Complete parts spreadsheet: cityprepping.tv/3wYBqpi ... Download the Start Preparing! Survival Guide here: bit.ly/3xWhVwZ - start your preparedness journey: bit.ly/3xZhWlY Some of the parts used in the video: * Generator: amzn.to/3fVX3kX * Shed: amzn.to/3YnKShE * Blast gate: amzn.to/3tfETxA * Attic fan (I would recommend a bigger one): amzn.to/3WIBy81 * Exhaust heat wrap: amzn.to/3DWa6uF * Flex exhaust pipe: amzn.to/3UndAh2 * Muffler tailpipe sealer: amzn.to/3G0HkvN * Metal zip ties: amzn.to/3RAQSBo * Complete parts spreadsheet: cityprepping.tv/3wYBqpi

Great build! Pro tip: When caulking the vents on the outside, only caulk the top and sides. Do not caulk the bottom. If moister does find a way in around the top and sides, it will have a means of escape at the bottom and will not become trapped.

Man, you really be going above & beyond for your viewers. Been watching for a while now.. you're a modern day hero man, keep it up!

I find your attention to detail refreshing.

make sure the temp inside dose not get above 120f with derating or 100f for normal rated use. chris has a good design, two things: up size the fans to 12" the one on the back have it ducted directly to the back of the alternator (gen end for those not in the generator industry) 99% of failures your going to see is the alternator overheating and failing. they are VERY sanative to heat.

I found it over the years the threads on the exhaust pipe are generally the same as half or three quarter inch pipe. So I always take the exhaust pipe and small muffler off and run pipe a couple feet away straight up in the air outside the building changing it to 1 in pipe after about a foot from the box and then put in a 180° curve on the top to keep rain out not only does it get the exhaust fumes up in the air and away from people it further quiets it but by about 20 decibels

Nice one Kris, Thank You! Something my Grandfather once did was use some metal struts to make a cage for the generator, then he used some strong springs and suspended the generator from the top metal struts so it was hanging. Makes a world of difference on the sound and vibration.

Kris this is incredible. And you are so helpful to provide all your steps and how you made your decisions! I hadn’t thought of putting my generator in something like this for using it. Wow thank you!

This is excellent, I can't justify the whole home backup system for like $12k right now but a ~$1k from Costco or whatever inside an enclosure like this is feasible

Love this! Thank you for posting this. I'm actually planning on building out a generator shed, your timing is perfect.

This is one of the better videos I've seen & covered my rear. I "WAS" gonna use foam board but quickly changed my mind after watching. I just want to do it right regardless of costs.

Very nice! I've got something similar going on except I placed the box in my basement and vented it outside via a Vortex inline fan. In the event of a prolonged outage I don't want anyone hearing/knowing that I have a generator. I realize this comes with extra risks but I've got carbon monoxide detectors nearby. 100% grey man set-up.

This actually inspires me to build something similar not for a generator, but for an air compressor for my shop. I don’t have a lot of floor space in the shop, so my thought was to build a lawn and garden shed and put the compressor in there, but it would be too far away from power and too far of a run for the air supply. This is just about perfect and I can set it up right next to my workshop, eliminating those two concerns. Thank you!

So glad you got around to this project! I know you have been buried with more urgent issues for us to address! Thanks!

Well done. I'm thoroughly impressed. You've thought of everything!!

This was GREAT Chris! Thank you. If you do another, or want to modify the exhaust pass-thru; A tankless water heater exhaust thimble is perfect for this job. Does the same thing your custom 'thimble' does except pre-made to route hot exhaust through combustible materials.

Great job, well done. Here’s a tip to reduce more sound. Get about an inch stand off with a piece of plywood that’s a little larger then the exhaust opening. Add the stand off and the plywood on the inside to cover the exhaust opening. This will help baffleing sound more.

I have done this several times, you are correct, the fan is too small and you should be blowing air INTO the box not exhausting air, it is much more efficient. Also a "Certified Exhaust Thimble" for combustible walls should really be used as fire codes are not a bad thing.

I put my fan down low and revered it to suck in air. Then it blow it out through the top vent to expel any gas that might had built up. Good idea to use an expoliosn proof fan as well. Bit more expensive but not as much as a new generator or house. Cool build.

Superb bodging skills mate. I think its really good to develop the skill set required to fabricate functional items, especially since we might all be forced to do this kind of thing more in the future.

Very cool video! I actually have this project on my to-do list as well so I’ll definitely be referencing this video when I do!

Nice work. I see you watched some of my videos on building a quiet generator shed and put the ideas to work. Glad to see some of these ideas showing up in other videos in the wild. That's the beauty of KZfaq!

Sweet build. Been thinking about something like this for a while now

That was fantastic! I was just starting to think about building one for mine. First I have to see if the hoa lets me have a shed outside! As always, thank you!

I’ve been trying to think of a way to knock down the noise from our generator. You sir just showed me what I need to build. Thank you!

Great thinking re: the rubber horse stall mats! I never would have thought of that use for them. I might pick up a couple extras when I go buy them for my barn.

For good ventilation, the general rule of thumb is to have twice the area of passive INTAKE as you have ACTIVE exhaust. You can either do the math on making one hole, or (the simpler way) if you cut a 4" circular hole for the exhaust fan, cut two 4" circular holes for the passive intakes. (The shape isn't important. Just the area of the holes in respect to one another.)

Thanks for making this vid! The exhaust wrap is a lot easier to work with if you soak it in a bucket of water for several hours first

Great video!! Thanks for the information and perspective on this build 👊🏼🇺🇸

I have a Firman 10,000 W tri fuel generator In a box similar to yours. I live in PA and have had to use it on many occasions. I do not us the sound dampening boxes, I found.they make little difference and hold heat. Before attaching another muffler, CHECK YOUR WARRANTY! Outsourced mufflers change the compression and will cause failures it also voids most warranties. We live in a world now where people see you have something they want so they steal it. I had a welder make me two 4 ft.rebar pcs with steel rings welded on that I drove 3/feet into the.ground, cemented in and ran steel cable through with a heavy duty lock. I highly recommend hard wiring the generator to your panel by a qualified electeician. Electricians and in our area call the plug-in the "pig tail of death" many people start their generator, THEN plug it in, which is a good way to get electrocuted. You DO NOT need another box, just a simple transfer switch that prevents you from back feeding the lines. You cannot power your box until the main switch is off and then the generator breakers can be flipped on. Also, flipp the breakers to the items with the highest draw first. Once.I learned that I can now power my whole house. And make a schedule to run your generator at least every two weeks and check the oil. It is a great feeling to have this item as a.back up.

I've been waiting for this video since you mentioned about it months ago. Well worth the wait. Thanks so much for posting!

Well done. I thought you did a pretty thorough job of addressing everything needed to do a build like this. I think you did a better job than most of these complaining keyboard DIYers would have done. Obviously someone can easily add or take away anything they want for their ideas. I have a old 4500 watt generator that is incredibly loud and wanted to build something for it. Ideally a little smaller and something that I could setup and move easily. Thanks for your ideas.

The spring idea is fantastic.

Two things in a generator that hate heat; heads and generator windings. If you have 200F inside that compartment you have a recipe for disaster. Look for a 10-15F rise. I can see right away your fan is undersized. For me to achieve the desired temp; rise I went for a 16" AC infinity 3000 cfm fan. Sarted out at 12" 850 cfm and inside was over 125F. Another issue you have is the escape area on your compartment hoods appears to be smaller than the fan exit area opening in the compartment wall. My generator is a 5kw Honda. Yes you need to keep the propane outside the compartment. When installing insulation consider ïnsulation pins which you can find on Amzn. Saves drilling holes thro the walls.

Thank you! I “went ahead” and watched this video. Liked !

Excellent build and perhaps essential if the grid goes. I have regular intel up on YT. Keep prepping guys 👍 🙏 ✝️

I “went ahead” and liked this video. 😂

I have a dozen comments and suggestions, however, I won't bore you with my opinions. You showed a beginning decibel reading (79.6dba), was there a completed decibel reading? Considering, plastic, wood, and foam are all combustible materials, using *Rockwool insulation was a great choice! I use the same brand (different variations) in my house, garage, attic, and generator shed. In combination with my solar/battery storage backup system, I use two 2500-watt dual-fuel generators with a combiner box connected to our 250-gal. bulk propane tank with a factory dba rating of 53dba. Inclosed is about 45dba. "Rural Prepping" 🤠

Great design! I would think the air should draft into the engine / across the co2 sensor, so the sensor doesn't trip from Any residual fumes, exh. Leaks, off gassing ,etc. Tks

Very cool build!

Love this proof of concept. Do you think anymore bafles in the intake and exhaust boxes would make any significant improvements. Also the exhaust needs to be lower sound the sound is not projecting out into the area. If you are using this during a grid down type issue its going to be a lot quiter in your neighborhood .

Nice job and gentle, smooth explanation. Thanks!

VERY NICE!! I have the same unit assembled and ready to finish come spring thaw. I will copycat your process. Thanks!!

If you’re looking to really sound proof something, look into mass loaded vinyl. It’s what movie theaters use to make a room truly sound proof. The thicker it is, the more exponentially sound will be deafened. Air is the #1 reason sound will get though so it might be smart to build an additional box around the generator, inside the shed. Then wrapping mass loaded vinyl insides both boxes. I guarantee it would be

I did something similar with my generator, but after all the time and money spent on the project I realized I could have purchased a cheap Generac generator with enclosure for the same amount. Since I also have solar, I only use the generator if my batteries get low.

Nice Video. I think it is easier to start with a honda inverter that has below 60 decibel out of the box and then reduce that even more. In a town 60 decibel is still noisy and easy to hear.

I love these kinds of videos as a contrast to informational/news update videos. A bit out of my means personally due to the amount of materials and time and engineering prowess but nevertheless it’s a very Impressive build to watch.

Thanks! Your instructions are so clear, even I can do this project!

WOW, AWESOME VIDEO KRIS THIS WOULD BE SOMETHING I COULD DO FOR MY GENERATOR, THANK YOU FOR SHARING THIS WITH US.

Thank you for posting this. I may give this a try.

This is brilliant! I’m downloading this. Thanks, Kris.

Awesome. I was wanting to make one but hadn't started the process of figuring out how. Thanks!

Good evening from Syracuse NY brother thank you for sharing your projects

Good job! Thanks for sharing everything!

Great project Kris, thanks for sharing!

a 4 inch strip of cement board on your fence will block unwanted heat. other than that this is the best video i have seen on this so far!

You did an amazing job on that project! Great job Chris 👍👍

If you invest in a Cummins RS series machine (1800 rpm, liquid cooled), she is quiet right out the gate and great on fuel mileage. Not cheap though.

I would recommend using a patio container with a fan for exhaust. Some fit perfectly around the generator.

I wonder if you could adapt this to a faraday cage when not in use

From what I have heard about those sheds is to make sure you paint them with a great UV exterior paint to make the last longer in the sun. One complaint is they get brittle if not painted.

Excellent video. QQ; if the venting system (intake and fan to draw outward) is strong enough, could you get by without having to pipe the exhaust too?

I enjoyed the video, I have been looking at doing this same thing. Thanks for the ideas.

Tell me, could you do a video on what we would do if we had an EMP attack on this country with the balloon, having crossed our United States from China what would prevent them from doing that and how would you survive it? Would your ham radio even work?

SOUTHERN PREPPER 1 is working on an EMP video. I'll watch all the channels, just to cover the bases.

Small exhausts? Use fireproof cotton material to keep it centered in larger tube.

Great solution thanks for the video. Awesome.

Wow! I really like what you did there. I like that you payed attention to detail as well. I am the same way with the details. Going with the rock wool was key. I wouldn’t have used anything different than what you used. I do a ton of project and use a wide array of tools and devices and I can see that you used all good quality products and methods. Super super happy for you. 🧠🏆🧐

Very well done. Thanks Keis

Good video very detailed I guess the million dollar question is how many trips to Home Depot

Nicely done! If you ever get a chance, have a look at a film set mobile generator, might give you some idea's for another build or upgrades. Expanded metal/perforated metal covering your insulation will give it support, a blower fan blowing into your air intake area will aid in cooling ... just a couple ideas. Great job otherwise, cheers!

When using exhaust heat wrap you can soak it in water and it will pretty much completely stop the fiberglass shards from getting into the air or poking you.

I saw what you did there with the nail, I like it.

Great video. Valuable information and it’s well put together 👍

Great build Kris!

I'd also add seals on all the doors/lid - anywhere air can escape, so will sound.

Cool idea. During the last ice storm, I could hear generators running throughout the city. With the usual noise pollution levels way down, it seemed like the sounds of generators traveled quite a bit.

Nice job. Thanks for sharing. I like the motorcycle muffler. Good idea. I saw a guy who used an RV muffler. It’s odd that the rock wool made you it’s because it is not a fiberglass product . But I guess we all have different sensitivities

Nice build, thanks for sharing.

you can use a prc drain cover thing (not sure what it is really called but it has a hole and is surrounded by materia, square with a round hole with slats). It lets you seal the hole and prevent critters from climbing in...easily attached to unit with adhesive. as others have said, don't seal the bottom.

Can you let me know what duct collar you used on the double wall exhaust duct pipe. It is not mentioned in the parts list, but I see it in the video. I found a couple of items on HD that might work, but I would rather know what you used. Thanks very much for the video and all the details. Great work!

Nice box! David Poz just released a video on making a generator/charger using an old treadmill! If the zombies arrive, put the old treadmill to use!

Very cool build! I hope you run it for like 8 hours or more straight to really test it.

Looks like it was a fun project. Nicely done 👍

How did you connect the 1" exhaust hose to a larger hose to fit the muffler? Great video, also. You have helped so much, thank you.

That’s awesome! What was the total cost for everything (except generator) from the root to the fruit? 👍🏾

I run the Predator 3500 just nakid in the side yard behind standard yard fences. Standing out front say 20ft away with gate closed its in the 30-40 decibel range. At the street curb you really need to listen to hear it. Neighbor next door? There are two 6x8 sheds back to back with yard fence between the generator and neighbors house. Checking it again noise level is quite low. I think your shed with a quiet inverter generator would be super low noise levels. If I have weather I leave the generator in the shed with the door cracked. Noise level is definitely lower.

I’ve thought about building those baffle boxes into the interior. Seems like there’s enough space and might be able to make more turns and cut more DBs off

Pallets free, other than screws, Gas, etc. Looking into more info "WOOD BURNING STOVES" STUDY BUILDING WITH PALLETS

I need a box of those nails!! Those nails are amazing. 11:14

Best video you ever made!

Impressive results!

Good video Kris, thanks!

I would never use Qynbaflex outdoors. I use that for interior applications only, and Oly on trim work.

Great work!👏🏾

Nicely Done. I wonder if you put baffles inside of the boxes, if it wouldn't cut the sound down even more?

This is genius. 💫

My husband made a similar setup for our tri-fuel generator but instead of a blast gate he used pvc pipe and a screw-on pvc cap for when it's not being used.

Great video - thanks!

I can run my generator in the rain now! Thank you