The gas pressure in the chimney needs to be less than atmospheric pressure in the boiler room for gases to leave. This sketch of a barometric damper used on oil fired heating equipment (heating boilers or water heaters) is provided courtesy of Carson Dunlop Associates .Learn More
95%+ AFUE Natural Gas Home Heating Boiler. $400. $550. Indirect Water Heater installed at the same time as a qualifying boiler. $100. $150. 95%+ AFUE Natural Gas Combination Boiler. $500. $675. Smart Thermostat installed by a qualified HVAC contractor. For use with natural gas furnace, natural gas boiler or air source heat pump only. $50. $50Learn More
Jun 01, 2018 · The open combustion system includes the use of a waste heat boiler to recover waste heat that is produced as a result of the reaction of oxygen in the furnace gas duct. On the other hand, in the supressed combustion technique, the combustion gas is collected to be used as fuel through reducing air infiltration and inhibit combustion of the CO Learn More