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This 'super-intelligent' water heater learns your habits to save you money — and the government will give you $1,700 to upgrade
A new kind of water heater could help you save big money on your energy bills, and the U.S. government will help you pay for ...
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Best Solar Furnace, Electric, PV Panels Greenhouse Heaters and How to Buy One
Think of solar greenhouse heaters as a way to supplement existing heating systems. They're out there, but some assembly may ...