FRESH AIR - simple HRV - (Easy Making) 

This video saved me $500

Brilliant! I love this design and am looking forward to copying it. Its weird that all the other videos on the same subject try to overcomplicate things while this design is much easier and seemingly more effective than the other tube or corrugated plastic designs. Will definitly include this when I eventually get around to building a tiny house. It feels so great when you can make something that sells for $1000 for $20.

Foreign levels of out-of-the-box creativity and resourcefulness detected. Temps displayed in Celsius is the final confirmation that you are not American.

I'm all about backyard inventors since I consider myself one. Good on you Jobe. Keep INVENT'IN!!! 👍

that is unexpectedly efficient. having fresh air at aprox. 15 degrees when the average temp is slightly above 15 degrees (inside is 22 and outside is 8) is extremely efficient for that small setup. have you tried decreasing the airflow for the fan that brings air from the outside? If the fans have different speeds you might be able to obtain fresh air with higher temps and avoid condensation by not cooling the hot air from the house below it's dew point. I doubt condensation would happen if the room has fresh air heated and then cooled back to half it's original temperature (because by heating air you decrease it's humidity and by cooling it only to it's original temperature it won't reach it's original dew point) If you take fresh air from the outside at 8 degrees, it's dew point will be lower like 3 degrees, and if you heat that up by bringing it inside it will have the same water vapor in it, which means it's dew point will remain the same even if now it has 22 degrees, and after it gets pulled into the exchanger it will be cooled to 15 degrees like the fresh air that goes the opposite direction. The only reason for it to cause condensation is if you have a water source in the room. Unless you're working out in that room, your breathing alone is never going to raise the dew point from 3 to 15. If the room isn't loosing pressure you could just use a single fan that forces air out, and that would create negative pressure on the other opening that would suck fresh air in at a lower speed that would allow it to maybe heat up a bit more than the average temperature between the room and the outside. Probably the room isn't that airtight and it's probably a bad idea but still worth a try just for the possible 50% energy savings by using a single fan instead of two. Congrats on the build! I wish I'd have the courage to try!

everything i needed to know while being short and positively vibed, thanks!

I think this is out of the box thinking myself!!! More betta than others I've seen regarding foils and simplicity. Jobe well done for a prototype. it could get a little more fancy but simple is sometimes harder to come up with. I'm wondering if it would be more efficient making longer and if use thinner aluminum as in (thick foil). The air in my basement is not great and I do some jewelry work in one room it would be nice to evacuate fumes and save some cash using an exchanger. Georgia gets nice and toasty/cold in winter too. I'll be building a traditional unit much larger later with the corrugated plastic.... think the fancy ones are made of, but this is great!! Thanks for posting this is what RU-vid is all about!!

Very clever ! I am interested whether there is air "leakage" down the length of the folded aluminum since it is not sealed? Thanks for the ideas ,I have a 3D printer which produces odors which need to be vented outside.I think this would be perfect with smaller computer fans since just a small volume of air exchange will solve the problem.I will add a drain since I expect condensation with large differences in Canadian winter temperatures. Thanks again.

Well designed, congrats. Im wondering if you did a smoke test to see if air got recirculated in the locality of the two fans - in other words does the expelling fan draw from the other fan being so close together?

Well done, that´s a rather clever and easy to build solution.

Very nice job! Love simple and creative DIY projects like this. Are you still using the DIY HRV today?

Simple, Smart and Cost Effective, thanks for sharing!

Love the simplicity.

Great design. BTW, can you please tell me what kind of glues you are using on the foam and for mounting the fans? Thanks!

This looks great, have been looking for ideas to make a cheap heat exchanger as I only have one window in my room facing busy street, I have to keep closed to stop noise and privacy but need air not to be cold, all other I have seen very expensive to make, need workshop fancy tools etc. could you please say what material you made the element out of? is it just aluminum foil like you glued on the insides?

Love it, it's basically a large heat sink that you get in a PC. I would add a filter. The type used in breathing machines like CPAP is thin. Also, could this work room to room instead of outside?

this is so simple. awesome. You're super smart. maybe you could make it more efficient by having more exchange area.

Please make a version with more turns for the zig-zag (more zig-zags), and with more length for the zig-zags while also increasing the distance between the corners of the zig-zags. This will likely increase the efficiency, resulting in the temperature difference between the inside temperature and fresh air being lower.

Nice build Smart!! How do you address condensation?

The music 🎵🎶 tho 👍🏾

Hi, great project. What is the foam board construction material called please.

If I were to use this for a bike camper, would I be able to make it smaller, or would this size still be needed?

Nice video - I like the simple concept, thanks for taking the time to produce and upload it. Spraying (or painting) the contact surfaces of the heat exchanger unit with a coat of matt black paint should increase the efficiency of your unit by a notable degree.

is that enough to cold your room for that PC Fan?

Very interesting design - thanks! How big is your aluminium plate?

very nice and simple design, but there is ventilators which needs power supply and consumption. There must be calculated the efficiency. How about natural interchange of air without ventilators? What's the volume of air per hour interchanged according to difference of temperature?

huh. cool. wonder how well it works?

That's awesome😮

Nice idea.

Whats the difference btw this project and a real air ventilation product?

impresionante, se puede mejorar facilmente poniendo filtros de carbon activos y de polvo.

Go easy on the glue there buddy... Condensation seems like it will be an issue. Wonder if you could just design it at an angle so it just drains out.

Does this work for when its hotter outside than in? Like in Arizona, where I live?

Гениально!

I would need a filter on mine, but the concept here is solid. However, isn’t this an ERV and not an HRV since anyone living in hot and humid climates won’t get any humidity removed?

It's Working sir ? Thanks

very good job !!!!!!!

Smart stuff 👍🏽

what kind of adhesive did you use

how do You Catch and dispose the condens water? You need to come with another solution, because this ist v.0001 i Hope.

ahh, good technique!

What is that purple material called?

Can you please tell me the thickness of the aluminium plate? It seems to be thicker than soda can (0.2 mm as I measured)

nice. but u have to know the poliuretan foam esp/eps hardly emmit voc. only safe materials the pvc, pp, abs, nylon, pla, metal

I calculate the efficiency to be 47.8% . Assuming the fans are 56.3 CFM each, that's 0.414 kW of heat exchanged.

👌👍👏

Congratulation you have learned the art of making a box!

Un radiador interculer de un coche el que se usa para enfriar el aire Turbo tendría que ir bien

I think you need more cpu fans, isn't enough with one mate 😊👍

Idea is solid, but you should really educate yourself on the dangers of some plastics. Polystyrene is a material you really dont want your air to go through!

You need airflow fans!! The ones you used are static pressure and aren't as good for high airflow applications

I'm at a loss on what this does. If it's hotter outside than it is on the inside and you want to cool the house, it will heat the house. The metal plate serves no purpose.

Ok , the video is very cool but the start video is cringe AF

That's just wrong, you shouldn't use metal, you've just introduced a cold bridge, I'll bet anything, when it is cold outside, this is worse than opening a window.

There is no way those 4 inch PC fans move enough air to do what you want them to do.

Problem with this is, a situation where your house is at the desired temperature but you need more air is extremely rare, unless you have a zoo, chemistry lab, or open pit fire, in the house, the internal air being too 'contaminated' is a non-problem. Far more common a problem is the internal air is too hot or too cold, and you want to change this WITHOUT bringing too much extra air into the house.