I made a similar setup for my sunroof but with only one giant 5V noctua fan plugged directly into a battery bank. For the rear windows, I used blackouts made of reflectix with black cloth and some gutter guards glued on the top. With window rainguards, it was pretty much invisible from the outside and kept us comfortable during warm nights. We also had fans inside the car to help with really warm nights.

Your exhaust fans can only expell as much air as your intake fans let into the vehicle - if they'd push out more air, they'd create a vaccuum. For maximum efficiency (noise as well as power consumption), intake and exhaust volumes should be evenly matched. To further reduce noise and increase power efficiency, consider how much airflow you really need. The vehicle's interior volume is not that big. Let's say the volume is 4 cubic meters (which is almost certainly an over-estimatation), to refresh all the air in the vehicle once every minute, you'd only need a capacity of 240 m3/h or about 140CFM.

@MattTheDesigner

7 ай бұрын

From not enough to too much. Haha. Please hold for another year while I perfect. Thanks for the info!

@nickhernandez4264

6 ай бұрын

I am confusion from this comment

@akumabito2008

6 ай бұрын

@@nickhernandez4264 Ok. There's 2 parts to this: 1.) Fan capacity - You have a certain amount of air in the car, and you want to refresh this air. The intake fans pump fresh air into the car. The exhaust fans pump stale air out of the car. These have to be balanced. You can not pump in more than you take out. And you can not take out more than you let in. Making the exhaust fans much bigger than the intake fans , just means they are inefficient. They try to work really hard, but they can not pump so much. This will use more electrical power and create more noise. 2.) Airflow - to keep the inside air nice and healthy, you want to refresh it periodically. That means letting stale air out, and letting fresh air in. If you refresh it too slow, the air will go stale, and you will get problems with humidity inside the car. If you cycle the air too quickly, you're wasting electrical power on your fans by making them work more than they need to. If it is cold outside, you will also have a harder time keeping the air inside nice and warm if you constantly bring in cold outside air. In short: you will need to find a balance, where you refresh only as much air as is needed, using as little electrical power for the fans as possible. Hope this helps :)

@nickhernandez4264

6 ай бұрын

@@akumabito2008 very helpful, greatly appreciated ( you're to kind most people wouldn't have tooken the time to write out and explain ). Learn something new every day gotta love it 👍

@akumabito2008

6 ай бұрын

@@nickhernandez4264 you're welcome, my dude. Have an awesome day!

As a 3D Printer myself, and as a recent Honda Element owner with big plans for travel next seasons, I can totally appreciate the amount of work that goes into making such things for my own vehicle. Thanks for sharing! I'll be sure to be doing something like this setup!

@MattTheDesigner

6 ай бұрын

Would love to see it when it's done!

I made a setup for my camper shell that pulls in air from the front pass through window and vents it out the side windows. Absolute game changer!

My car has a similar system. It has a hidden blower fan installed in the dash. It pulls air from a weather protected vent, has vents throughout the vehicle that can be directed where needed, and is powered by a huge battery under the hood. My car actually came with it from the factory! I think yours might have this system too 😂 Just kidding, this is super awesome and I loved seeing your creative process. The reason I said that above was I stumbled on a video of a guy that was building out a van and didn’t want to cut a hole in his roof, and he utilized the factory blower fan. He tapped into the blower fan circuit and controlled and powered it with his battery bank, independently of the factory wiring. It still worked like normal, but when the car was off he could flip his switch in the back and it turned on his fan. Pretty smart, on a budget especially!

@MattTheDesigner

7 ай бұрын

Haha. Yes turning on the AC is an option. I think I’ve seen the video you’re talking about. I’m still a little scared to make changes to the vehicle itself but I might look more into this.

@timmykauai44

7 ай бұрын

Yeah I get it, especially on a new Honda which has a BCM (body control module), or more likely an entire module that just controls the HVAC. His van was an older econoline which has a very basic system

most cars have a build in vent in the rear! it lets pressure escape so that when you open a window on the highway it doesnt blow your sunroof to the moon, its quite possible by keeping a positive pressure in the cabin area these vents would react by letting out the extra pressure! great build! feel i learned plenty for my own challenges! thanks

Most of your airflow is actually getting blocked by your window coverings. Your window fan units are rated at 35 CFM each and not sure if they are even delivering that much due to the gap size. So in essence you have 70 cfm entering and 300 cfm trying to suck but you're not getting that 300, at most you're getting around 70 cfm +/-. Also you can't add the intake and exhaust together for an entire system and rate it at 370 cfm since it can't deliver that. If you remove air faster than replacing then you will have a negative pressure in the cabin and if you're putting more air in than removing then you will end up with positive pressure in the space. Typically when cooling, you will have a better experience with a negative pressure system think about attic fans in a house. If you adjust your window coverings to have a gap for fresh air and remove the fan altogether it will keep your car cooler than with the system you have now due to restrictions of those window fans and the size of gap you currently have. Finally to get the air to be replaced and not take a short cut from the window to the sunroof, you can always use a drop cloth or something similar between against the roof and drop down behind the front seats until about 6 inches from the floor. This would require the air to circulate down first then around the curtain and back up. Then you could use your window fans now to cycle air from front to back behind the front seats.

This is just way too cool! Now I just need to grab my Sawzall and cut a sunroof in the roof of my 4runner! Greg

@MattTheDesigner

7 ай бұрын

Haha. It might be worth it!

@gregwilsonnaturephotography

7 ай бұрын

Matt, yeah could be. I bought the low end model..... lol Greg

@jamesduncan578

7 ай бұрын

Use one back window for intake and one for exhaust. Duh

Thanks for another awesome video Matt. As a homeless veteran living in my vehicle your designs have inspired me. I do know CFMs from working in HVAC so your airflow looks plentiful for the size of the cabin in your vehicle. 400CFM would be considered 1Ton of heating/cooling capacity. Imagine pushing 400 basketballs a minute of air through your car that mix to help bring the temperature average down.

@MattTheDesigner

7 ай бұрын

Glad I could help Kev! Thanks for the info.

@MattTheDesigner

7 ай бұрын

@@portcityengineering that too!

Matt, I love your videos! I, too, love to over-engineer every aspect of my build, but you're next-level. Please keep them coming. Would love to see more of what you've done!

@MattTheDesigner

6 ай бұрын

Nothings quite as fun as over-engineering! That might need to go on a T-Shirt.

I always look forward to your videos; yet another great design! Thanks for sharing the design and documenting the process. 👍

Really enjoy your videos. While this setup is overkill for my needs, i can easily downsize the fans, etc. like you mentioned. Thank you for sharing. The peeping window is a good idea. Cheers.

Great job on the video Matt! Thanks for making it.

Genius system. Please Keep making more videos!!

CFM: Cubic Feet per Min. Volume of air in feet, could be and liner measurement eg CC, Yards, cubits as long as you get it cubed. I would put some Gaffer tape on the tiny bolts against the window so it doesn't scratch it or rip-up the tint. Excellent as usual, I love your sarcastic? humor, it's motivating. I look forward to each one, well the ones I like, Lol. Safe Travels buddy!

@MattTheDesigner

7 ай бұрын

You don’t like them all???!? Haha. Thanks for watching Mitch!

Exactly what I was after - thanks so much for such a comprehensive video.

I found your channel today from your old ventilation video and today I also found out you made this cool update to the system just uploaded like 2 days ago, please post more. 🎉🎉🎉

First video of your's that has been recommended to me. Instant subscribe, thanks for posting.

This channel rocks! Thanks man!

I really like your ideas. They actually inspired me to try the moon roof one on my camping Range Rover. I actually used a small usb outlet solar panel and leave the roof cracked so it kept the vehicle well vented in the hot days when parked. And reconnect the fan to a power bank in the nights when camping. Great job and glad you are keeping it evolving :)

Matt, mate i salute you.... this is goodness beyond the normal. thank you

You are a freaking genius Matt. Most under-rated channel on KZread.

@MattTheDesigner

6 ай бұрын

🙏🏽

@The94208

Ай бұрын

I totally agree ! Both the product and the video are crazy quality

This is good, now can you find a way to filter the incoming air? This is a must for urban camping in places that might be polluted, or places where once is temporarily forced to camp.

This content is brilliant. Cheers Matt

I love 'crafting' things. I love road trips. I'll be using some of your ideas. Thanks for making your videos fun to watch.

In such a small space as a vehicle I would either push or pull the air but not both, which ever way I would think a hood system to block rain with insect screen would be less complicated and less expensive. One important thing to know about airflow is you can't exhaust more than you can pull in and vice versa

Only upgrade I'd recommend, ability to make either side window fan exhaust. Easiest (but more costly, probably) add a second fan to the window units blowing out. In my brain this should still give you air circulation in less than great weather. As long as the intake and exhaust are spaced apart, you shouldn't get any short cycling. Keep a more powerful fan for exhaust to force the air out further. For my application (but I'll probably never build) I don't have a sunroof. I do have two rear windows that pop out with a manual clip. Definitely got my creative juices flowing. Love your videos.

@MattTheDesigner

7 ай бұрын

These ABS sheets and little fans could be configured in all kinds of ways. You should build one!

@tpod892

3 ай бұрын

This guy made one for his minivan's pop-out windows, attaching it to a window cover made with chloroplast. Allows for good air flow/circulation. Not as 'stealthy' as Matt's, but still a good option. kzread.info/dash/bejne/m6OjqpSngdOxgpM.html

Excellent, thanks for sharing!

I have a 2022 CRV Hybrid I use for weekend/travel overnighting occasionally! I absolutely love all your creative hacks! New sub, tyvm for sharing-Lisa👍

Wow! Just the techie I needed to learn from. Just subscribed. 😃

Love your modifications 👍

Glad to have randomly stumbled across this video as I've been trying to figure out ways to keep cool while camping. I'm now gonna look into rigging up something similar. Thanks for the design/ideas and the inspiration!

@MattTheDesigner

5 күн бұрын

Good luck Elijah! Let me know how it goes.

Thanks so much for your videos! I've learned so much and you make it seem so easy! I just went through 2 cancer treatments in 6 months and I'm ready to start planning (and building) for a life filled with adventure!

@MattTheDesigner

4 ай бұрын

Living life to the fullest! This is so cool to hear. Enjoy your travels my friend!

Thank you 💯

Love the book as well as the amazing video.

Thank so much.

so freaking pumped everytime you make a video, I just litterally mounted something to my strut roof rack thanks to you!

@MattTheDesigner

7 ай бұрын

How’s she holding up? Mine’s still holding strong.

@sachumo

7 ай бұрын

Solid as the day I put it on, I havent even painted it yet and only have surface rust on the cut ends after being in the weather for months. Your design is a lot smoother for air flow and I want to build it one day, but until then I found one of those work fans people use on construction sites that use power tool batteries it has a hook that folds out on the bottom, and the crossbar hangs over the sunroof and I just hang it from the crossbeam, one charge runs all night into the morning.@@MattTheDesigner

Thank you sir, that gives me an idea

Thanks for all of these genius window treatments. I'm converting a 2003 Honda Odyssey and ventilation is a serious problem. It only has the driver/passenger windows and two small vents in the rear windows. And that's it. I'm seriously considering cutting a hole in the roof to put an RV fan in. The part that scares me is trying to remove the headliner. Fortunately I plan to drive it till it dies or sell it as a camper so I'm not concerned about punching a few holes in it. Subscribed!

OMG Instantly SUBBED!!!! You’re great Matt!!! ❤

@MattTheDesigner

5 ай бұрын

Thank you zebra!

Gonna need way more videos you do a great job

Try it out with just the exhaust fans. Buy the rain guards for all the windows and just leave them open an inch or two.

@micdavey

5 ай бұрын

Yeah, if you have forced exhaust then you're going to get fresh air coming in regardless. Really cool work with all the 3D printing though!

Happy to stumble across your channel. I’ve got these phantek fans kicking around might have to give it a whirl

@MattTheDesigner

Ай бұрын

🌪️

Dude. You are such an inspiration. Thank you for your creations!

@MattTheDesigner

7 ай бұрын

My pleasure!

pretty darn awesome

I may very well need to reference this again

uh, might want to swap your window fans with your vent fans. You want to be pulling positive pressure inside your car, not negative pressure. helps to keep dust and stuff out

You are amazing my dude!!!

This is a game changer for car camping!!!

@t.d.5804

5 ай бұрын

Or simply get an electric car, some have camp mode, so the heater/AC runs, perfect inside, even in winter, run radio/streaming. No 12V battery worry like on ice cars.

Great stuff! Subscribed!

Great video!

This is really very useful

Yes I will buy

amazing!!!

with my set up of an bug out vehicle, due to hurricanes and the like, i find this an excellent idea. i would love to see a video of it working real time out in the field. because we all know it is how it really functions.

@MattTheDesigner

7 ай бұрын

I might try to devise some real tests to measure temps and airflow. Not sure exactly how yet though.

@christianwolf68

7 ай бұрын

@@MattTheDesigner overnight solo camp, with temp gauge on start and how they function during the night. if there is a noticeable drop in temp or how the air is moving thru the space

Re: the spicy youtube comments at the beginning. They're mistaking their own experience for yours. Personally, I love what you're doing, and at least 3.1k others agree

If you use a usbc pd Bank, you can get 12v out. You can over volt fans slightly. 12v is optional on the pd specification, and I've noticed anker isn't the biggest fan of 12v on a lot of their products

Fun! Cool to see your creativity and ingenuity. What you can accomplish with the right tools is quite impressive.

@MattTheDesigner

15 күн бұрын

So true!

I really appreciate that you read the user feedback and then took the time to update and remake this tutorial. The mark of a true designer! (And also you give your plans out for free?? Thank you so much!!) I'm converting my Cube into a little camper van for scuba trips around the southeast and I was worried about the moisture problem inside the car. (Moist environment + Moist diving gear = A very bad and moist time.) My university has 3D printers for student use, so I'm going to try this out and see how it goes! Thanks again!

@alisonleigh

5 ай бұрын

I don't have a sun roof, so I think I'm going to try having an intake fan on one side of my car, and an exhaust fan on the opposite side for air flow. (I guess just flip the fan facing the other way so it blows out??? I'll figure it out!) I'm brand new to this so if anyone has any input, feedback, or suggestions, I'd love to hear it. Right now I'm a little worried about moisture accumulating on the window of the exhaust side and I'm not sure what the solution for that is.

@MattTheDesigner

5 ай бұрын

You could try the one fan in one window and crack the opposite for a more passive exhaust. Then figure out an exhaust fan if that’s not enough.

@MattTheDesigner

5 ай бұрын

Or maybe a fan pulling air into the front and back window on the left side and windows cracked on the right.

Just bought all of the parts. Look forward to seeing how this works in the Virginia Heat 😬

@MattTheDesigner

3 ай бұрын

They’ll be headed your way soon!

Paint the car white, It drastically reduces internal temperature of car

I like to think of a CFM as a beach ball of air. It's one Cubic Feet of air per Minute.

On the topic of wanting to dispell heat from the switch, I'd put some bumpers between it and the ABS

Air exchange, great! Now if air could be taken from under the car to the inside, it would be much cooler. The other is to design a swamp cooler for cars, this design is almost there, just need a damp cloth to draw air through, and a drip system to keep the cloth damp.

Glue magnets inside of a sunroof wind deflector to make the sunroof more rain-proof. You can lay bug screen down and the magnetized sunroof deflector will hold down half while magnets can hold the rest.

wesome invention and video! Crazy good editing!! Mysetup is pretty jank, but i could make it better if lil suction cups stick to avs plastic.🤔

The problem with your batteries is likely because the fans are not drawing enough current and it is auto shutting down. Also you need flux to help with your soldering skills. Do not using plumbing flux on electronics. I recommend Kester 2331-ZX but this requires washing after because its conductive and slightly corrosive...but Kester 182 is another good rosin based option.

with the 12volt fans i would have used USBc PD and the highest wattage availible with a little voltage selection board

@from6454

3 ай бұрын

That is great idea. I have power bank with USBC-PD ability. No need to buy another 5V fan (not powerful enough, so you need three fans, of course also need to consider the Fan noise). I have plenty of computer fan that I gathered from years of used old computers. All I need is to add a speed adjuster. 😀😀😀😀

Cool!

9:55 the one battery banks might not have a low power mode, or a special way to enable low power mode.

To minimize noise on the top fans you shiuld add a small spacer between the fan filter and the fans themselves. Noctua makes one specifically for their fans and are known to be the best PC fans out there if you don't care about RGB

First video i saw and damn thats so cool. I dont need to camp in my car but ideas ideas ideas

The side window units are the neatest to see built, but they're a bit redundant now that there's a beefy sunroof unit. If it weren't for such a nice 'snorked' breeze position, I'd think they'd mostly just get in the way vs removing them.

I need that lil fogger/smoke machine.

@MattTheDesigner

6 ай бұрын

It's really cool. Got it from Vosentech

I'm going to recommend using PETG for your 3D printer. Cost is only a few bucks more than PLA but it'll handle the heat way better than PLA! (I also make parts for cars....Honda Elements specifically actually).

Underated channel very transparent love your videos +1sub

@MattTheDesigner

6 ай бұрын

Thanks @fanda9994 !

I'm subscribing just for the "Hitchhiker's Guide" shot...

11:28 That Marcus guy has some good insights huh?

@MattTheDesigner

Ай бұрын

He does. Unfortunately he doesn't know a thing about car camping.

I love this video! Thanks for the great design ideas. Just one thing that I would like to comment on. Your current design appears to produce negative air pressure. That is, the air pressure inside the vehicle might be lower than the outside air pressure. The potential problem with that is dust and pollen could end up gathering inside eventually, especially during pollen season. I don't know if you consider this an issue or not, but positive air pressure would be ideal.

@MattTheDesigner

7 ай бұрын

Always room for improvement. It’s still new so more testing needs to be done for sure.

@paradiselost9946

6 ай бұрын

sounds like someone has experience in either spray painting booths or dust free labs...

Awesome video! I recently made the V1 collapsible platform for my CRV and love it. Thanks so much for the plans. I do have a question for you. Will the battery pack you use for your window (26800 PD) run your sunroof? I know you said your sunroof battery will not run your window. I already own the 26800 PD and I’m hoping to use it for the sunroof, if it works. Thanks!

@MattTheDesigner

2 ай бұрын

Yes it should run the sunroof.

*I'm totally going to build this for my truck. Hopefully the rear center window has enough CFM.*

@MattTheDesigner

7 ай бұрын

C F MMMM. How did you make that comment bold. 🤔

420 friendly love it

None of those fans move rated CFM with the amount of restrictions you're putting in place. Still a neat idea I havent seen before.

Bro top notch jimmy rigging!

Neat.

If you car camp in a Prius 2014 and before that time, with the nickel battery, just hit ac button and set temperature, and you have a really comfortable night. I did it for 3 months in really cold and then hot temps. After 2014 they installed lithium batteries which have trouble starting in the cold temps. Just an idea. Although with your idea, you could do that in any car!

@MattTheDesigner

15 күн бұрын

I’d like to figure out how to do real AC all night. Maybe my next next video.

@dylan.-6527

4 күн бұрын

Sadly that limits the life of the hybrid battery. It's $3k to get a new one.

@dylan.-6527

4 күн бұрын

That hurts and limits the life of the hybrid battery. It's $3k to replace. Not to mention very small amounts to the engine.

you could probably do with just leaving the side wiindows open a bit and having the exhaust fans.... the exhaust fans removing air from the car will automatically draw air from outside via the windows...(or if you fit a vent lower down, from there.... some of the campervans have vents lower down, so it draws in the cooler air..)

@MattTheDesigner

7 сағат бұрын

When it’s not too hot we just use the vents. But when it’s hotter the wind from the window fans makes it feel cooler even if it’s not.

can't wait til you update to the san Ace or Delta 12V fans that are 200+ CFM. It's only a low dB level of 50+

Coooool…. Now if you were closer so i could help make stuff. I like the roof idea. Could fit most makes n models if it was adjustable or with attachments for each size. Most sunroofs are similar sizes right?

@MattTheDesigner

7 ай бұрын

I would think so. There are some fancy SUVs with giant ones but those people probably are staying in hotels.

I love it. could you provide name of the fans, cables, switch and battery?

@MattTheDesigner

2 ай бұрын

The links should be in the description.

Please consider making a fan that pulls AC from a pick up cab to the truck bed that has a cap on it. 🙏 I’m trying to design one now cause we take road trips with 3 large dogs and I need to keep them safe and healthy. Thanks for considering. I cannot believe a product for this doesn’t exist yet!

@MattTheDesigner

5 күн бұрын

I’m back and forth between getting a van or a truck. Depending on where I land I might make something like that in the next year or so. No plans for it yet.

Amazing Thinking. I want to ask you about the small and handy device which is producing smoke. where can I get it?

@MattTheDesigner

5 ай бұрын

vosentech.com/

ABS or PETG+ on the 3D printer. way better for dealing with high temps in a vehicle

@5:08 HAHAH Perfect. But seriously, pay this man

@MattTheDesigner

6 ай бұрын

💰

I just really like the sunroof design and function to having to get those huge rooftop fan systems…. Thou I’d probably leave my sunroof open during the night and storms roll in, what if the sunroof fans was intake comepared to exhaust?

@MattTheDesigner

2 ай бұрын

It’s easy to just turn them in. You really feel the airflow when you do that.

you need to make a hood in the upper part on the same window, and you need to open the roof

Would probably be easier to utilize the car's factory HVAC fans and just wire them to run off a 2nd power source and the window vent can be the exhaust.

Hey @Matt The Designer can you link me to that little smoke machine please? 🙏🏼 🍻

@MattTheDesigner

6 ай бұрын

vosentech.com

Neat to see, I enjoy how you explain your final product. 8:11 what app is that?

@MattTheDesigner

6 ай бұрын

Sketchup

You should try printing with PETG. It is much more heat resistant than PLA.

@MattTheDesigner

7 ай бұрын

I actually bought a roll of it but saw you need some kind of housing and need to dial in settings. I decided to get this project out the door before I started fiddling with that. But now that it is…