DIY Natural HVAC

So there's not really an architecture board, but this idea is sort of DIY.

The concept is make a basement by digging up some dirt for foundation and part of the basement, but then use the dirt to cover the rest of the basement so it doesn't need to be dug out all the way. Saving on excavation costs. Then you just build a normal first floor on top and make some fan circulate the air between the basement and the first floor. This way you have natural DIY geothermal HVAC and the basement won't get moist enough for mold to grow.

Building codes wise it's nothing special. Just a normal basement and normal rest of the house.

Other tips are to use hempcrete on the first floor to absorb moisture from the basement air and also as insulation.

Maybe make the roof with stone covered metal so it lasts forever too.

If you're far from municipalities you can probably get away with no sewer and just compost that stuff and wash your everything with steam.

Instead of wiring in the house too you can just get a battery storage system and use solar externally to charge it in the yard.

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  1. 9 months ago
    Anonymous

    stupid white beds they shouldn't be the default, if it ain't red it ain't no bed

    • 9 months ago
      Anonymous

      red sheep are pretty scarce and I did it in survival to see how many mc days it would take since that probably means the work is worth 20k per day.

      took three days so the house is probably worth 60k

      • 9 months ago
        Anonymous

        Just grab some roses and use red dye?

        • 9 months ago
          Anonymous

          >roses
          Do we tell him?

      • 9 months ago
        Anonymous

        >anon why did this project go over budget $50k?
        >i don't know I did it in mc in less than 3 days
        insanely based moron

    • 9 months ago
      Anonymous

      amen

  2. 9 months ago
    Anonymous

    Your idea has been tested and we'll documented. Here are some thoughts.
    >you need an airtight home, yes, but you also need air to change with the outside or you will get stale air and mold. To deal with this you get an air exchanger that heats/cools the incoming air with the exhausted air. This is essential.
    >You want to build a single story home bermed into the dirt.
    >IF you are in the northern hemisphere, it will face south with lots of windows on the south wall for sun penetration, but awnings to block the sun in the summer (when it's high in the sky) but able to let sun in during the winter (when it's low in the sky)
    >COOLING- Pipes running in the dirt under your frost line will be a steady temperature, and with appropriate vents in the right spots (up high) will naturally push hot air out and pull cool air from these pipes in the ground entering the home at the lowest point
    >HEATING okay your house is burried, has a concrete floor and thick insulated walls hopefully of a thermal mass material like stone or concrete. You now have a battery, since it's mostly air tight, it will hold heat. A masonry mass heater will provide your once every 12-24 hour quick burn to charge the battery and the solar entering you south facing walls will also charge the home.

    There, you have a very easy to maintain, heat and cool home built.

    • 9 months ago
      Anonymous

      Nah that's an earthship. I'm saying build a full basement to just completely rely on the geothermal and not have to get anything weird building codes wise.

      The exchanger is a good point and necessary yes.

      Pipes anywhere and it's over budget. This is basically a two story shed.

      • 9 months ago
        Anonymous

        no, earthshits are made out of garbage. The concepts I present are universal and timeless, in every country we see a similar approach to design historically and it's been perfected using modern construction methods.

        >pipes anywhere and its over budget
        what? its like, the cheapest part of any job.

        • 9 months ago
          Anonymous

          Sure I mean the awning and stuff but then you only have one story and have to make all that detailed stuff no cheap contractor knows how to do.

          • 9 months ago
            Anonymous

            >no cheap contractor
            You do know where you are, right?

          • 9 months ago
            Anonymous

            good lord. As a general commentary of PrepHole why do people expect their bright idea has been overlooked by countless experts in the field. Adding a second floor will most likely be harder to manage, especially with bedrooms which typically go on the top floor - and will be hot af instead of cold.

            Beyond this, the diagram I posted has a higher material cost, but is infinitely easier than say, typical stick construction, which has many many layers of different elements working together that must be installed properly to hit efficiency targets.

            So, follow simple rules that are existing and you wont have a hard time. Reinvent the wheel and you get to re-experience the shortcomings of other peoples designs.

            • 9 months ago
              Anonymous

              First off, this thread is a waste of time because you'll never attempt any of this.
              Second, none of this will keep the house comfortable. The fan won't be able to circulate air evenly or everywhere. Adding ducts will cause a sweating issue. Adding any kind of pipes requires a transfer medium, a pump, a blower and ductwork, and a water coil. None of your ideas will effectively control humidity. Hempcrete isn't meant for moisture control, and any moisture it absorbs would need to be removed.
              You want off-the-grid "natural" HVAC? Wood fired boiler for heat and hot water, plant trees around house to,keep it in the shade and run fans for cooling. Or put solar panels up and use them to power a geothermal HVAC unit.

              >Reinvent the wheel and you get to re-experience the shortcomings of other peoples designs.
              If OPs idea was any good people would already be doing it.

        • 9 months ago
          Anonymous

          i never go this
          godamm hippie communist
          earth ship design is great for the weather
          but made out of trash tires that release gas when heated in a area that gets to 120

          real earth ship
          would be made of brick and wood glass

          it is a weird way of people just not wanting work.

          if you make any house in any place, you must work for the capital

          insulation is great for weather

          • 9 months ago
            Anonymous

            I agree, like its great to reduce your footprint etc. but using labour intensive tire walls is silly when you can put up some concrete + butresses inside (which most codes would need done anyways).

            That said so many good design ideas came out of the earthship movement, I do think they've done more good than bad.
            >geo cooling pipes
            >south glazed garden area
            >grey water use
            >bedrooms tucked in the back

            My main concern with their laissaiz fare methods is Radon, nobody thinks about radon ffs, if you live in the north east you must be vapor blocked from ground gases or enjoy your cancer. When I finished my basement we cut the concrete flat and dumped a good thick coat of sealer to help mitigate, but ideally a proper ventilation layer under your foundations is needed. No.2 cause of lung cancer in my area, no code rules to mitigate it.

            • 9 months ago
              Anonymous

              Grey water use is MUCH older than that movement, ditto south facing greenhouses. Old homes used these long before modern climate control and wastewater handling.

              For example my 1965 home runs gray water to a clump of very healthy shrubs thus keeping it out of the septic tank. Standard rural practice in many areas since forever.

  3. 9 months ago
    Anonymous

    Did you really use Minecraft to demostrate your concept?

  4. 9 months ago
    Anonymous

    Lol. You allmost just explained my house. Roof asbestos reinforced congrete, foundation rocks, own wells for sewage and gray water.

  5. 9 months ago
    Anonymous

    Just lay 200+ meters of PE pipe 2+ meters deep. Aim to heat load near 5-10 watt per meter. Tractor with trench digging attachment could do it pretty efficiently. Bonus points for putting it under bushes or trees.
    Then just pump water through a radiant heating floors and underground loop. Could also use a water-air heat exchanger after a heat recovery unit.

  6. 9 months ago
    Anonymous

    google "walk out basement"

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