The rocket mass heater. The cheapest home heating system. The most efficient home heating system.

Рет қаралды 71,949

Жыл бұрын

This video introduces our rocket mass heater.
Imagine a sofa that turns sticks into cash. Sounds great, yes? This is even better. This eats sticks and cancels your heating bill.
Rocket mass heaters are the most effective heating systems available.
They're more efficient than any conventional heating system, including heat pumps.
They never wear out.
They require no power.
They're carbon neutral, even carbon negative.
They are the ultimate heating system for anyone wanting to live sustainably, anyone wanting to heat inexpensively, or anyone just wanting to work less.
We've had this heater roughly a year, and it's become the beating, roaring heart of our home.
The book (you definitely need this to build a heater)
The Rocket Mass Heater Builder's Guide Complete Step-by-Step Construction, Maintenance and Troubleshooting
Erica Wisner, Ernie Wisner
ISBN 9780865718234
Video affiliate links. Please remember, you don't need these to build your own heater (but they're definitely useful)
Physical DVDs: permies.com/wi...
Streaming video: permies.com/wi...
Downloadable video: permies.com/wi...
Commercially available rocket heaters.
Europe: rocketheaterga...
US: rocketheater.com/
Come and stay with us! caithnesscampi...
If you want to support our project, and the making of more videos, we have a Paypal account.
www.paypal.com/paypalme/cairnofdunn
Or, alternatively, if you'd like to support us on an ongoing basis / cairn_of_dunn_croft
Follow us on Instagram / cairnofdunncroft_

Пікірлер: 181

@danam.8709 Жыл бұрын

I've promoted and built Rocket Mass Heaters and stoves for over 29 years I am only sorry it took an upending of the world to make people realize the value of them. Thank you for keeping these in the forefront of people's minds in these stress filled times.

@CairnOfDunnCroftPermaculture Жыл бұрын

I have several planned, they're amazing.

@TheKlink Жыл бұрын

I was just showing this vid to someone and just wanted to comment: i'm fine with affiliate links and you making money. the world needs good people making money!.

@CairnOfDunnCroftPermaculture Жыл бұрын

Thanks! I'll always be wary of that though. I'm not being critical of anyone doing a lot of affiliate links, we all need to make a living, but part of what we're trying to achieve is demonstrate ethical living. I just prefer to be a little cautious, when I'm benefitting from an endorsement.

@2509zg99 Жыл бұрын

Seeing your videos I discover that to "sell" an idea, one does not have to be a pushy, annoying, noisy salesman. No, it can be done more effectively with such a smooth, gentle, relaxing and pleasant approach. Thanks for sharing your experience with this brilliant invention.

@CairnOfDunnCroftPermaculture Жыл бұрын

Thank you.

@slax4884 Жыл бұрын

So glad this got popular on reddit, this was very very interesting. Thanks for doing this

@CairnOfDunnCroftPermaculture Жыл бұрын

Ah, that would explain the sudden increase in views!

@DL-dv4jk Жыл бұрын

I’ve spent a little time in a home with one of these and I can attest to its awesomeness! As someone who chills easily being able to literally soak up the heat felt incredible. This video was the clearest overview of a rocket mass heater I’ve ever encountered. So helpful, thank you! Hopefully it’s something we’ll be hearing a lot more about in the future. I’d be a fan of more living rooms having warming sofas :)

@CairnOfDunnCroftPermaculture Жыл бұрын

Thanks!

@igavinwood Жыл бұрын

I'm chuffed that you have covered this subject. I'll be following up with the book. Good info and thanks for sharing.

@CairnOfDunnCroftPermaculture Жыл бұрын

Thank you.

@cbass2755 Жыл бұрын

I’ve been so courteous about that stone heater. Thank you so much for the explanation. I’ll never have one, but believe me, I’ll pass this on to friends and the young home buying. Much appreciated…..

@CairnOfDunnCroftPermaculture Жыл бұрын

Thank you.

@highdownmartin Жыл бұрын

I have an efficient wood stove in a 30s semi ( wood warm 6 kw). It’s a bloody good stove and I installed it 15 years ago. But the entire front garden is arranged around wood storage I really wish it was 20’ longer. That’s an eight month fire everyday and overnight supply. Currently I’m thinking about waking up to find my wood stolen, or wood being such a resource as to be harder to get/ more expensive. I buy mine as a big pile from a sawmill and have been dealing with em for twenty years now. I saw it up a bit at the yard, chop it into 16” length at home and stack and split it. But I run on annual turnover, I have no rotational space so I get in April ready for October and it’s split and dry by then. Reducing my woodpile and increasing my efficiency is something I’m going to seriously rethink. Your vid has rekindled my interest in RMH. I will watch your others with renewed interest. Cheers.

@CairnOfDunnCroftPermaculture Жыл бұрын

Glad you found it useful. I'd never be without a RMH now.

@SonofTheMorningStar666 Жыл бұрын

I watched all the episodes back to back. 👍

@CairnOfDunnCroftPermaculture Жыл бұрын

Fantastic!

@StopClimateEngineering Жыл бұрын

I'm building a house this summer. Likely going to use wool insulation, be off grid, and I'm now sold on using a rocket mass heaters. It's crazy how much more efficient everything could be if we weren't stuck in our old ways.

@markthomasson5077 2 ай бұрын

Sheep totally mess up the environment

@cbass2755 Жыл бұрын

I’d be so happy sitting or sleeping on that thing! This skinny older women (no fat..really) is cold all the time in winter. I used to be comfortable at 70 on really cold days here in Michigan. That will stop of course. But I’m down to 68 and have hung hooks in the walkways of my home on certain rooms to creat a micro-environment. I’ve got Mr Buddy, my fireplace (hole in wall) but I do burn, and electric blankets. Snow pants I can wear comfortably moving about in my home. I’m trying…oh…and like you’ve mentioned, heat the body not the room. I got those hand and feet warmers and body stickers too for warmth. I have a Oil Radiator I bought off Amazon and it’s pretty nice! I’m pleased. I’m trying Cairn, I’m trying…..Thank you for all the recommendations you’ve provided. I like that lizard heater too you showed. I think I’m going on the hunt for one of those. Gods Blessings on you and yours dear. We all need each other, we’re all human beings…even the bad. I pray all come to Jesus, I really do. Then we’ll come together and fight as one against the evil in this world. Even if you don’t believe, we all must come together as one to survive. Anyways…just my two cents for what’s it worth. Take care.

@CairnOfDunnCroftPermaculture Жыл бұрын

Thank you.

@IoanCristianDarau 10 ай бұрын

This is the system our ancestors over here in Romania were using to heat their houses, their beds and to also cook on them. The romanian term is "lejancă". Back to basics it's always a win!

@CairnOfDunnCroftPermaculture 10 ай бұрын

Very similar yes.

@CallMeToph Жыл бұрын

I just finished all of your rocket mass heater videos. I really appreciated and enjoyed them. Thank you for sharing your experience.

@CairnOfDunnCroftPermaculture Жыл бұрын

Thanks for your kind words, they're appreciated!

@ladyj.klmnop Жыл бұрын

Have to go find the book. Wanting to build just the stove unit and connect to existing fireplace. Appreciate you taking the time to explain your build experience. Winters in the northern Ohio Valley, US can be ...brr. Needing to supplement existing heating system and also having peace of mind if that not available. Looking forward to your up coming videos!

@CairnOfDunnCroftPermaculture Жыл бұрын

Just the core and bell is a pretty simple build, and you can stack mass like stone or masonry around the bell will really help store some heat.

@karate4348 3 ай бұрын

Inspirational... Beautiful heater couch! Thankyou lovely man.

@CairnOfDunnCroftPermaculture 3 ай бұрын

Thank you!

@Nachos_with_a_slice_of_lime 6 ай бұрын

I finally got the book!! Thank you for your video.❤

@CairnOfDunnCroftPermaculture 6 ай бұрын

Thanks!

@Nachos_with_a_slice_of_lime 6 ай бұрын

@@CairnOfDunnCroftPermaculture it is a great read. I think I can build one too. (I’m in the NorthEast Kingdom. (VT)

@bungabungaPartae Жыл бұрын

Your voice is pure ASMR…….

@CairnOfDunnCroftPermaculture Жыл бұрын

Thank you!

@rubberbiscuit99 Жыл бұрын

Agree. Upon first hearing his voice, I thought "voice actor" and "He could likely make a fortune with that voice." But then he'd have to go to Hollywood or build a dang sound studio. Goodbye Yellow Brick Road started playing in my head. A complete narrative.

@MiddleEastMilli Жыл бұрын

This was wonderful! You are a very good teacher. Thank you for sharing your gifts. :)

@CairnOfDunnCroftPermaculture Жыл бұрын

Thank you!

@pt2575 Жыл бұрын

You're a genius! Thank you for working so hard to help others.

@CairnOfDunnCroftPermaculture Жыл бұрын

Wow, thank you!

@CyberLord14 Жыл бұрын

In Eastern Europe, we use masonry stoves to achieve the same result. Russians and Finns went to a whole other level when it comes to masonry stoves. I guess cold and limited resources does that to you.

@CairnOfDunnCroftPermaculture Жыл бұрын

Apparently various heads of state ran competitions to innovate new heating technologies.

@CyberLord14 Жыл бұрын

@@CairnOfDunnCroftPermaculture Hahaha. I know that in the communist times they did research wood based heating systems (Google Kuznetsov stove). You could even go to vocational school and learn how to make them. Here in Transylvania, we use a type of terracotta stove (tiled stove) that is very popular in Central Europe, but the Russians use a brick stove that gives better results. However, it takes a lot of space. Anyhow, enough stove talk. Your video about the vacuum sealing of jars was mind-blowing. I will do that from now onwards! Thank you from my heart !

@CairnOfDunnCroftPermaculture Жыл бұрын

@@CyberLord14 thank you

@mythoughts1................1 Жыл бұрын

This is a fantastic way to complete the course of videos that you have created. Well done!!! This is very helpful.

@CairnOfDunnCroftPermaculture Жыл бұрын

Thanks a lot!

@GSDXephyr Жыл бұрын

awesome, well done. these need more attention!

@cbass2755 Жыл бұрын

God Bless you dear….✝️

@CairnOfDunnCroftPermaculture Жыл бұрын

Thank you

@gideonammerman4671 Жыл бұрын

Thank you for the great video. I just recently heard of these types of heater and with heating oil prices going through the roof its a very enticing thought. I found it very comical when u mentioned about ur old drafty house because our home was built in 1907. We've done a lot of work it, but it definitely still pulls a lot of drafts. So I was glad to hear ur comment on that. Thanks again PS that book is ordered and on its way.

@CairnOfDunnCroftPermaculture Жыл бұрын

Glad it was helpful!

@paulbucklebuckle4921 Жыл бұрын

Liked, commented and subscribed....

@CairnOfDunnCroftPermaculture Жыл бұрын

Thanks!

@craigsymington5401 Жыл бұрын

Well done! I have a fascination for the rocket burning technology, your build and presentation is superb. I hope to get to Scotland eventually, since I'm half Scott via South Africa.

@CairnOfDunnCroftPermaculture Жыл бұрын

Thank you! Genuinely appreciated.

@putheflamesoutyahoo1503 Жыл бұрын

I experimented outside with a few barberic rockets stoves , cool, thought no way in the house, lol. Got cold, looked at a file cabinet drawer and started making a burn chamber with firebricks. That winter the old lill stack of wood from old stove 10 yrs back was enough for the whole winter...that wood wood have been enough for less than a month with the old stove and I was cooking having tea on the barrel everyday. Yup I sucked up exhaust outside right in my mouth

@gedreillyhomestead6926 Жыл бұрын

There is a camping rocket stove that generates enough power to charge a phone, so - stick powered! 👍 😎

@CairnOfDunnCroftPermaculture Жыл бұрын

Yep, amazing technology.

@justinw1765 Жыл бұрын

Very nice video and run down of these. Thank you. Wish I could make one in this house, but I know my spouse would veto it. I do want to build a rocket stove outside and pipe it in through a window though. Obviously wouldn't be a "mass heater" in that case. One of the ideas I have is to use primarily vacuum insulated glass jars (the 32 oz, wide mouth canning/mason jars) as the main insulation and part of the structure but combined with a more insulated cob (instead of using sand, I would use fumed silica and diatamaceous earth to up the insulation beyond just using straw). The cob is to protect the glass from too fast thermal expansion and contraction and to seal up and steady the structure (and to add insulation to areas not covered by the glass jars). With most of the structure insulated by vacuum insulation, there should be a very efficient burn, and you can direct the heat more efficiently (the pipes will have to be insulated too until it comes inside). Things would be a lot easier if I could just build the dang thing inside though.

@jacksmith4266 Жыл бұрын

What might happen if you show this video to your spouse and have a conversation about it

@justinw1765 Жыл бұрын

@@jacksmith4266 Lol, she has already vetoed the outside idea too. She does have a point though, that legally, it has to be a certain distance away from the main property, which would make it far less practical and more expensive to do. (But her real reasoning is more aesthetics). For the inside: Part of problem is that we spent a good chunk of change already on installing a more conventional wood stove (and which has been somewhat of a hassle, as the guy who did it, didn't do the best job and our roof leaked until recently when we re-roofed and had a rubber layer put down first on this section of the house because the pitch is lower than usual. [It was an added sunroom]).

@ricos1497 Жыл бұрын

I'm disappointed to be living in a modern, well insulated house now! I've been thinking of building new for a while now and the security of supply that the rmh provides is something I'm really keen on. However, it's unlikely that I'd ever get the planning permission to install (in the UK). I've currently got oil in my existing house and I don't trust that one day soon I won't be able to refill the tank. By that point, the blackouts will likely be upon us too, so no heat pump option!

@CairnOfDunnCroftPermaculture Жыл бұрын

Personally, I'd get the most basic, cheap wood burner available, get it HETAS registered, then take it out and install a mass heater.

@scottegner306 Жыл бұрын

Thanks for this. Great video! Having owned a masonry stove in a previous property I can say they are hungry beasts although the heat from them is wonderful. I have bought the book and would love to install one in our current property. I’m just wondering about building regs..

@CairnOfDunnCroftPermaculture Жыл бұрын

I suspect quite a few are quietly installed in place of a wood burner, without permission.

@dorcassinclair Жыл бұрын

Great to see the finished article! Have you thought about doing it as a business, building them for other people? We swear by our wood stove which is so much better than our previous heat sources but it still uses a lot of wood and only heats the one room. :)

@CairnOfDunnCroftPermaculture Жыл бұрын

I'm convinced there's a huge opportunity for someone to do it. Apparently a small team can build one in a few days! The issue is tooling. The right kind of mixer costs a few thousand, so whoever did it would need quite a few orders to offset the cost.

@putheflamesoutyahoo1503 Жыл бұрын

Wish more made these. I showed a pic/name of one years ago to a welder shop. They said it was a Mercedes company. It looked like a end table with exhaust out the side.

@karladrian8640 Жыл бұрын

Well explained and to the point,good video.

@CairnOfDunnCroftPermaculture Жыл бұрын

Thank you!

@AlyAlyAlyAlyAly Жыл бұрын

I binge watched your build series while in my unheated van last night :D I'd never heard of these until I saw them on your channel. Amazing, I'm now hoping to build one when/if I finally get my plot of land! (With the book 😅)

@CairnOfDunnCroftPermaculture Жыл бұрын

Fantastic! It's a technology I wish more people knew about.

@MalteseMafia Жыл бұрын

👍 Thanks for sharing.

@CairnOfDunnCroftPermaculture Жыл бұрын

Thank you too

@Yomanchamcru Жыл бұрын

Excellent stuff, I'm glad it's still working so well for you 🤗 Also pleased you mentioned other applications for RMH technology for upcoming projects since that was going to be my question: what else are you gonna do with it?!

@CairnOfDunnCroftPermaculture Жыл бұрын

In the next year I have a rocket retrofit to an aga stove, and a rocket water heater for the customer shower. Beyond that, I'm looking at a rocket forge/kiln, and I think it would be useful to incorporate a hot tub water heater into that too. It's an amazing technology.

@Yomanchamcru Жыл бұрын

@@CairnOfDunnCroftPermaculture Wow, I'll look forward to seeing how all that looks 🤩

@startrack3744 10 ай бұрын

Cake is always good 👍

@CairnOfDunnCroftPermaculture 10 ай бұрын

Indeed!

@Pwecko Жыл бұрын

Excellent video.

@CairnOfDunnCroftPermaculture Жыл бұрын

Thanks!

@9bang88 Жыл бұрын

Simply brilliant.

@CairnOfDunnCroftPermaculture Жыл бұрын

Thanks!

@audiokees4045 Жыл бұрын

Unfortunaly in the Netherlands the social house rent organisation do forbid wood stoves, even de clean ones, while justice organisations allow them causing a discrimination between people in own houses and private renters. I do think about build one in the greenhouse and be there in the winter. this is something she can do nothing about. Reason for this policy is to get green and stop also gas and all electric with sunpanels.

@swimster50 Жыл бұрын

Is it HETAS compliant? Do you have a carbon monoxide alarm in the room just in case!

@CairnOfDunnCroftPermaculture Жыл бұрын

I've tested it with a CO meter. It tests at zero. Which is more than could be said for the previous open fire or any gas cooker. Because of the way it runs, any time I open it air is sucked through the system. Even when it's not burning. I can literally partially open one of the cleanout ports while it's running, and it sucks air. It's far safer than any typical wood burner.

@giselemartin7853 6 ай бұрын

Instead of a barrel which has to be replaced every few years as you said, could you not use an heavy steel wood furnace insert?? I live in Cape Breton Nova Scotia Canada and it gets pretty cold up here as well! Thank ou for sharing this video! I have been thinking about having one of these built for quite a few years but the cost was pretty high... Maybe now I can actually afford it!

@CairnOfDunnCroftPermaculture 6 ай бұрын

A lot of people use all kinds of fancy steel for the drum. Personally I'm not too worried about it, an oil drum lasts decades.

@benholler1389 Жыл бұрын

What type of wood stove are you comparing your wood useage to? How much wood are you using to heat what square footage in what climate?

@CairnOfDunnCroftPermaculture Жыл бұрын

I'm comparing it to the coal and wood fired back boiler we had installed previously. I've not measured it by season, I've measured it on a month by month basis compared to the number of bags of wood we buy monthly. I don't know the square footage, but I live in a cool temperate climate, in the highlands of Scotland.

@benholler1389 Жыл бұрын

@@CairnOfDunnCroftPermaculture ok so a wood coal combo unit of any sort is going to be incredibly inefficient for burning wood. I have no idea what you were using but most of the older combo units here were at best running at 30% but a modern woodstove will be in the 70% to 80% range here. Even old dedicated wood stoves were in the range of 50%. So I don't think it's very fair to say that you are saving that much wood when compared to a woodstove when infact you weren't using a woodstove at all.

@mashpotato832 Жыл бұрын

I'm curious about TCO, maintenance costs, risks, etc.

@CairnOfDunnCroftPermaculture Жыл бұрын

It cost under £1000 to build, including the concrete foundation. Maintenance is very low. Scooping a couple of handfuls of ash out of the burn tunnel once a week or so. A couple of hours, once a year, to vacuum ash out of the pipes. I've not come across any risks with it. It's safer than any heating system I've ever used.

@clivefrancis3546 Жыл бұрын

Do you have to sweep the flue?

@CairnOfDunnCroftPermaculture Жыл бұрын

It gets vacuumed once a year to remove ash.

@wobdeehomestead1464 8 ай бұрын

Yeah they’re pretty awesome but try to get your insurance co on board

@frostyfrances4700 7 ай бұрын

Can wood pellets work well in a rocket stove? That would be my major fuel source if I were to buy a Liberator. Would it present surprise complications?

@CairnOfDunnCroftPermaculture 7 ай бұрын

As far as I know, the liberator has an attachment specifically for burning pellets.

@nowherefast- 6 ай бұрын

awesome deep dive. I am sold. Going to build one in my 25 ft yurt. How big is your house?

@CairnOfDunnCroftPermaculture 6 ай бұрын

Fairly modest, it's a single floor cottage. But a mass heater will heat a yurt beautifully.

@relaxingsounds3952 Жыл бұрын

I probably missed it in the series but are the circular capped off pipe sections on the front left and 2 along the far side to allow you to take them off and sweep inside? Great series BTW!

@CairnOfDunnCroftPermaculture Жыл бұрын

Thanks! Yep, you're right. They're clean out ports. A lot of people cover them with a loose rock that can pop off for servicing, but I like the look of them.

@benfordslaw5105 Жыл бұрын

I would love to set up something like this but unfortunately I live in a 'smoke free' area. Government regulations forced me to use a less efficient defra approved stove.

@CairnOfDunnCroftPermaculture Жыл бұрын

I suspect a lot of people just switch to a mass heater anyway, and just keep quiet about it.

@stevenhines5550 Ай бұрын

Can you tell me: Is there any reason one couldn't route the heating pipe under a floor for a radiant system?

@CairnOfDunnCroftPermaculture 21 күн бұрын

It's certainly been done, yes. It works very well.

@lazyj4732 Жыл бұрын

Do you have to declare it to your house insurance (UK)? Thanks.

@CairnOfDunnCroftPermaculture Жыл бұрын

It might be peculiar to our provider, but they've never asked what we do for heat.

@ioda006 7 ай бұрын

How do you cut the smaller pieces of wood? I have a ton of it around my property, but a chainsaw isn't a great tool for a lot of the smaller pieces.

@CairnOfDunnCroftPermaculture 6 ай бұрын

I tend to use loppers.

@ravenrock541 5 ай бұрын

I'm extremely curious to know what you coated the barrel with to withstand the heat.

@CairnOfDunnCroftPermaculture 5 ай бұрын

It's just a little cooking oil.

@ravenrock541 5 ай бұрын

@@CairnOfDunnCroftPermaculture No kidding? Doesn't your barrel burn it off?

@herenow2895 Жыл бұрын

Very interesting. It would be good to have a bit more detailed info on the mechanics of the design and how it generates the fuel efficiency. Is it smokey into the flue gets warm and creates a draw ? How do you get it to draw from the off ?

@CairnOfDunnCroftPermaculture Жыл бұрын

The chimney is above the highest part of the roof. This creates a lot of draw. In less ideal situations, some people need to prime the riser when they light it for the first time in the heating season, but mine's never needed it. There can be a small amount of smoke until it's up to temperature and burning cleanly, perhaps a few minutes. / The efficiency is from a few factors. It burns the fuel completely. No fuel is wasted as smoke, it's burned and produces heat. Secondly, it mainly produces radiant and conductive heat. This is much more efficient than convective heat, heating the air essentially, which is what most heating systems use. Third, because it burns the fuel so completely, there's no potential for dangerous creosote build up in the chimney. This allows for extracting a lot more heat from the gases. In a typical woodstove, a lot of the heat goes straight up the chimney. In a mass heater, most of that heat is stored in the mass, which slowly radiates the heat over the next few days.

@herenow2895 Жыл бұрын

@@CairnOfDunnCroftPermaculture - Great, thanks for taking the time to explain that . Cheers.

@pakkabharuchi702 Жыл бұрын

CAN SOMEONE PLEASE HELP ME AND INSTALL ONE OF THESE HEATERS. THANKYOU.

@TheKlink Жыл бұрын

won't the core need replacing? fire bricks fail after a while. often wondered about whole house heating. figured you could just keep adding mass-loops to the system until someone mentioned air drag to me. spose it should be ok so long the exhaust is strong enough to continue being a thermo-syphon, right?

@CairnOfDunnCroftPermaculture Жыл бұрын

I suppose eventually it's a possibility, but even replacing the core isn't a huge job. I could add a much larger bench to this one and still get excellent draw.

@luisj.serrano5821 11 ай бұрын

would this work using a wall as mass instead of a bench?

@CairnOfDunnCroftPermaculture 11 ай бұрын

Absolutely yes! If I wasn't retrofitting the heater into an existing building, I'd have used a cob wall in a central position that's a part of several rooms.

@peigryan3355 Жыл бұрын

Could you explaim a bit more about How the Barraleis filled. Or is it empty?

@CairnOfDunnCroftPermaculture Жыл бұрын

The barrel is empty. The hot gases heat the barrel, which radiates heat to the room. Then the gases flow through the pipe through the bench, heating it.

@greenwood4020 15 күн бұрын

Watch his build video

@stuffoflardohfortheloveof Жыл бұрын

I've just discovered this vid by accident. Been very interested in RMHeaters for a while but can't get off my backside to actually try and build one. Your vid has me thinking again. I have a load of questions but am going to watch your complete video series in the hope of (obviously) learning something but also to hopefully get answers to my queries. I would like to ask you one question here though.....We have a large woodburner and so I understand about it needing an air supply to replace what it uses in combustion etc. The biggest problem related to that is that it causes drafts due to the large amount of air movement. I imagine that a RMH is exactly the same BUT could the air input be piped externally to save it dragging cold air through the house?.....or is it not that noticeable? Many thanks for the vid etc 👍🙂

@CairnOfDunnCroftPermaculture Жыл бұрын

Glad you're finding it useful. I know people have run experiments with external air feeds. Apparently it's just not necessary. To be honest that sounds right to me, when it's running the last thing you'll worry about is a draft.

@stuffoflardohfortheloveof Жыл бұрын

Hi, thanks for reply....I've just watched all of the build vids, very interesting. Well done! I've got to have a good think about this. In regard to my 'draft' question it's just that with the woodburner if you're sat with your back to the rest of the house (large lounge) you feel the cold air coming passed you, especially at lower leg level......anyway, I need to find some clay soil! 😂

@benwilkins2998 10 ай бұрын

I don’t understand how you don’t need rads. How does it heat separate rooms?

@CairnOfDunnCroftPermaculture 10 ай бұрын

I open the connecting door and the heat evens out.

@benwilkins2998 10 ай бұрын

@@CairnOfDunnCroftPermaculture so it wouldn’t work for the average home with multiple rooms? I am thinking some sort of heat distribution system would be needed, if it were possible at all.

@T0MME0 Жыл бұрын

Hello. What is the measurement on the depth of the couch? It seems pretty deep, are you happy with the dimension this way? Thanks!

@CairnOfDunnCroftPermaculture Жыл бұрын

This one is 43 inches, around 1.1 metres. It's wider than most mass heater benches, wider than it needs to be. I built it that way so I can turn it into a huge bed when I need to. I'm planning on having cushion pads made to size, and getting an extra one. This will go behind the back of the couch cushions, when it's in couch mode, but be added to the front of the bench on a table made to be the right height, to convert it into a massive heated bed. I'm pleased with it.

@T0MME0 Жыл бұрын

@@CairnOfDunnCroftPermaculture Good stuff, thank you!

@bernadettefern Жыл бұрын

Is there a type of pipeless, smokeless, efficient wood heater that does not smoke?

@CairnOfDunnCroftPermaculture Жыл бұрын

Every wood burner needs a flue.

@craigsymington5401 Жыл бұрын

These don't smoke but for a few minutes in the startup and at the end, but the CO2 and H2O has to go out, and you need the draw of fresh air into the fire for it to work. There are really high tech Scandinavian pellet wood boilers that need electricity and air and only have a small exhaust, but these are expensive.

@stuffoflardohfortheloveof Жыл бұрын

Hi, I've been thinking about this since watching everything yesterday. Could I ask you for your thoughts on this please.....our bungalow's floor level is at ground level at the front (ie normal 150mm step up into house) but the rear, including the bedroom and lounge, is over 1.5m above the lower rear garden. I don't think that she who must be obeyed would allow me to build a RMH with an integrated 'sofa' (I'd love to btw) but what do you think about theoretically sinking as much of it as possible into our solid floor and so use the long flue pipes as something like underfloor heating? I'd add a load of insulation to every face apart from the top (our floor). I've read a lot about RMHs but having not ever experienced the heat given off by them, would it be detrimental to its efficiency if it was in the floor?

@CairnOfDunnCroftPermaculture Жыл бұрын

It's definitely been done. I'd suggest a look through the RMH forums, I'd be amazed if there wasn't quite a lot of data on that style. It might take some digging it though.

@MrOrbitzHD Жыл бұрын

What about safety? I could leave my central heating on all night, could I do the same with this?

@CairnOfDunnCroftPermaculture Жыл бұрын

The beauty of the mass heater is you don't have to. I run it an hour or so a day, and the mass radiates heat all day and night. From a safety perspective, I'd suggest having nothing at all running while you sleep is even safer.

@MrOrbitzHD Жыл бұрын

@@CairnOfDunnCroftPermaculture thanks for the reply.

@CairnOfDunnCroftPermaculture Жыл бұрын

@@MrOrbitzHD No worries!

@jaimz33 Жыл бұрын

Could you put the barrel part outside and run the flue part inside then back out? Reason I'm asking is because I rent and landlords are ruled by laws, they sent Heatas out about my multi fuel fire and condemned it for not being in the fireplace to some some rule the self appointed arseholes had made up. Later I found out their "engineer" wasn't qualified and had been fired.

@CairnOfDunnCroftPermaculture Жыл бұрын

I know of people doing it with yurts and so on, so it can definitely be done.

@jaimz33 Жыл бұрын

@@CairnOfDunnCroftPermaculture thanks

@martinottosson6583 Жыл бұрын

I would prefer a big classic masonry heater or a atleast a batch box rocket mass heater instead of the j-style. A masonry heater works the same but you don’t need to feed the fire. Still a really hot and effective burn, but you just load 20 kg:s of wood in once, light it and you’re done for 24 hours.

@CairnOfDunnCroftPermaculture Жыл бұрын

I dump a load of sticks into the fuel feed, put a piece of oily paper in, and light it. Ten minutes later I add another load of wood. When it's burned out I'm done for the day. Maybe 5 kilo of wood, at most. It's really no work or effort at all.

@martinottosson6583 Жыл бұрын

@@CairnOfDunnCroftPermaculture Oh, that’s handy, but it must mean that you don’t have that big need for high watts for heating. Even with the best stoves 5 kg:s of wood only gives you about 15-17 kWh:s. That is something like 0,6 kW:s of heating energy in average per hour if you do that once a day. That’s only enough to keep a small, well insulated room warm in cold winter conditions.

@CairnOfDunnCroftPermaculture Жыл бұрын

@@martinottosson6583 I'm in the far north of Scotland. I live in a badly insulated 1930s house, with gaps around the front door. When the wind blows, the curtain billows inwards. And still, I keep the whole house comfortable on very little wood. The mass heater gets its efficiency by using more of the heat than even the best wood stoves. The gases going up the chimney are warm, not hot. The mass heater releases the heat slowly, as radiant heat. Radiant heat is much more effective than convective heat, and is why it's able to heat the house effectively long after the fire is out. The mass heater cannot be compared to any conventional wood heat, because it heats in a fundamentally different way.

@martinottosson6583 Жыл бұрын

@@CairnOfDunnCroftPermaculture I am well aware of the principle of mass heaters, but it´s even theoretically impossible to get more than 5kWh of energy out of a kg of wood, even if you have a stove or mass heater with 100% efficiency. You might, if you made a absolute perfect burner and balanced that to an absolute perfect dimensioned mass to heat, get 90% of efficiency. If you keep your house warm with 5kg:s of wood for 24 hours, you have used 22,5 kWh of energy as a theorical maximum. Probably a bit less even since 90% is really hard to reach. That is, no matter how you put it or what creates it, not a lot of heat radiant or not. If you get -10 in outside temperature, which is normal where I live (Sweden) there´s just no way near enough. You would have to sleep on the mass to keep warm, basically. A consumption below 50 kWh in -10 C is considered low, I would say. But on the other hand, I think I have to try one myself. It´s not a big investment to atleast get a base heat in the house.

@CairnOfDunnCroftPermaculture Жыл бұрын

@@martinottosson6583 Build one. I promise you'll love it.

@HabitualButtonPusher 10 ай бұрын

Hmmm watching this makes me think of running some copper water line through this into a water tank that could cycle through for hot water or a bath.

@CairnOfDunnCroftPermaculture 10 ай бұрын

That would work, but water heating in closed pipes can be extremely dangerous. I have a rocket stove planned with a water heater though.

@thisguysnewaccount1 Жыл бұрын

How big is the house its heating? Also how many floors?

@CairnOfDunnCroftPermaculture Жыл бұрын

One floor, a three bedroom family home.

@clivefrancis3546 Жыл бұрын

Hi did you get on with eco2022 and building regs for this install?

@CairnOfDunnCroftPermaculture Жыл бұрын

It's not applicable to Scotland.

@clivefrancis3546 Жыл бұрын

@@CairnOfDunnCroftPermaculture you sure about that? eco2022 is a uk wide standard, if installed by a heras certified engineer then no building regs otherwise yes. May also void your house insurance if there was a fire. I really want one but don’t want any legal hassle or void insurance.

@CairnOfDunnCroftPermaculture Жыл бұрын

@@clivefrancis3546 even hetas registered installation isn't compulsory in Scotland.

@markthomasson5077 2 ай бұрын

You didn’t mention Building Standards (Regulations/ Codes for those not in Scotland) As far as I recall from my days as an Architect, this would not be permissible, and probably illegal, and void your insurance. Please set me straight if I am mistaken.

@CairnOfDunnCroftPermaculture 2 ай бұрын

Why are people who are opposed to mass heaters, always so angry?

@markthomasson5077 2 ай бұрын

@@CairnOfDunnCroftPermaculture Who is opposed, and who is angry? I love rocket mass heaters. Regulations are there to protect folk. As you said, a poorly built one is potentially dangerous. It would be difficult, though not impossible, to regulate the design and construction. As combustion fuel as a prime source of heating is likely to become not allowed, I don’t see this happening. This is a real shame, as it is very appropriate in many rural areas. The CO2 it adds is negligible. (Though growing trees, then burying under clay soil to capture the carbon is better

@kristinaginorio1344 Жыл бұрын

A seventy year old woman could manage the firewood easily, it seems.

@CairnOfDunnCroftPermaculture Жыл бұрын

A lot would depend on the individual, I expect. But it's a lot less work than a conventional wood stove.

@robsummerscales1679 Жыл бұрын

8 to 10 ton is a hugely exaggerated amount don't you think?

@CairnOfDunnCroftPermaculture Жыл бұрын

No. No I don't. It's a colossal piece of monolithic masonry. A typical mass heater bench, made in cob, is typically 6 tons. This is significantly bigger.

@274pacific Жыл бұрын

They should build these in Ukraine

@markthomasson5077 2 ай бұрын

Whilst I think these are great, not sure about your claims of efficiency. ( please prove me wrong!) Perhaps over the worst open fire. But a good wood stove is, say 60% efficient. I guess yours is maximum 90%. So some facts to back this up please. How much fuel do you use. Did it replace a wood stove, so you have a comparison. How big and well insulated is your house.

@CairnOfDunnCroftPermaculture 2 ай бұрын

All these challenges of the efficiency of a mass heater I think are because of a misunderstanding. A standard wood stove only heats when it's running. A mass heater heats for days after it's been run, and you have the option of sitting on the mass for conductive warming, which is something you can't do with a conventional stove. Comparing a wood stove with a mass heater isn't a level comparison, they function differently.

@markthomasson5077 2 ай бұрын

@@CairnOfDunnCroftPermaculture point taken. Yes apples and oranges, but both still fruit. It would be good to see an episode giving the fuel use over winter. And details of your house. I run a small wood stove, mainly just for a few hours in the evening. My house is all brick, including internal wall so holds the heat quite well. Insulated cavities and good loft insulation. I burn trimmings from the garden, plus I am trying out wood brickettes, I got a one ton bag for £100, and that will last a winter, supplemented with found wood.

@JoshuaCollins Жыл бұрын

I don't think I've seen anyone try so hard to fill a few minutes. Talk talk talk talk talk and no good info other than buy a book. Props to the hustle I guess

@CairnOfDunnCroftPermaculture Жыл бұрын

Hustle?

@JoshuaCollins Жыл бұрын

@@CairnOfDunnCroftPermaculture yeah you aren't selling anything but clearly you're trying to game the KZfaq algorithm that's what it seems like anyway. Thanks for sharing the information if I wasn't living in a house built in the last 10 years then I'd consider this as an option. Perhaps there'll be a great apocalypse and I can live in the woods and that book would come in handy 👍

@CairnOfDunnCroftPermaculture Жыл бұрын

"Game the youtube algorithm"? As in..... Encourage people to watch? You know that's literally what KZfaq is, right?