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![]() I know you're trying to set this up on the cheap, but because the building is separate, I would still run a glycol mix through the system.
Even though you have a separate heat source, if the electricity goes out in below freezing temps.... ![]() The unknown is what effect the glycol will have on PEX made for domestic water supply. Also, I wasn't promoting solar in my previous post ![]() There are other calculators if you google for "heat loss calculator" or "BTU loss calculator". Also, the crimping tools (rent or purchase) and hardware for a pressure test are all available at HD. Mitch |