Estimates may be low, however, because CO gas is tasteless, colorless, and odorless and thus hard to detect. The symptoms of CO poisoning -- fatigue, headaches, dizzy spells and nausea -- resemble those of the flu and many other common ailments. As a result, CO poisoning is easily misdiagnosed.

Finally, health authorities and the American public are getting the message. Last year about 4 million homeowners bought carbon monoxide (CO) detectors, according to industry authorities. About 6 million homes, 10% of the total, now are equipped with these potential life-saving devices.

Do you have yours yet? If not, give us a call and one of our professionally trained service technicians will provide a top-notch model and install it where it will offer maximum protection. Remember, what you can't see can definitely kill you.