How Air Handling Units work AHU working principle hvac ventilation

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I’m a building mechanical engineer and I approve of this video. What a great and simple explanation

I’m loving these videos. I’m a construction project manager for commercial buildings and your videos have helped me understand HVAC a lot better. Thank you!

Im maitenance worker at a hotel; and i been operating an AHU for almost like a year now without knowing what "AHU" means.

Service engineer from the Netherlands here. Great video and explaination. I have never seen exhaust units without filter. It is common to have inlet and exhaust filters here. No matter if there is a heating wheel.

I work on these AHU’s every day and in the uk at NHS hospitals we have 40 of them and also air curtains in theatres. Very interesting work although it’s only 10% of our job. This was a great video.

Great Video! One correction I'd point out: When talking about the fans @ 5:50, the fan on the right is more commonly referred to as a plenum or plug fan. The EC motor isn't necessary always equipped on these types especially in larger AHUs as EC motors cap out at roughly 7.5 HP. Often these come with a standard 3 phase electric motors with VFDs for VAV applications. Perhaps a video on the several different types of AHU fan arrangements (fan wall, etc.) would be helpful and especially if it highlighted some of the control intricacies involved with each.

Nicely explained. I'm a HVAC design engineer and approve this message.

Was struggling a lot with comprehension and retention of these concepts with my online HVAC courses. This was so easy and well illustrated it solved all my problems. Thank you so much!

You're videos are better at explaining basic fundamentals than some the HVAC courses on Udemy. Best of all your content is "free". I have just joined a well know HVAC automation company and your videos are helping me out a lot.

I thank God i came across this channel. As a Junior Facilities Management professional, this will surely help me master my building services.

Really an engineering mindset video. Thanks a lot.

That was really interesting. Roughly what I figured but that wheel concept is new to me! Been brainstorming various ideas to build a air handler for my server room which I'll be enclosing soon and my goal is to also keep it as efficient as possible so this gives lot of ideas.

Another good tip. Depending on where your humidity sprays are, if you do not need them you might consider keeping the water in the trough but not powering the pump. I have seen where the humidity sprays are actually built under the cooling coil so when full if humidity drops it doesnt matter, it goes out the overflow like it should. A problem can occur, and I have seen it first hand, where if you shut off the pump and drain the tub under the coil you WILL carry over water into the ductwork. Air takes the easiest path it can, by taking the water out you have made that easiest path to be right under the coil, where the humidity is dripping down. So you have air moving quickly under a dripping chill water coil and depending on how the unit feeds, up or down, you could end up with water very far from where the unit actually is. It can really send people on wild goose chase to figure it out but its really simple, you have to either block it with leaving it full of water or find another way, plywood etc.

I'm only in secondary school and all of your content is so clear and intresting, thanks mate

ALL your videos are so helpful, and they are made to be really easy to understand. Really good use of 3D models (is it sketchup??? cannot imagine the amount of work you put into building these), along with real life examples. So blessed to have found you.

Being an electro-mechanical engineer in construction, i will say your channel is amazing!

Usually I never comment on VEDIO but your VEDIO is so convincing that I never stop myself to say something about it. You’re doing a great job Man, Keep it up

Thanks for the vid, understanding hvac systems helps me feel more gratitude for the laborers that work on these systems to make buildings feel comfortable and normal.

All your videos are very helpful!! Thanks Paul!