Ernie and Erica Wisner are a couple from Tonasket, Washington, United States, best known for their innovative rocket mass heater designs.
Erica and Ernie initially planned to share information about all different types of natural building, but their fans demanded otherwise.
[1] Ernie and Erica now spend their time touring the world teaching workshops on how to build these energy-efficient, natural heaters.
[2] They are also working to design and build a stove that will get an Underwriters Laboratory (UL (safety organization)) listing, which would eliminate insurance issues.
The films cover a workshop, and are titled Fire Science, Sneaky Heat, Boom Squish, and Hot Rocket.