Rainbarrels painted black to heat up both the water and the greenhouse. Probably only useful in temperate climates.

Could we store rain barrels in the greenhouse to keep them from freezing?These barrels collect water off the roof where it heats up warming the greenhouse in the winter. could heat a house too.

Curing Potatoes #2. Curing potatoes before winter storage is an important process that will help assure longer storing times for your potato crop.

Curing potatoes before winter storage

Curing potatoes before winter storage is an important process that will help assure longer storing times for your potato crop.

Rocket Mass Heater : rocket mass heaters are the cleanest and most sustainable way to heat a conventional home

rocket stove mass heater permaculture article by paul wheaton - Less wood, exhaust is just steam and heat from one fire lasts for days, you can build one in a day and half, and people have built them for under 20 bucks.

DIY Greenhouse Soda Can Solar Heater - Heat up your greenhouse using solar energy and extend your growing season...

This is such a great video on how to build a solarpanel! DIY Greenhouse Soda Can Solar Heater - Heat up your greenhouse using solar energy and extend your growing season.

Chauffage : Réduire votre consommation de bois de 80%? Oui, oui… – L'Humanosphère

Announcing a Rocket Stove Prototype Workshop with Ernie and Erica Wisner - Milkwood - Real Skills for Down to Earth LivingMilkwood – Real Skills for Down to Earth Living

rocket heater produces whole house heating when the exhaust tube is run under the container's foundation and insulated by straw bale...collapsing after a day's work by fishermansdaughter, via Flickr

Rocket Stove mass heater used for heated floor to go under Yurt! Sweet set up! I could totally use this as a vertical setup for a greenhouse solar heater, easier than using 150 cans!

pearlite and clay as insulator for interior tube. good shots of connecting tube to bench pipe.

pearlite and clay as insulator for interior tube. good shots of connecting tube to bench pipe.

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