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Paul Wheaton is with Ernie and Erica Wisner. They talk about the Rocket Mass Heater workshop held at Caleb and Krista's in Missoula at the end of October 2012. They point out that it was a great success that brought together many interesting people with varied skills.

Ernie and Erica talk about how they travelled across the country to give workshops. They talk about some rocket mass heaters they troubleshooted. They point out that it is difficult to get the manifold right the first time, especially since it is not necessarily clear in the Rocket Mass Heater book. Paul points out that Ernie and Erica have very complete plans available and that the Rocket Mass Heater described in those have been in used for at least one year without any issues.

Paul, Ernie and Erica then move on to the controversial hot water Rocket Mass Heater, also known as boom-squish. They emphasize that it is extremely dangerous and that unless one has lots of experience with pressurized hot water, one should not attempt to build such a system. On the other hand they point out that non-pressurized systems are much safer.

They talk about the big reveal that was one of the highlights of the workshop: a shippable Rocket Mass Heater core, manifold and barrel. They explain that the core is made out of a castable ceramic and that the system is 80% hotter than regular Rocket Mass Heater.

They also talk about a few Kickstarters that are about to be launched: Two for the shippable Rocket Mass Heater and some for DVDs of the workshop.

This podcast continues in part 2.


6" Rocket Mass Heater Plans
8" Rocket Mass Heater Plans

Relevant Links

Ernie and Erica's Website

Paul's article on Rocket Mass Heater

Podcast 019 - Rocket Mass Heaters
Podcast 104 - Rocket Mass Heaters with Ernie and Erica
Podcast 128 - Rocket Mass Heaters, Money, and Permaculture
Podcast 196 - Rocket Mass Heaters w/ Ernie & Erica

Underfloor Rocket Mass Heater Video
12 Rocket Stove Mass Heaters – efficient wood heat Video

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That was an awesome podcast
master steward
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Location: Moved from south central WI to Portland, OR
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Boy, that guy that pushed the "exhaust your heater into a greenhouse" must have been super obnoxious, because y'all covered that six ways from Sunday! It was interesting to hear you talk about this, because in an old hobby of mine (ornamental aquarium horticulture, or heavily planted tanks) many people use CO2 tanks, or yeast digesters, to enhance plant growth. (I never did--that was too fiddly, and if your system breaks down in any way you can wake up to dead fish.) If anybody wanted to spike the CO2 in their greenhouse, I'd advocate for fermentation or critters as a safer source of CO2.

Just FYI, room air has 21% oxygen most of the time.
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Location: Kingston, Canada (USDA zone 5a)
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Yeah, the guy was quite pushy about it, but it was also brought up at other time during the last day of the workshop. Some people thought that they could make it work. I think Paul, Ernie and Erica's point is that it can be done, but that it is inherently unsafe.
expectation is the root of all heartache - shakespeare. tiny ad:
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