The adjustments to convert net income to cash flow from operations generally. involve (1) adding the amount by which an expense exceeds the related cash expenditure for the period (for deprecia-. tion, the entire amount), (2) subtracting the amount by which a revenue exceeds the related cash receipt for the period.
Gas Furnaces: Cracked Heat Exchangers. The most common reason for a natural gas furnace to leak carbon monoxide is from a crack in the heat exchanger. The heat exchanger is the metal wall or tubing that is heated up when the burners are ignited.
The Dangers of Carbon Monoxide Poisoning from a Furnace. Your furnace is a heating system that produces carbon monoxide (CO), a silent and harmful gas that can be fatal. You need to be diligent about regular furnace maintenance in order to keep your family safe from the dangers of carbon monoxide poisoning. Your unit needs to remain efficient and safe at all times.