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"rocket

You can get these plans HERE through our dailyish freebies!

Here's some more about these plans:

These plans are six pages including photos; scale drawings of the floor plan, elevation, and sections; a cutaway view; and builder's notes on the construction process. They show you how to build a rocket mass heater with L-shaped heated bench, using the rocket mass heater clean-burning and super-efficient wood burning technology. The '6' refers to diameter of heat-exchange ducting.

This design provided the sole heat for an older Portland cottage/apartment of about 800 sf. Erica and Ernie used less than half a cord of salvaged wood per year (local arbor trimmings and building debris) to heat their home for four years in a row. They ran the fire 2 to 4 hours in ordinary cool, rainy weather, and up to 6-8 hours when the weather dropped below 20 F, for constant 24-hour warmth. In summer, the earthen bench was not heated, and instead helped keep the house cooler than it had been in previous years with no need for fans.





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