Marta and Jim Kowalski's hot tub heater broke in October 2022. They called a technician. He couldn't explain why the water was still 102 degrees. The couple admitted they'd never seen their energy bill spike when running the tub. Twenty years, not once. The tech ran a thermal camera along the concrete pad and found a heat signature three feet below the surface. A geologist from Colorado State confirmed it: a shallow geothermal vent, pushing 106-degree water through fractured basalt directly beneath the patio. The mineral rights alone were appraised at $310,000. The house had cost them $187,000 in 2003. Jim said he always thought they just bought a really good heater.
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- Twitch Hot Tub
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