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Propane boilers can offer efficiency levels of up to 96

Propane boilers can offer efficiency levels of up to 96 percent afue (annual fuel utilization efficiency, a measure of heating efficiency) — levels that oil just can't match they use condensing and modulating technologies to extract more heat per unit of fuel and set the heating level at just the right temperature. When designing a replacement low pressure steam boiler, it should be sized according.

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