Spend $100 Once. Get Free Heat Every Winter (No Gas Needed)

A cheap box on your south wall can turn winter sun into warm air for your room, with no fuel. In this video I show what it's made of, how it's built, and the one part most folks leave off. Honest note up front: it heats while the sun is on the wall. It is not a furnace and it won't carry you through a gray week. It takes the edge off on sunny days. My book, over eighty chapters of fifty-plus years of what I know: https://eliasmercer.com Your results will depend on your wall, your weather and how tight you build it. Check what's behind your siding before you cut, check local building rules, and take care with hot surfaces and glass. This is not professional advice. Don't let the old days go, friend. #solarheating #offgridliving #diyheating