I wonder if you’d consider posting our Kickstarter project, for a new book entitled the Rocket Mass Heater Builder’s Guide. This book shows how to build a rocket mass heater, so you can enjoy overnight comfort from a brief evening fire.
“Here is a review of our Rocket Stove after using it for 3 winters.”
Reader question: What’s the best heating system for a 300 sq. ft. scoria bag roundhouse located at 5,000 ft. in western Colorado? I’ll use 2’ of blown cellulose insulation in the roof (about R-55).