Inexpensive Home Building

Cut through the jargon and nonsense of home building and house construction by starting from zero dollars and trying to figure best-value bang-for-your-buck when choosing construction methods or construction materials. My research might answer some of your questions and at other times perhaps you have the knowledge or experience to post the answers to my questions and thereby help others too. The goal is an affordable and sustainable home for all.

Sunday, October 15, 2006

Air Ventilation Via Passive Geothermal Convection?

First you need to insulate your home and then you then you need to poke holes so your home can breathe. The bad part is that you spent much effort to heat (or cool) the air and then you trade it for a temperature that you dislike and start over again. You can use a heat exchanger to have the exiting air moderate the incoming air but your incoming air is still starting at an extreme temperature (very cold or very hot). I wonder if underground soil is sufficiently aerated to combine geothermal and French drain techniques to gain 50-degree fresh air year-round: Run a hose from the home, below the frost line, perforated, covered in mesh, run through gravel, and then back home. Perhaps that would provide enough heating-ventilation-air-conditioning (HVAC) via passive convention (or kickstarted by a small fan). One source suggested this but I wonder about water or mildew problems. Perhaps a solid air-intake tube run below the frost line to the surface would suffice as a passive heat exchanger to moderate incoming air.

Feel free to drop a comment here to share knowledge on this or any other topic.


At 11:15 AM, Blogger jmy said...

Are there any examples ?

At 11:17 AM, Blogger jmy said...

Are there any real world examples ?

At 6:20 PM, Blogger J said...


Hello. It's something like this:

Thank you for the question and please visit again.

At 5:16 AM, Blogger pammi said...

Based in Kolkata an Surat “Bardhman” Air turbo is pioneer in manicuring Air ventilator. The company uses Korean Technology for this which make sure the cost is low but the quality us very high as compared to other turbine manufacturer. The turbine air ventilator manufacturer company assures you of hi quality products.

At 4:58 AM, Anonymous marijina said...

Good information about ventilation system, Using good quality bathroom ventilation fans ensures that you get a bathroom that is free from moisture and stinky smells. Thanks for sharing this.
Air ventilation

At 4:38 PM, Anonymous wade smith said...

OK - I have been researching geo-thermal ventilation systems - quite a few out there. JUst google it. Two to consider Rehau makes proper underground ducts. Check out for another. The idea is to change the temperature of air by doing a heat exchange with the earth. Easy to understand, easy to do.


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