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Gas-Fired Boilers and Furnaces | Department of Energy

Natural gas supplies depend on having a natural gas distribution system in your area and areas at the end of the pipeline (such as the Northeast) tend to pay higher prices for natural gas. A number of retrofits are possible for gas-fired furnaces and boilers but before pursuing any retrofits you should consider the potential added benefits ...

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Energy Cost Savings Calculator for Commercial Boilers ...

Base model - Values represent a 1000000 Btu/hour gas-fired hot-water boiler operated for 1500 full-load hours per year with a thermal efficiency of 80%. The performance of this standard unit is based on ASHRAE 90.1-2007. Thermal efficiency (E t) - Represents a boiler's energy output divided by energy input as defined by ANSI Z21.13. A boiler's thermal efficiency rating should be used to ...

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