Efficient heating / Discussions

I will probably build a solar panel with layers of black screen. My question is, I have a patio door with a thermal pane in it. Could this be used for the glass cover of the collector? For a DIY solar air heater that sounds like it would work fine. It may help you even more than a single pane of glass as a thermal pane...

...heating/cooling of this house? I should have two heating sources, I've heard.  Some options: -Mr. Slim ductless system with a zone for each floor? -hydronic underfloor heating for the main floor (seems feasible to install from basement ceiling) -new electric baseboards -geothermal system with some kind of hydronic syst...

...heating again when the air temperature drops below the temperature indicated on the thermostat. These noises are caused by the expansion and contraction of metal parts in the radiator as it goes through a heating and cooling cycle. So what you’re hearing is not dangerous, but if it is really irritating you, you could ...