Quote:
Originally Posted by Coyote X
But I did manage to find a potentially endless supply of 55 gallon barrels for free So now the plan is dig
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NOW there is a good heat transfer.
If you got a heat pump window unit and encased the condenser (outside cooling fins) in water pumped through these barrels then you would have an excellent heater as well as a very cool/ efficient A/C. Just wire the pump on a contact or with the compressor. if the system is closed you can get away with a very small pump.