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Rocket Mass Heater Resources Wiki

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This perennial document aims to become a hub of comprehensive information pertaining to Rocket Mass Heaters.

Know of something that should be added to this list? Leave a comment!


Getting Started



compare rocket mass heaters with other heating systems with the Heat Infographic
rocket mass heater faq
permies.com - rocket mass heaters forum
Overview

Rocket Mass Heater Videos

What is a Rocket Mass Heater?


What makes a Rocket Mass Heater so efficient?


Clean, cool exhaust from a rocket mass heater.


Justin Rhodes learns rocket mass heaters with Paul Wheaton


Step by step rocket mass heater construction


Movies



Free Heat movie
Better Wood Heat: DIY Rocket Mass Heaters (8-Movie Set) by Paul Wheaton
Rocket Ovens Movie + Rocket Oven Plans + J-Tube Plans Bundle
Wood Burning Stoves 2.0
12 rocket mass heaters documentary - 37 minutes
See more rocket systems in 65 Low Tech Things - tour movie

Books



Rocket Mass Heater Manual by Ernie and Erica Wisner
rocketstoves.com Leslie Jackson and Ianto Evans book
rocket mass heater risers: materials and design eBook


Plans



Free - 3D Plans - Pebble Style Rocket Mass Heater by Andres Berna
3D Plans - Rocket Engine an Uncle Mud design
Rocket Mass Heater Plans: Annex 6" L-shaped Bench by Ernie and Erica Wisner
Ernie and Erica Wisner's Rocket Mass Heater Everything Combo
Free Heat 6 Rocket Mass Heaters 3D plans bundle
Uncle’s Mud Cottage Rocket for your Sauna
Solar Food Dehydrator with Rocket Assist
Rocket Cooktop with Lorena Option


Websites



Ernie and Erica Wisner website
batchrocket.eu Peter van den Berg site
Unclemud.com
roadmaptolife.org
tallgrasshearthandhome.com Jim Schalles out of Nebraska builds cob batchbox rocket heaters to masonry heater code in the US
walkerstoves.com Matt Walker site
firespeaking.com Max and Eva Edlesons parts and plans and services for building rocket heaters, cookstoves, and masonry heaters
freeheat.info Free heat movie and extensive plans including a sauna and tiny house cob RMH
Make pizza and bake pie with the amazing rocket tech
woodheat.net Better Wood Heat movies
woodburningstoves2.com

Parts

rocketheater.com Site for the Liberator, a UHL-certified, code-ready, pre-manufacture rocket stove.
dragonheaters.com The Dragon Heaters company in Houston TX produces kits for 6" and 8" RMH from Peter Van Den Berg's Refractory J Tube design to masonry heater code standards.
dragontechrmh.com Thomas Rubino's web site for rocket heater parts
rocketheatergamera.wordpress.com the Gamera, a European manufactured rocket stove from Bulgaria.


Youtube Channels

Paul Wheaton's youtube channel
Uncle Mud's youtube channel

Podcasts

Gob of Podcasts about Rocket Mass Heaters


More

List of Rocket Mass Heater Builders
beautiful rocket mass heaters
Wikipedia

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https://batchrocket.eu is the link to Peter van den Berg's site:o)
Staff note (Beau M. Davidson) :

Added!

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This perrenial document aims to become a hub of comprehensive information pertaining to Rocket Mass Heaters.



Look forward to diving in. Thanks, Paul!
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Thomas Rubino's web site for rocket heater parts https://dragontechrmh.com/
Staff note (Beau M. Davidson) :

Added!

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Leslie Jackson and Ianto Evans' book https://www.rocketstoves.com/
Staff note (Beau M. Davidson) :

Added!

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Max and Eva Edleson's parts and plans and services for building rocket heaters, cookstoves, and masonry heaters https://www.firespeaking.com/
Staff note (Beau M. Davidson) :

Added!

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The Dragon Heaters company in Houston TX produces kits for 6" and 8" RMH from Peter Van Den Berg's Refractory J Tube design to masonry heater code standards. https://www.dragonheaters.com/
Staff note (Beau M. Davidson) :

Added!

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Jim Schalles out of Nebraska builds cob batchbox rocket heaters to masonry heater code in the US. https://www.tallgrasshearthandhome.com/
Staff note (Beau M. Davidson) :

Added!

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I love it. I would recommend arranging the information in some headings such as:
  • What Is It?
  • Where to Start
  • Inspirational Installations
  • Advanced Topics

  • Inside of those, group by media type (e.g. audio, video, article, book)
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    Jim Schalles builds rocket stoves and masonry heaters mid-continent: Nebraska, South Dakota, Wisconsin, Mississippi, etc. His website offers many good resources.
    https://www.tallgrasshearthandhome.com/?fbclid=IwAR0t_WCYz6ZHktKop7T7jlT4hodbfWHVTpgwan9QwUYynOlJOUT2E4K2noo
    Staff note (Beau M. Davidson) :

    Added!

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    Kevin Harbin wrote:I love it. I would recommend arranging the information in some headings such as:

  • What Is It?
  • Where to Start
  • Inspirational Installations
  • Advanced Topics

  • Inside of those, group by media type (e.g. audio, video, article, book)



    Kevin, I believe you're right!

    It'll take a while for me to get to that level of detail - if you'd be up for reorganizing a bit, I'd be happy to implement your suggestions!  If not, no worries, we'll get there as we're able!
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    Hi!  I hope I'm not "crashing" the party, as I am only barely beginning to read about Rocket Mass Heaters.  The problem I have, is I'd love to use Rocket Stove type efficiency as a retrofit for an existing house - one with a foundation that cannot support RMH.  My husband bought me the book without understanding that we cannot utilize any of the designs in our current home.  

    Is there a "small" rocket stove design that can be used to efficiently dump a lot of heat, rapidly, into a "typical" living area, for those of us trying to move from 3 to 4 on the Permies Scale?  =)
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    Briana Great wrote:Is there a "small" rocket stove design that can be used to efficiently dump a lot of heat, rapidly, into a "typical" living area, for those of us trying to move from 3 to 4 on the Permies Scale?  =)



    Yes, there are lighter ones that you can build. Keep looking at the resources in the top post. Your other option is to reinforce the floor support under the location where you would build a RMH. That is not very difficult or costly, though you will want to stay with a smaller/lighter stove.
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    Well, I don't have as detailed an order on my version of the list, but it may be of some help. I wanted a version for Ukrainian newbies, so I added in a couple of beginning-to-end videos that are heavy on imagery, light on words since most of my audience understands little or no English.

    Here's a link to the page I created. There's also a PDF version to download:

    https://www.roadmaptolife.org/heating-links

    Only a few pages so far and still tweaking (especially for phone displays) but mostly on RMH so far since heat is a desperately high priority:

    https://www.roadmaptolife.org/


    It's been time-consuming and I'm sure it still needs polishing. If anyone has edit suggestions orother good links for my audience, I'd appreciate the help.

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    Briana Great wrote:Hi!  I hope I'm not "crashing" the party, as I am only barely beginning to read about Rocket Mass Heaters.  The problem I have, is I'd love to use Rocket Stove type efficiency as a retrofit for an existing house - one with a foundation that cannot support RMH.  My husband bought me the book without understanding that we cannot utilize any of the designs in our current home.  

    Is there a "small" rocket stove design that can be used to efficiently dump a lot of heat, rapidly, into a "typical" living area, for those of us trying to move from 3 to 4 on the Permies Scale?  =)


    The "pebble style" RMH is promoted by Paul as a lighter, variable version, done for his double wide (with reinforcement) and an option for something like a second floor install.

    Uncle Mud's cottage rocket is also a variant that would be lighter and meant for quick heating of an area using minimal mass. He has used one for his own place and I think there's currently one in the Love Shack, but the one they had in the shop at WL had a few issues, so I suggest going to Mud's site and poking around to see where his progress is on the design...
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    I appreciate info on the pebble style. Thanks. I'd like to run more info about it for the Ukrainians. It looks like a technique that could be especially adaptable for their situation.

    Anyone else have firsthand advice to share?
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    Beau Davidson wrote:
    Kevin, I believe you're right!

    It'll take a while for me to get to that level of detail - if you'd be up for reorganizing a bit, I'd be happy to implement your suggestions!  If not, no worries, we'll get there as we're able!



    I've taken a first pass. What's the best way to get it to you? DM? Shared google doc?
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    Kevin Harbin wrote:

    Beau Davidson wrote:
    Kevin, I believe you're right!

    It'll take a while for me to get to that level of detail - if you'd be up for reorganizing a bit, I'd be happy to implement your suggestions!  If not, no worries, we'll get there as we're able!



    I've taken a first pass. What's the best way to get it to you? DM? Shared google doc?



    Cool, thank you! I'd say just post it here, and we can crowdsource the editorial process.
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    What is it?
  • Video
  • Audio
  • Read

  • Get Started!
  • Video
  • Read
  • Plans
  • Parts
    • rocketheater.com  Site for theLiberator, a UHL-certified, code-ready, pre-manufacture rocket stove.
    • dragonheaters.com The Dragon Heaters company in Houston TX produces kits for 6" and 8" RMH from Peter Van Den Berg's Refractory J Tube design to masonry heater code standards.
    • dragontechrmh.com Thomas Rubino's web site for rocket heater parts
    • rocketheatergamera.wordpress.com   the Gamera, a European manufactured rocket stove from Bulgaria.

    Ohh, That’s Pretty
  • permies.com/w/beautiful-rocket-mass-heaters


  • Ready for More?
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    I found out about this hybrid (regular stove with an added heat riser) which helped these people to get more heat AND stop cold air getting in when it is off.

    Do & be different farmily
    https://youtu.be/efHNHebH8HQ

    I'd like to add this to my regular recent suposedly energy efficient stove and compare. Seems like something I could try out and experiment with. I am a noob in rmh. I am wondering if I can make the heat riser smaller? I haven't measured the height, but I don't think I can fit a big barrel. Maybe I can make the chimney go lower and back up behind the stove?

    I  believe this little experiement  could help building simple addon to a regular stove.
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    Hi Jordan;
    You might like checking out Matt Walkers RMH  it uses a riserless design that can fit in any room. It uses no barrel at all.
    Here is his site   https://walkerstoves.com/index.html
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    thomas rubino wrote:Hi Jordan;
    You might like checking out Matt Walkers RMH  it uses a riserless design that can fit in any room. It uses no barrel at all.
    Here is his site   https://walkerstoves.com/index.html



    Interesting!

    Why it doesn't need a riser? Is it because of the air intake that is being heated instead of releasing colder air? And since it is a heated air intake, would using colder air make it less efficient (on the contrary to other kind of stove)?

    ___

    As for the  collection of resources on RMH, I believe putting all the files together (videos and text) and sorting them into some simple categories (this shouldn't be too elaborated, just something that make sens for now with what we have) would be the a good start instead of going straight to writing pages on a wiki website to explain everything in detail. The reason is that it is going to take time to have people writing these pages. So by putting files together and sorting them in a way that is useful would be easier and it would be helpful to then create a wiki with it.
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    Hey Jordan;
    Matt's design can be seen on his website.  The gasses make a 180 degree turn and then pass thru a port similar to a batch box port before starting to rise.
    When built using CFB and utilizing an RA330 liner his stoves take right off.
    If built using heavy firebrick they take longer to start drafting properly but then will hold heat longer.

    His stove uses the same primary air intake and a secondary air tube the same as a Peter Berg batch box.
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    thomas rubino wrote:Hey Jordan;
    Matt's design can be seen on his website.  The gasses make a 180 degree turn and then pass thru a port similar to a batch box port before starting to rise.
    When built using CFB and utilizing an RA330 liner his stoves take right off.
    If built using heavy firebrick they take longer to start drafting properly but then will hold heat longer.

    His stove uses the same primary air intake and a secondary air tube the same as a Peter Berg batch box.



    Interesting, I don't know enough about RMH to understand exactly everything you've mentioned. I need to check out the ressources here.
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    new fun video from th free heat movie:



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    I think i have this page now set up with this shortcut


          permies.com/rmh



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    paul wheaton wrote:I think i have this page now set up with this shortcut


          permies.com/rmh





    Awesome! The url is going to make this super easy to remember and share.

    I actually meant like a downloadable folder with category folder, but I didn't notice there's also paid content in there, so it doesn't make as much sens.
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    HELP! I am interested in making an RMH, however I can't find where to get the firebrick.  No matter how I frame the question, I literally get EVERY brick under the sun.
    Where oh where can I source Firebrick??
    Thank you for any help that may find its way to me.
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    Tamarlane Ivey wrote:HELP! I am interested in making an RMH, however I can't find where to get the firebrick.  No matter how I frame the question, I literally get EVERY brick under the sun.
    Where oh where can I source Firebrick??
    Thank you for any help that may find its way to me.



    https://amzn.to/4aT2DMJ

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    paul wheaton wrote:

    Tamarlane Ivey wrote:HELP! I am interested in making an RMH, however I can't find where to get the firebrick.  No matter how I frame the question, I literally get EVERY brick under the sun.
    Where oh where can I source Firebrick??
    Thank you for any help that may find its way to me.



    https://amzn.to/4aT2DMJ


    Normally i give Amazon cred for having the most comprehensive consumer review system out there, but i don't think it is trustworthy for this item. The vast majority of purchasers are going to be homeowners following directions on how to repair their wood stove, who have never seen a firebrick before in their life. I bought a six pack like that from a big box home store last summer when on sale for $18. They are chintzy compared to the ones i got from a landscape store that was selling off of a pallet of them, or anything I've seen at Wheaton labs. They feel light and had chips out of the edges coming out of an undamaged box. Do we know of any permies that have bought those particular bricks and can vouch for them?
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    Firebrick is not all created equal.
    I noticed these are  rated to 2200F
    They are a vermiculite product.
    Last but not least, they are splits not full bricks.

    Check here https://refwest.com/browseproducts/CLIPPER-DP-9--64mm-Straight.HTML
    Or here https://www.mutualmaterials.com/where-to-buy/
    I pay $2.40 per brick for 2500F full-size bricks at Mutual Materials
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    thomas rubino wrote:Firebrick is not all created equal.
    I noticed these are  rated to 2200F
    They are a vermiculite product.
    Last but not least, they are splits not full bricks.

    Check here https://refwest.com/browseproducts/CLIPPER-DP-9--64mm-Straight.HTML
    Or here https://www.mutualmaterials.com/where-to-buy/
    I pay $2.40 per brick for 2500F full-size bricks at Mutual Materials



    I thought RMH needed 2900F rated bricks?

    Anyway, if anyone knows where to find properly rated bricks in Canada, please reply here. I sure haven't made extensive research but I can say they are not easy to find around here.
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    Tamarlane Ivey wrote:HELP! I am interested in making an RMH, however I can't find where to get the firebrick.  No matter how I frame the question, I literally get EVERY brick under the sun.
    Where oh where can I source Firebrick??
    Thank you for any help that may find its way to me.



    I found this on the web a while back when I was searching for local sources for firebrick.  https://www.brickwoodovens.com/pages/locator

    I believe it's a company that sells plans for a pizza oven or something, but they have put together a list of sources based on location where one can get firebricks.  In general landscape supply companies and masonry suppliers often sell them for the lowest cost per brick.  Refractory supply companies will tend to cost more for the same thing, but probably also have some higher grade/temp options.

    When I built my RMH I got the hard firebrick from a brick supplier at about half the cost of the same thing from the refractory dealer.  However, I did need to go to the refractory place to get the soft, insulating firebricks I used as well as the ceramic fiberboard.

    Anyway, if you try the link above you can type in your location and how far you are willing to travel and it should give you names and links to various suppliers.  This doesn't mean all suppliers can help you though.  I was excited to see there was a landscape supply company about 5 miles away that had firebrick.  Yay!  Then looking further I discovered this company won't sell retail only wholesale to those certified as landscapers.  Boo.  
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    Jordan Beaupré wrote:
    Anyway, if anyone knows where to find properly rated bricks in Canada, please reply here. I sure haven't made extensive research but I can say they are not easy to find around here.



    Jordan, it looks like the link I gave in the above post works for identifying Canadian suppliers too!

    https://www.brickwoodovens.com/pages/locator
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    Jordan, finding good quality fire brick can be difficult.

    Pottery Supply stores will stock insulating fire brick. Many foundry suppliers will stock hard hi temp bricks. Sometimes farrier supply stores also stock firebrick.  I suggest that you do an internet search for these businesses near you.

    John
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    Hey everyone!
    This is a good bunch of info.
    What I'm really after though, is  examples or discussion of RMHs used for infloor heating. I don't mean heating water to circulate in a conventional infloor tubing system. I mean running the hot gasses directly through an earth floor of some form. I've so far managed to find one post here mentioning various ancient methods from the Romans to the Koreans. BUT there is not much mention of modern interpretations. I would think making use of arguably the most massive part of a house to store heat would be something people would be talking about and at least experimenting. If you know who's doing, talking, or experimenting with this method please point me in the right direction. Thanks permies!!
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