Professional installation and annual maintenance by Seider’s certified technicians ensure that your heating system is venting properly, but there are other sources of carbon monoxide that could become dangerous. CO can come from fuel-burning appliances such as water heaters, ovens, and fireplaces, so it’s always a good idea to have a CO alarm in your home. We can install one in no time at all, and it’s your best defense against this colorless, tasteless, odorless toxic gas.