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CPHB Tim

Preserved? Why would you want to use perversed wood. Sounds naughty.

I"m lazy can I skip the 2" of gravel on the ground and just put a little sand down to level it out and then a vapor barrier, then foam then wood? the vapor barrier would stop any capilary action. Charlotte, NC

I would love to learn more about roof panels.

Does the interior wood hold onto odors from cooking?

ピタットハウスに申込金を横領されました。

i appreciate a lot of the perspectives & ideas offered by respondents in the 10 steps section, esp on communicating aspects avg people will find meaningful, and building up a sense of pride with collaborators/contractors. even the bonus steps & tips were helpful reminders to look at the entire project (more than just structure). while i've got zero first-hand experience (other than water jugs my dad stacked in the house, and the pvc hoop-greenhouse he made outside the south wall), or formal edu on the concepts of passive building or even architecture, i've spent years learning, and i'm close to building (self GC & much of the labor) the 1st of my designs. it's exciting, and daunting. guess the reason for hesitancy to get involved with the PH community or Collective mentioned here, comes from the dismissive & condescending attitudes experienced when i reached out on a PH FB page for assistance/clarity. even seemed like some allusion to this at multiple points in the presentation here. the other thing, somewhat related, is a perceived hostility to breaking the "rules" of PH Cert (say, not using triple glazed windows) and not being very open to work-arounds that effectively solve the same equation with arguably better results. least the PH community is smart (or at least knowledgeable?), unlike other hobbies and interests that have i've involved myself in communities for (don't ever LS swap a car, and the custom PC building community is a masterclass of Dunning-Kruger). vintage sportbike folks are great, to balance my negativity here. anyway, thx again for sharing this so GED enthusiast plebs like myself can glean some insights!

@16:20 why is that? how would it be colder if it's a longer run?

Brilliant video. 63yr old builder in planning stage for two homes in Barossa Valley . Thanks

Does the glare from floor to ceiling glass cause user headaches? What happened to Frank Lloyd Wright's concept of window from chest to ceiling for better task daylighting?

OR,try this - a log house using kiln dried laminated 2x stock , in a interlocking butt and pass corners with rubber seals running the length ant top of the 'logs' . then apply your wood fiber high density insulation panels on the outside sealing all joints . over the panels install furring strips every 50 cm or so and install a siding of choice . the logs on my house are 14 cm thick and the insulation is about the same . the cavity between the FS acts as a vent to remove any moisture buildup . The entire process is super fast saving on labor and offsetting g the additional cost of the timber .the results are spectacular from a heat savings and comfort level .

There are several technical details in this presentation that can be used to benefit our current and more conventional HVAC systems. The analysis on how the Coanda Effect can help better distribute air within the room could be very useful. Appears to be some things that need solved before we might see a sustainable market for this technology. Interesting none the less. Thanks for sharing.

The particulates come from the smoke and evaporation of what you are cooking, the oils and greases. The same particulates would be created when you cook with electric stoves. Use a properly installed exhaust fan, even with electric stoves and cooktops, and all of these issues goes away.

Clearly, it's your ignorance of passive solar that is bad. In Australia there are buildings in some locations that are not passive house, but can be comfortable for most of the day and much of the year with the windows open! Looh up NATHERS 10 star rating.

No comments...wow. Keep up the great work AJ

The Reimagine Buildings video on this project is also really inspiring: th-cam.com/video/JmJ6BvQkk-0/w-d-xo.htmlsi=4ISlqPSkA0Ep4UPh

when 7KW version?

This is really great! From someone who skims along on the brink and occasionally goes over. There is so much liberation in opening up to others about failure. <3 Thanks, Lois & PHA!

I'd recommend this lady visit a properly designed passive solar house... seems like that school just wasn't designed properly, there shouldn't be any sunlight hitting the glazing during the summer if it's designed properly... using a poorly designed installation as the example and then extrapolating that to "Passive solar must die" is pretty extreme and i think does more harm than good.

Can anyone suggest a practical solution for dehumidification/cooling of ventilation air for single family homes? Most dehumidifiers require much more than the typical 100cfm

Helpful. Thank you!

Yes you can, spent a year in an office block just like that - no heating and no cooling.

Blower door testing and air sealing are under appreciated tools for building and remodeling construction.

Save energy = Save money

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14:30 Can someone explain the positives of the refrigerant change? I've heard less effective warming potential, but is that not offset by the additional costs/risks?

Hello. Contact info for the Gradient folks?

not so sure about cross laminated timber but the idea of cork has been bubbling in my head for over a year since I first saw it.

seems to me that the house needs to breath... Evr /hrv do a great job. just enough so the occupants thrive. On the other side of this ventalation is air sealing to keep the house from breathing where you dont want it to. So once you get the envelope sealed up to the size of a 2 x 2 post it note and then add insulation my real question becomes how much thermal mass should a house need to keep the temperature moderated. I live in temp zone 4 midway up the state of Tennessee. Seems like one is either in Reisenger land or up in Canada in the oh to cold freeze your nose off area that people are building and discussions. So one can look at the good enough buildings, net zero / ready homes double stud, or spend enough on closed cell foam to send a kid to college or buy that insulator his new bass boat. Eventually there does become deminishing returns. What I really want to hear is What one can reasonably expect to break even roi on a building that is not in austin or onterio but in a place where I actually have 4 seasons and humidity that one needs to have a decent size dehumidifier installed for those 4 weeks a month that make life interesting to go outside and those 5 days a year when there is snow on the ground

If using the batt insulation in walls, do you still need a vapor barrier with this?

Heating season do not last only during the winter but about 6-7 month a year and in the summer you need AC the most for two months. Nothing wrong with building a comfortable house but it is not what passive house about

Love this! Brilliant effort, keep up the good work!

The birth rate is low. The death rate is high. How can we need millions more houses? Are these houses for the border hopping invaders or are these statistics coming from the same bureaucrats that calculate the rate of inflation?

"We need buildings which are not only beautiful, but also nice to be inside". Very well said. Unfortunately, most of the architects I've dealt with, are only concerned about the external looks, or in the best case, internal looks too. Obviously, "feel good" part for architects is too intangible substance, hard to sell to customers, hard to show it in shiny architectural magazines... I wonder if those architects know that modern human being spends 90% time indoors.

This says the gradient heat pump is $3,800. Is that the expected price of the all-weather heat pump? The regular version seems to be priced at $5,000

TH-cam Loma Linda University SDA Church 4/26/24

Thorsten Chlupp's work on building integrated thermal storage is really worth looking into. Storage is the key problem with transitioning to cheap non fossil generation. I would not be surprised if we start including ~1m3/100m2 of storage in the near future.

Beautiful video, very explanatory. Regarding heat pumps, what I see done here in Italy (so different thermal zone), in the boiler pass is simply to calculate the demand and spread it over time. I don't know about the UK, but even in cold areas here they generally don't run all day, but for example a certain number of hours a day, divided between morning and evening, at temperatures as said before others. You run them for longer at much lower temperatures, e.g. 65/70 to 45/55 for several hours or even in some cases at just under 40 for the whole day. I am talking about solutions with radiators and not radiant solutions. But from many feedbacks it seems to work very well. NdR the climate zone and usage patterns are different I know. Anyway congratulations video absolutely remarkable and great in the part of the description of thermal discomfort due to excessive glazing.

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THANKS JOHN 🤗👍💚💚💚

Heat pumps are not rubbish, some of the buildings they are being asked to heat are thermally rubbish, therefore they will perform in a rubbish manner. This is a problem of sets; if a fish is an animal, we cannot say all animals are fish. It's maybe also a problem of bias, many/all of the ones you are asked to investigate are problematic, clearly all are not problematic.

Good times!!!!!

Material cost for the 4 layers of sheet material will be $6 - $7 p/sf. Material cost for 4" Concrete with 4" EPS at about $5-$6 p/sf (dependent on reinforcement req). Big DIY advantage goes to the plywood/EPS system; consider using a Permanent Wood Foundation to eliminate 100% of concrete. PWF also DIY friendly. Perhaps an insulated concrete slab would prove advantageous by adding heat-sink value in colder climates.

Dense packed fiberglass, BIBS, is a better option in many ways than cellulose.

Great presentation

this house's roof is ventilated, on paper.

🙋‍♂️WE ARE EXCITED TO SEE THIS PROGRESS 🤗💚💚💚