When you buy a new home, you probably pay attention to the energy efficiency of your insulation. What you might not have realized is that with this efficiency comes the risk of limited free air exchange in your home. This means that your home seals in as much heat as possible, saving energy but restricting the flow of air inside the house. As a result, you might have indoor air quality problems related to carbon monoxide or other dangerous gases. One way to safeguard against this possibly dangerous air is to use a gas detector. Gas detectors can alert you when gas levels rise in indoor air. Some units detect natural or liquid gas, while others are made to sense carbon monoxide. Many home security companies can provide you with a gas detector for your home, so call one in your area for more information on units and the types of gas they can detect.