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Group Description

A place to exchange plans and ideas for Hahsa heating systems. Unique sytems with multi use functions for the home, outbuildings and shop.

Typically, a HAHSA is a concrete block building with a firebox, a grid of pipe as a heat exchanger, and tons of sand. There are a couple of versions, and many homegrown spinoffs, all on topic here.

Group Information

  • 923
  • Energy
  • Mar 14, 2001
  • English

Group Settings

  • This is a public group.
  • Attachments are not permitted.
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  • Listed in Yahoo Groups directory.
  • Membership does not require approval.
  • Messages from new members require approval.
  • All members can post messages.

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