Can hemp be cross-laminated? I wonder if it isn't a better alternative to timber, as forests are best left intact, instead of being replaced with the tree-plantations required to create enough cross-laminated timber.

Good video. Try adding prices and longevity in future videos.

Great information!

I have never heard of #2 ferrock , so thank you i have learned something new today!!!

The heat pump is useful when driving for more than ~ 30 min ? Correct ? Thank you !

Another excellent video, Katha! I am currently driving a Ford maverick hybrid it's about twice the size of my previous really small economy car, did not cost that much more but gets much better fuel economy , usually 48- 50 mpg!!!!

Great video Katha

When there are a half dozen shows on HGTV dealing with 'flips', this is something the masses believe is their way to get rich. If you're smart, you will RUN...to some place the masses are not!

This is one of your best videos yet!!! Thanks , keep up the great work - you will reach your goals! I believe in you 😊

Lithium recycling will be a superior industry from here on out. Great show.

Probably not going to recoup the initial cost in savings. Todays air to air heat pump efficiencies have made huge strides and initial costs way lower. Better bang for the buck. Not to mention the leaking water pipes after a few years and depending on the handler, increased microbial growth in the fan and coil housing, so if you do install a heat pump system, make sure to address the probability of microbial growth in the coil and fan area of the system to keep your home healthy.

Good to learn domestic production is ramping up. I hope they can figure out how to do in a sustainable way between raw production and recycling. With current societal pressure on not contaminating surrounding areas adjacent to industrial processing, I feel optimistic. Thank you for doing this content!

great subject !!!! a lot of useful information ,very well presented

very interesting and relevant topic

CATL battery corp has moved away from solid state batteries. Their version works with a lithium anode, significantly lowering the base cost while producing 500 kilowatt hr density. batteries with total 1000 kilometer range/charge.They've also found a way to limit dendrite growth. Their battery has demonstrated zero degradation over the first 5 yrs of use

It would seem to be easier to reach net zero with a passive house as it requires less of everything. One could extend that principle to other areas, say water use by collecting grey water from those fixtures that would qualify and then use that water to flush toilets, as an example. Air to air heat exchangers would/should be required for an passive house as they are so airtight and would need fresh air. Passive houses also could incorporate passive solar heating designs which require nothing to operate and provide a portion of the energy to heat/light the house. Good video, thank you.

Cool

The S house looks promising.

one of your best videos ,very informative !!!! and excellent production values !!! even your choice of wardrobe was outstanding !!!!! you look fantastic !!!!!!!!!!

I am fascinated by heat pump & air handler technology 🧐 They are a perfect solution for mid-size to tiny homes, where a gas/oil furnace & air ducting would be total overkill! They also help keep indoor air cleaner and allow for _REAL_ zone control. Thanks for sharing this 🙏🏾

Great video of the Summit and it was so nice to meet you there!

I wish the USA would get more choices for air to water heat pumps for space heating in cold climates.

Really enjoyed hearing about geothermal heat pump water heaters, and I disagree with undersized geothermal heat pumps, I have never ran supplementary or backup heat In the ten years that I have had my system and that's the way I like it

I'm curious about the use of the term "Induction" related to the ground-source heat pump. What does that mean?

Excellent

Good information. I like how the neighborhood has various floorplans and looks. The area looks inviting and not the dreaded cookie cutter designs that look dated within a decade. They proved an efficient design and home doesn't need to cost seven figures.

Awesome info! Colorado is one of the nation leaders in green energy. Hoping we can bring Arizona and Texas along as well.

Excellent video Katha ,very informative interview !!!😊

Good video.

Great information, thanks for creating & sharing this! Perhaps in the US, net zero building practices could be focused on multi-family buildings, apartments & businesses. This would spread out the adoption costs to more people and reduce the ROI time.

Net Zero is the opposite of traditional environmental responsibility. It is the complete greenwashing of corporate and government corruption behind a sophisticated ideological scheme that is narrowing our vision and limiting out ability to truly deal with the real problems: environment destruction and toxification. Your Carbon Footprint was a phrase developed by BP and the adopted by the bankers and global finance backing the UN climate agenda.

I'm a fan of the channel. Interested in changing from natural gas forced air heat/portable air conditioner(Hisense) to electrical heat pump system. So far it's cost prohibitive. Also want to be able to survive off-grid with solar panels/storage batteries because we live in western Washington state where we are due to have a 9-point-on the Richter Scale earthquake. BTW, the audio in all your videos has a problem reproducing S's. Everytime you say a word with an S in it, it breaks up. Are you recording your audio at 44.1 khz or 48 khz? If you are, consider getting a De-esser plugin (or hardware De-esser) for audio recording or post-processing. Don't get the cheapest one, you get what you pay for. It is difficult to reproduce S's cleanly. Especially female vocal. Perhaps a better quality microphone would help? Don't mean to criticize, just trying to be helpful. I've fought the S's problem for years recording vocalists/bands.

This is an excellent commercial for alternate energy schemes but hardly a balanced systems engineering approach to decision making. For instance, should an 83 year old person "invest" in a systems with high up front costs? Its likely that the resale value of the house would not recover the investment. Second, and the most glaring omission is the projected life cycle costs. These ignore the very low reliability of various components and the necessary maintenance and replacement over the entire life cycle. It would be a mistake to ignore the downward spiral of compressor reliability and the switch to hazardous propane as a refrigerant that is lower in efficiency. The presentation suggests that once you pay off the initial cost that you are cost free thereafter. This is of course a marketing mind game that has been used many times in history so hopefully those considering investing will be more careful in evaluating their situation. Finally, consider obsolescence due to EPA mandates. In ten years your system may be declared irreparable. This is not a small risk.

looks good

Great video, Katha ! I really appreciate what you are doing! P.s. you are looking happy and healthy, and that is fantastic 😀

Video starts at 4:05 Video assumes what avg air temps are in your location so you need to check to make relevant to you. Summary: Air source heat pumos are equally efficient at +10C and at +4C ground source starts more efficient and the lower the outside air gets the better they are. No sources are provided... so... if you are trying to size/design a system there not even starting point to compare these numbers. P.S. For the love of god... BLINK WOMAN!

Screw spray foam. It's a pain in the butt if you have to work around it (electrical, plumbing, etc) Everyone cuts it and never replaces it. If you have a leak in your roof how the heck will you know when spray foam is so sealed the water runs down and drips somewhere else

Geothermal heat pumps are common in Sweden where 45% of the electricity comes from cheap hydropower. Air-to-air heat pumps have not been documented to commonly save fueling costs over natural gas furnaces in the USA. Heat pumps pull significant amounts electricity and they do that when the electric grid is already being heavy stressed by cold weather.

There is no mechanism that would allow greenhouse gas behavior to cause global warming. Global warming was officially stated at 1.1°C in 1991 and 1.06°C in 2022. The back of the United Nation's IPCC science report states it took its greenhouse gas samples at 20,000 meters altitude where it is common high school level knowledge there is no greenhouse radiant energy. This is typical practice for deceptive marketing to state legal data transparency protecting the perpetrators from fraud prosecution. Earth's greenhouse effect is frequently used as a primary example to high school students of a system always in saturation from the strong greenhouse gas water vapor absorbing all the greenhouse radiant energy from the earth with greenhouse gases within 20 meters of the surface that is all around us everyday and can't have its overall effect changed. There is no further greenhouse radiant energy to interact with greenhouse gases. At 1% average tropospheric water vapor over 99% of earth’s greenhouse effect is from water vapor. Water vapor would hold earth's greenhouse effect in saturation if it were the only greenhouse gas in the atmosphere. Arctic warming is taking place with the proving mechanism being warm Atlantic Ocean waters migrating deeper and more frequently into the Arctic Ocean warming it and the region. That warmer water is causing a few weeks less of reflective snow and ice coverage resulting in more solar heat gain to the Arctic region surface. Atmospheric CO2 levels of 1200 ppm about three times what they are today would greatly invigorate C3 plants the majority of plant life on earth greatly greening the planet. 0.4% of the atmosphere is CO2 and on average 1% is H20 water vapor. (1% H20)/(0.4% CO2) = 25. Water vapor is 25 times more present in the atmosphere on average than CO2. Water vapor has an CO2e of 18, 18 X 25 = 450 CO2e total for water vapor to 1 CO2e for CO2. The Earth’s oceans have 3-1/2 million sea floor volcanic vents warming the water and changing it’s chemistry that have not been systematically accounted for.

Yeah, building codes in North America don't seem to be pointed towards efficiency or innovation :(

In addition to saving money in the long run, air sealing and adding insulation to home will make it more comfortable. You will feel it every day.

Great Video. We are currently using almost all these insulation types except cellulose. Good to know. Insulation makes a huge savings on cooling and heating a home.