He was sharing a link to his own site - commonly known as advertising.
Your solar murals are cute but useless for energy collection - heat transfer requires surface area which the copper tubes inside your windows don't provide enough of.
Looks nice but they are useless.
Your solar murals are cute but useless for energy collection - heat transfer requires surface area which the copper tubes inside your windows don't provide enough of.
Looks nice but they are useless.
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