Why would a normally functioning furnace or water heater suddenly start to produce carbon monoxide?
A furnace or water heater would not suddenly start to produce carbon monoxide, but it may start to let it into your home. Possible reasons for this are that the heat exchanger has rusted or corroded, or the house has settled a bit and shifted. It is also possible that the chimney has developed an obstruction from a bird’s nest, debris, or some other occurrence over the summer. Is there any way to know that you have carbon monoxide coming in? The best way is to get several good detectors and install and use them according to instructions. If you notice a heating appliance that makes a funny noise, starts making more noise than usual, if the furnace runs all the time, or if you smell some of the other combustion by-products, it’s a good idea to get it checked by a professional. Disclaimer and Reproduction Information: Information in NASD does not represent NIOSH policy. Information included in NASD appears by permission of the author and/or copyright holder.
