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Heating & Air Conditioning Booster
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Depending on the season, lowering or raising your thermostat just 4° can cost an additional $35 to $50 per month. Running a booster over the same period costs about 60 cents! Just place over standard ...
Buy for
n/a |
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Build Your Own Solar Heating System
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This book provides step-by-step instructions for the average do-it-yourself home owner or hobbyist for building a fully functional solar heating system capable of pre-heating water for a water heater ...
Buy for
$18.95 |
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