Glenn Mathewson

Sometimes troubleshooting involves preventing trouble from arising in the first place, such as making sure that sufficient combustion air is provided for fuel-burning appliances. Without enough oxygen, combustion will be incomplete and as a result, not only will appliances run inefficiently, but dangerous carbon monoxide will be produced instead of carbon dioxide.

The furnace and water heater are often installed in the middle of an unfinished basement, with access to the entire volume of air in the basement for combustion. Once a basement is finished, however, the furnace and water heater are usually isolated in a small mechanical or utility room, which limits the available combustion air and requires a...

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