how does the factory natural gas boiler adjust the most economical

Boiler Efficiency | CleanBoiler.org

The number of boiler passes simply represents the number of times the hot combustion gas travels across the boiler (heat exchanger). A boiler with two passes provides two opportunities for the hot gasses to exchange heat to the water in the boiler. A 4-pass

Learn More

Gas-Fired Boilers and Furnaces | Department of Energy

Gas-Fired Boilers and Furnaces. A residential natural gas meter. Gas boilers and furnaces can be fueled by either natural gas or propane with simple modifications accounting for the different characteristics of the fuels. Propane is usually more expensive as a fuel but is available throughout the United States.

Learn More

The cheapest most efficient way to heat your home this ...

Dec 21 2020 · Boiler settings . Most traditional central heating systems are controlled by your boiler. The temperature you set your boiler to is the temperature at which it heats water. So the key here is to set the temperature no higher than you need. For your heating the ideal temperature setting is around 70°C. And for your hot water its 60°C.

Learn More