How a South American Creator Ditched AC by Building a Geothermal Cooling System Under His House
A content creator from South America, with a dogged determination akin to digging a well with a needle, spent a full four years carving out massive trenches in his backyard. His neighbors assumed he was laying a sewer or infrastructure line; however, he was actually laying the groundwork for a passive cooling system that could potentially revolutionize the world. Initiated in 2022 and fully completed by 2026, this system managed to chill the rooms in his house to an icy coolness, all without the need for a compressor, cooling gas, or an outdoor motor.
The brilliance of this project rests on a simple physical truth: the temperature beneath the ground, between 1.5 to 3 meters deep, remains unaffected by the weather conditions on the surface and stays constant at all times.
While the surface sizzles in the summer, the underground remains cool; in contrast, the opposite temperature prevails in the winter. The entrepreneur drew inspiration from an ancient geothermal cooling method, known in the literature as the 'Canadian Well' or 'Provençal Well.' By channeling the hot air outside through pipes buried 30 to 50 meters beneath the house, he enabled the soil to absorb the heat in the air, functioning like a natural battery. Consequently, by the time the air travels from the underground to the house, it has cooled down to a degree that can be expressed in numerical terms compared to the outside temperature.
While traditional air conditioners operate with high electricity-consuming compressors and environmentally harmful gases, none of these are required in this system.
The only requirement for the system to circulate air is a small, low-wattage fan that consumes as much energy as a standard light bulb. In fact, on some days, air reaches the house entirely through a natural air current method (convection), without any need for electrical power. This effectively prevents any sudden increases in the electricity bill.
Currently, the system serves the children's rooms in the house. According to the content creator, it has completely eliminated the need for traditional air conditioning in these areas.
The most challenging aspect of setting up this system lies in the logistics and labor process.
Indeed, it took a full four years for the amateur builder to complete this system. The pipes laid underground had to be placed with a precise slope between 1% and 3% to prevent moisture and mold. Moreover, every connection point required meticulous insulation against groundwater and soil gases.
Experts point out that this fantastic technology, which brings buildings closer to "net zero energy" usage, has not yet received its due recognition in the modern construction industry. They attribute this to performance uncertainties and the unfamiliarity of engineers with the system.
Once established, this system, which operates at almost zero cost, is a potential contender to be the climate control technology of the future.
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