Dear Umbra, I would like to change to solar heating for providing some of our electricity requirements, particularly for hot water. Can you advise me how to go about it? Leela Pienaar Grahamstown, South Africa Dearest Leela, I notice you're in South Africa. I can talk about solar equipment as found in the U.S., and perhaps these general thoughts will be useful to you. Since the web is worldwide, I was able to see at least the signs of government support for a solar water-heater campaign in South Africa. Certainly we have all reason to believe that it is sunny …
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