April 6, 2025

42 thoughts on “My Biggest Regret Building a Net Zero Home

  1. Well. if it was me I would have definitely avoid the heat pump for water heating. Instead a nice solar water heater is the best eco friendly solution. As far as heating since you are building the home from ground up big windows on south and a nice dark concrete floor should be fine. As far as cooling, I think it you just buried underground (similar to the geothermal heat pump) a pipe were air can pass by, it should come up cooler.

  2. Hi Matt, love your work. My question is, do we want a green house that is effective or a house full of electrical an mecanical support do temper our house. I do think we can have efficient house without too much of mecanical support. I built my self a 1500sqft log house dove and tail solar passive house, facing south, big windows… only have a radiant floor to eat and don't need any air conditionner, the concrete floor those do the work. So all year long the temparature stays around 20, In winter time it can get down to -30. The more stuff you need to build our house the more it cost to nature and she is the one we need not to forget and protect. We need to think about the carbon foot print.

  3. these white privileged folks, have all the money to buy new technology, alas but still is not sufficient.
    They worship technology as being a fix… to all climate change, global warming, flood, fire and ocean rise.
    What they worship also is energy, nothing about ecology nor the living planet.

  4. We built our version of energy saving home seven years ago . Icf walls , concrete floors with radiant floor heat , ground source heat pump. Really happy. Lastly we added 14 kw ground mounted solar. I did most the work.

  5. Living in a flat now, but someday in future (~15 years) I want to build my home. I think I will go with passive home. In Poland it is not common to build house with wood, most houses are from bricks. I think I will also go with my own solar panels.

  6. Hi Matt. Thank you for this video. I really appreciate your insight and honesty. I live in central Texas and decided to build a Netzo home that can adapt to the recent drought and hotter summers we had here, which required more AC runtime. I do feel things won’t get better until we changed and live more in balance with our planet. The issue that I am running into is the HOA not allowing modular build homes as the perception I think is that it is similar to a manufactured mobile home. Do you have suggestions for me to empower and educate the folks in HOA and hopefully, they can allow the build?

  7. HEY!? SHOULD A HOME OR HOUSE B OF [ORGANIC DESIGN] ]A POOR EDUCATION WOULD ARGUE DISTINCTION] HOWEVER,SUCH, HAS TO FUNCTION ON THE PARAMETERS DICTATED BY IT'S DESIGN PRINCIPLES & AS DISTINGUISHED! AN ORGANICALLY DESIGNED HOUSE TO MY UNDERSTANDING SHARES IT'S SURROUNDINGS!! BUT OWNS THE GROUND!! ALL BASED ON THE INTEGRITY OF AGAIN! CLEAR DESIGN PRINCIPLES! ENCOURAGING A SIMPLICITY OF COMPLEXITY OF SORTS!! SO IN THIS MANNER OF APPROACH IS GAURANTEED A NOT TO CREATE!! BY ESTABLISHED BARRIER OF DISTINCTION A DISFUNCTIONALY AESTHETIC OFFENCE TO ALL!! THE HUMAN ANIMAL SENSES!!!. & AN INSULT!! TO IT'S GROUND…

  8. I bought a home that was built in 1975. While I'm not going to obsess over full net-zero, i am working hard to retrofit it to be as efficient as possible.

    First, replacing the old gas appliances with heat pump electric. Next, I'll be encapsulating the crawl space and upgrading the insulation throughout the house. Eventually, ill add a smart breaker panel, battery backups, and solar

  9. "Solar will provide 100% of our global energy needs by 2027." – Ray Kurzweil

    For this to be true, solar costs would have to come down a lot but Ray is never wrong so I tell everyone to just wait a few years.

  10. Air tight houses can have moisture problems. It is the number one issue we see in passive houses is moisture issues. Erv needs to suck from problem areas like kitchen, bathrooms, and basements. Also rim joist pockets need breathable insulation. Especially with icf walls and no where for the moisture from the masonry to go. Masonry loves to wick moisture. And how does it dry out in an icf wall? Besides at rim joist pocket. Then thermal breaks around windows. This stops cold and moisture going into wood around windows. It's why you should use mineral wool or spray foam in bays next to windows or doors.

  11. The term 'Net Zero' is pure nonsense since CO2 was produced during all the manufacturing processes of everything we use to set up 'Sustainable' houses. Unless we all stop breathing there will never be 'Net Zero'.
    However, having some sort of reduced home running costs, energy sovereignty and long term security in the event of a grid-down situation is always a great investment.
    Good one, man.

  12. having thought about batteries I decided that I would prefer to go with 2 times the kwh that would be put out by the solar array. Batteries have dropped dramatically in the last year When I say dramatically I am talking about $520 for 10lwh

  13. Hi Matt,

    I’m a big fan of your videos. It is my desire to understand the best way to save and conserve energy.

    I know a few scientists who have told me that solar panels in the northeast are carbon positive because they are made in China using coal furnaces. Do you have any insight into this claim?
    And is there any way to quantify whether to calculate this.

    Also, is there a course or school where I can learn how to do this kind of research and analysis

    Thank You

    Steve Guiosky

  14. Hope you go where bezos, Zuckerberg, buffet and gates end up… And we all know where is that, you, them and your agenda.

    Want to know one part about all that trendy bandwagon wording that you sooo love saying out loud as if you understand it? Net zero, net zero, net zero…

    Want to know what also includes the net zero? What you haven't heard, haven't been told because it's hard to swallow and you wouldn't (or maybe would) go ahead with , well, here it is. Part of net zero is also to adjust (nice word, isn't it) the acceptable number of citizens of this planet. A number that's acceptable and sustainable for the balance and existence of this planet on the long run. And our supreme overlords believe that figure is around 500 million…. So, ummm, what do we do with the rest if they're ummm, releasing too much carbon, which is extremely damaging to our planet? We're trying to turn everyone vegan right now as we need to reduce the amount of pigs/cows because they simply just fart too much, it's uncontrollable and bad! For the planet, but so do humans… Welcome to net zero, where the plan is for you to become a zero.

  15. I would like to build a Passive home someday, but your cost estimate was misleading. The Passive house isn’t 16% more expensive it is almost 100% more expensive, $84 a SqFt vs $159 SqFt.
    Your video title is also pretty “clickbaity”, and you didn’t give very much information about your passive house build, or even a passive house in general, considering the length of this video.

  16. Great post! My spouse and I are halfway through what should be a near-net-zero build. We looked at prefabricating part or all of the home, and the cost compared to traditional build techniques was significantly higher. We were quoted ~$100/sqft for framing, insulation and air sealing [not including doors and windows]. Note that we're in soiuthern BC, Canada, and local labour rates for apprentice carpenters are bumping into the $40/hr range. Regardless, the prefab route was a bit rich for us, even though it would shave months off our build time. Instead, we're spending around $60/sqft on a standard build with R40 walls and R60 roof, and I'm air sealing the &%$* out of the house myself with tape and sealant.
    I'm guessing that the difference in cost between prefab and traditional building techniques is not as significant as in our neck of the woods. Can you share what your $/sqft is going to be on the new house? Cheers!

  17. I'm concerned about my wallet, if it helps the environment fantastic bonus, but I'm just being brutally honest.
    I've gone 'renewables' because it's better for my bank balance, simple.

  18. There's another reason for going net zero … off grid builds. In which case you can't just achieve net zero over the course of the year. Every week in the year has to achieve net zero, because battery banks leak over time so producing excess electricity in summer in order to heat your house with that electricity in winter is not a viable solution. You have to produce your winter heating energy in winter.

  19. Interested in building a passive home but scared of cold floors while walking around barefoot (big no no). What’s the best/energy efficient floor hearting system?

  20. Hi Matt, This belated comment is more of a question. Whilst a low leakage home is great for energy efficiency, my concern for you is what, if any, impact is happening to your health from any toxic off-gassing from modern building materials, systems and glues etc.? Phil

  21. As I guy in the HVAC field this build gives me red flags. I get somebody wants to be energy efficient, but in my experience the more energy efficient someone tries to be, the more expensive repairs are when a system breaks down. And generally they do right after the warranty expires. And then because of the sophistication of the equipment parts tend to be hard to come by or are backordered for multiple months. Give us an update after a few years.

  22. I recently built a 1800 sq. ft. house in central NC. 2×6 walls, R3 Zip, Marvin windows. No solar or energy efficient appliances except induction cooktop. Old school top loader washer and resistance dryer. 15 SEER HVAC, sealed crawlspace.. My electric bill is $100 average. The house is very comfortable (mainly due to the excellent ductwork and HVAC design) With the rates here of about $0.10 per KWH, I can't imagine I would ever payback all the expensive nifty gadgets that your house contains if I include maintenance, repair and replacement costs.. Pretty cool house that you have though.

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