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.
Carbon monoxide poisoning is a potentially fatal illness that occurs when people breathe in carbon monoxide. All sorts of sources can release carbon monoxide, including cars, trucks, small gasoline engines (like lawnmowers), stoves, lanterns, furnaces, grills, gas ranges, water heaters and clothes dryers. The risk of poisoning is especially high when equipment is used in an enclosed place and ventilation is poor.