
geothermal home heating cost Canada – anyone know when the government grants/rebates end for geothermal installation? I’m looking to build a home but the Canadian goverment (federal and provincal) do not offer any grants or rebates to owners looking to install a geothermal heating/cooling system in a new build. Only exisiting owners looking to renovate [...]
most efficient homes USACE builds super energy-efficient homes in Ansbach Heating For Home
energy efficiency house I have a gas boiler from 1967. The energy assessment last year said that it had 77% efficiency.? It looks as though the pressure goes up to between 5 & 10%. All of my radiators get hot (steam heat) but it takes awhile. I have the adjustable valves on most of them. [...]
