These appliances burn fuels — typically gas, both natural and
liquefied petroleum; kerosene; oil; coal; and wood. Under
certain conditions, these appliances can produce CO. However,
with proper installation and maintenance, they are safe to use.
CO is a colorless, odorless gas. The initial symptoms of CO
poisoning are similar to flu, and include headache, fatigue,
nausea, and dizziness. Exposure to high levels of CO can cause
death. CPSC recommends that the yearly professional inspection
include checking chimneys, flues, and vents for leakage and
blockage by creosote and debris. Leakage through cracks or holes
could cause black stains on the outside of the chimney or flue.
These stains can mean that pollutants are leaking into the
house. In addition, have all vents to furnaces, water heaters,
boilers and other fuel-burning appliances checked to make sure
they are not loose or disconnected. The CPSC also advises
consumers to get appliances inspected for adequate ventilation.
CPSC recommends that every home sho