Natural Gas Boilers - Natural Gas Boilers at Wayfair

the gas price seems very high if mains gas (4.1p/kWh average now), but I'm guessing it is probably calor gas. if it is mains natural gas what do you mean by unit in this context do you mean 1 kWh, or a specified volume of gas, it is high for a kWh but not for 100 cubic feet for example. If it is calor gas it is still high, cost price of the gas

90% AFUE Gas-Fired Condensing Hot Water Boiler

High efficiency, gas fired water boiler The GWB9-050IH-3 boiler offers an AFUE rating of 90%, which means it converts a full 90% of fuel into usable heat. And it delivers warmth quickly with a cast aluminum heat exchanger that transfers heat three times faster than conventional cast iron.

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GWB9-050IH-3, 90% AFUE, Gas-Fired Water Boiler, 50,000

High efficiency, gas fired water boiler The GWB9-100IH-3 boiler offers an AFUE rating of 90%, which means it converts a full 90% of fuel into usable heat. And it delivers warmth quickly with a cast aluminum heat exchanger that transfers heat three times faster than conventional cast iron.

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Q90-100 100 90 78 90.0% (1) 1000 Btuhlr (British Thermal Units Per Hour) (2) Heating Capacity and AFUE (Annual Fuel Utilization Efficiency) are based on DOE (Department of Energy) test prooedures. (3) Net AHA I Ratings based on piping and pickup allowance of 1. 15. Contact Technical Support befO<e selecting boiler for installations having unusual