Відео

One wonders if there is any difference in children's learning influenced by ventilation. I certainly remember getting sleepy by the end of the day in my naturally ventilated elementary and high school. My middle school was mechanically ventilated, but it's been so long that whether my memories were from high school or middle school is hard to say. But, even so, mechanically ventilated doesn't mean there was fresh air added to that airflow.

Perception is interesting. Kids assume everything is normal and get used to it. That often remains true even for adults until it's shaped by experience or learning.

Separate heat pump for every room. Micromanage those temps.

NCI formula

I just put the machine in my room and closed the door… I didn’t waste 35 bucks at the garage sale, the room doesn’t smell like it used to and now I’m about to turn on my essential oil diffuser.

Basically we poor people are doomed to smell chemicals 😥😥

Just did a DIY install! Very basic question, does Standby mode mean that the unit is turned on but not running? Mine only seems to have 3 options with the unit controller, Max, Min and Stb. It doesn’t do intermittent or smart mode.

Hi Corbett. I was wondering if you had ever come across any of the Passive House Research done by Enrico Bonilauri of EMU Passive? They have a website, as well as UA-cam channel. I just read through a PDF report I downloaded for free from their website called “The Interdependency of Envelope and Ventilation in Healthy Buildings”, which was commissioned by the Zehnder America company in 2018 and I thought that you might find it interesting. You can find it on their site under the tab “Services” and then “Reports”.

Hi Corbett, I’m currently struggling to understand what to buy for our HVAC remodel. I’ve paid for a load calculation and manual d along with some other manuals all bunched together in a residential software. I live in Florida so humidity control is the goal. What type of unit do you recommend, variable stage or single stage with stand alone dehumidifier? I’m trying to make the right choice for our house. Required unit is a 3 ton and house is built in 2003 but I do plan to air seal and insulate better

Wow, you might want to delete this video before I remember forever how dumb you sound talking this way. Too late…

Hi Corbett, your airtight eaves and butal tape is the best way of having airtight eaves, Hence, architects explaining this exact design. I live in a climate similar to yours.. 2020 I trusted a person to help me build my Skilliion Design conservatory. 3 mtrs x 5.4trs. Tinted black cleatlite corrugated roof 800 wide Which would mean the rafters would be spaced @ 400 right. The tosser questions my integrity when I explained the cleatlite is 800 wide. do the rafters should be @ 400. I should've sacked the person then and there. The external cladding is shadow clad 1200 wide which he had to cut extra lengths . All the framing joists and rafters the person Measured @ 450 Nothing lined up. The corrugated clearlite where it joins are not even sitting on the rafters. (Which I am now rectifying myself) When this person started working with me I explained I'm from a family of builders & had designed my build including the eaves like you have just completed. This person argued with me so much about my design re the eaves, in the end, I made a huge mistake . His way was better & quicker. BTW Not a builder. The biggest mistake ever, which of course I am now having to rectify due to the rafters and dwangs having gaps thus a very drafty conservatory.. It doesn't matter whether the special so called corrugated rubber stops. the wind, yeah right, not even. His exact words "You'll never be able to make this build air tight' I'm really annoyed I trusted another person to help me with my build which I'm now having to rectify myself. Hence, taking time out and refreshing myself about separate eaves. The overhang of the corrugated clearlite at a guess is about 150 - 200 if that. I honestly feel like getting my circular saw and zooming along the 5.4 mtrs overhang, and running butal tape along the 5.4 Mtrs then nailing a 6x1 barge boarf and build the correct soffit. The same soffeit design in your video That way there'll definately be no drafts I made a promise to myself, this is the 6th house which I bought in 2017 never would I ever trust another person to help me do any building whatsoever, given the ways this person did such a botch job.. Honestly, I cannot stress this enough The only way to build eaves so the eaves will not be drafty is the way you have shown people in your video. Drafty and lazy persons eaves is the new name for those types of eaves. I know because at present that's exactly what lazymans eaves are. DRAFTY I've recently bought a lifestyle property with a million dollar view. Well I will definitely be the only person building my cottage. No mistakes.😂 Keep doing your eaves the way you have done them in this video. Especially if you want your family to be warm. Well done! Keep up the good work. It's better to take a little longer and get it right Than build the rafters a quicker way and have it drafty as..........

just post the source www.epa.gov/indoor-air-quality-iaq/ozone-generators-are-sold-air-cleaners

Hi Corbett, great video! If you know your ERV is going to die one day and you only have so much space available to install a new one why not do a hunt for a replacement now? I bet someone has the same Broan ERV sitting in a box somewhere that they never used and want to sell.

If water vapor passes through the membrane of an ERV, does CO2 and other air contaminants also do the same?

Hey Sir, interesting stuff. I have Panasonic Nanoe X air conditioning at home. I only use the cooling in the summer. I've never used the Nanoe X particle spreader. Is the Nanoe X the same as what your are talking about? Should I be worried to use the air cooling alone? Can't find much info about it, almost all video's on Nanoe X are from Panasonic them selfs. If you read this, can u give me a little advice?

Watching one of the channels I watch about narrow boats... I spotted an interesting thing they are using over there. They have a very small HRV unit for those boats. Not sure if there is an ERV version but It is interesting for RV use etc. I was looking at a cheap import HRV (I know) to install out in my shop to help keep the shop air cleaner than it is. A big unit would actually work great for the amount of gunk in there but they are pricey units. It would be nice to exchange air without loosing so much cool air when it's 110* here. Right now I have a 6" fan that I use to add ventilation when making a mess. Better than nothing but not enough.

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NIce Job Corbin!! Very well explained. I really appreciate you getting this info out as it is much needed.

Very interesting. I'm about to start training for HVAC

Thanks for putting this together. I am planning a gut rehab of an 18-unit multi-family tenement building in NYC. Each unit is only about 400-500 sqft. I plan to replace the central gas boiler with individual unit heat pump, rip out the wall and add close-cell insulation, and replace the windows. Do you think this will get to the 2 ACH threshold you mentioned in other video for the need for ERV? Do Broan or Renewaire still make small ERV suitable for small spaces? Which model would you choose if you have to replace your tinylab ERV now? thanks

Not a house I would offer aerosealing

What do you think of Linear slot diffuser performance. They do look stylish but not sure about their performance. I can see there could be a little bit or air restrictions from the way it looks.

Great job all around!

I enjoy your technical assessment and opinions regarding efficient home building and maintenance. I do have a question regarding ERV‘s in general. I will be building an ICF home of about 1500 ft.² for my wife and I and will be trying to achieve a very tight home in the process. I’m looking for your opinion regarding which brand of ERV system you would recommend. There are so many to choose from and the reviews are all over the place as to which one would be the best for my application. Being in maintenance all my life my focus as you can imagine would be the ease of maintaining secondly would be the cost of ownership. I know the initial cost upfront for a good quality unit is not cheap which I do understand. Your opinion would be greatly appreciated.

By the way, SF6 is *super-bad* for the climate. Its Global Warming Potential over a 100-year period is 22,800 times as bad as CO2, molecule by molecule. Google's AI calls SF6 "the most potent greenhouse gas known." Its use in home testing needs to be scaled back to zero.

Good point, but it's creating an electric field, not a magnetic field. I could get into the details, but this is the simple nitpicky comment ;-) Love your channel!

When I see someone using a probe rod, I lose attention to anything they have to say. HPT meter, dig down to get a 10 ft reading and if soils are bad there, helical to 25 kps and call it a day.

More of content like this please, these are really great content and interesting!!!

Can a uvc light nuke bedbugs?

what about using 1/2 plywood ran horizontal with house wrap would that be a good choice?

We pull the high limit and insert probe there so you can’t go around telling people about not seeing your hole lol

Reason why I couldn’t do that number 9069 I couldn’t be an hvac or something I’d be cleaning that shit all day.

As a hydronic hesting contractor, I have to say the standard of quality is so low in hvac. It seems much harder to do it right.

So...yet another annoying note for the gullible.... Its easy to find 'independent labs' who will conjure up any report you desire if paid enough... but an easier route is just to blatantly lie and or fabricate a test report as long as you leave the car right out back with the engine running...

Having designed such units and others for NASA from 1985 to 1990...I learned there are a large number of gullible people in the world who lack critical thinking skills. Another note...at 400° it depends on the rate of air flow and how long the pathogen of concern, wether microbial or viral is subjected to such a temperature....Some pathogens may be 'killed' and others simply deactivated. Some pathogens will be biological and some will be chemical... Even when a biological pathogen is killed or deactivated it may still have the capability to reactivate, simply mutate or spontaneously regenerate. Chemical pathogens are often unaffected. Therefore is is prudent to not only kill and deactivate but to also physically remove the pathogen. in whatever state of existance. Because you can still be easily afflicted by a pathogen which is generally regarded as being 'dead'

Hi Corbett, it's my understanding that those pleated filters that are "carbon infused" simply don't contain enough carbon mass to effectively eliminate chemicals for any sort of extended time. Do you have any research or data contrasting pleated carbon filters to something that contains larger carbon pellets in a thicker kind of honeycomb structure? Or more broadly, is there any sort of certification for carbon filter effectiveness?

Ok. UV light is bad. Check. Be most fearful of the unknown unknowns. Check. But did he say that improved ventilation prevents the formation of larger particles and that the smaller particles that remain present a greater risk because they diffuse deeper into the lung tissue. Game over, man. Game over.

Certification is a liability shield for manufacturers, it has nothing to do with actual health.

I can confirm, D. R. Horton sucks

I’ve done this service on my indoor head 4-5 times now, with your instructional video. But there’s something missing. What about the bank of coils in the back that faces the wall. How do you clean them effectively with the limited space due to the ceiling. Been using Viper coil cleaner but hasn’t effectively cleaned all the coils, this time around.

Years ago I had a talk with an HVAC designer. He said he went into a commercial building and the exhaust fans didn’t work. So he asked the project manager about it, the guy said don’t worry about it. So he called the building inspector. They said nothing we can do about it. So he asked what does that mean? The response the inspector said we went rounds with him til we were blue in the face and there is nothing we can do. The code book says every bathroom has to have an exhaust fan, but no where does it say it has to work. So this contractor buys broken ones from a salvage yard and installs them to save money. So when you say the exhaust doesn’t work, by code it doesn’t have to.

you need to slow it down and be more specific of which scrrws to remove

Almost all gas stoves leak gas when not in use (ie. when the vent is not on) so your solution does not solve anything.

It's a cool product but wouldn't a wood buck extension (say 2.5 inches of ripped 2x4) plus the 2x6 stud behind it (the wall jacks) already have an R value of close to 11? Even a triple pane window is around R8. I suppose there's still a three R gain for a couple square feet of wall per window. I'd want to run the numbers first, I suppose. Definitely an interesting product.

Great system. I have created almost the same system with a few key differences. First my exhaust fan is a remote fan located in the attic exiting through the roof. I used a Linx silencer right before the fan and it works very well, especially since I have a 1,300 cfm system. My make up air is where things really differ. I ran a duct line under the house out the foundation using a square to round adapter on one of the crawlspace vents. A Belimo actuated damper controls the trunk line when the fan is in use. This crawlspace line then ties into the return on my HVAC system. When the exhaust is in use the damper opens and I wired a signal into the thermostat to hijack the HVAC fan. The fact the return line is connected to both the outside duct line and the regular house return allows the system to self balance pressure wise with no noticeable difference. The benefit to this design is that I use the existing HVAC to condition the outside air in both hot and cold conditions. The other benefit is the “brains” cost. I control all of this with a $25 dual relay and 120v to 24v doorbell transformer. All said, well done. Not enough people understand the benefits of indoor air quality and the need for makeup air.

So I need to know, if I use a water based air washing system in my home instead of fibrous filters to remove both particulate pollutants like pollen, cat hair, and dead skin particles, and also water soluble air pollutants like VOCs, will that remove NOx pollution as well? And if I then use a dehumidifier to bring the washed air back down to target humidity, and a 254nm UV sanitiser (with the whole system inside an opaque case to protect us from the UV) to make sure legionella doesn't breed on the dehumidifier, will that work and give my family safe air to breathe - without ozone, without legionella, and without all the pollutants commonly present in untreated air both indoors and out?

It's great if you have a space in your home or office that will not cool off. Otherwise just get a fan but i think there is a place for this because not all of us can afford to rework our ac system.

Going back to chemistry... you can't create or destroy, so the true formula is NO + O³ -> NO² + O² (they are missing the oxygen in the output). Also, one of the top causes of death is overdosing on di-hydrogen oxide. 😀

I feel like I need the cliff notes of these cliff notes. Any takeaways I missed? -ERV is better than HRV chemically speaking -It’s hard to notice ineffective vent fans. Check them