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Investigation shows that conventional gas and oil boilers operate at no greater than 70 percent combustion efficiency, and that classic electric boilers operate at no greater than 75 percent efficiency. In such instances, the …
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Premium Air HVAC » Blog Archive » Lowering Commercial Utility …
Investigation shows that conventional gas and oil boilers operate at no greater than 70 percent combustion efficiency, and that classic electric boilers operate at no greater than 75 percent efficiency. In such instances, the …
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Premium Air HVAC » Blog Archive » Lowering Commercial Utility …