Dual Fuel Systems Make Heating Even More Efficient. Several of the fuel systems we carry at Custom Air Systems Inc in Indian River County boost your home’s efficiency more when they work in partnership with another Lennox® system than they by themselves. This is the case with for our dual fuel capacity gas furnaces and heat pumps, which can work together to deliver higher efficiency and greater comfort for your family. Both systems operate efficiently by themselves, but when you combine the gas furnace and the heat pump, you’re taking advantage of both gas and electric fuel. The two systems will alternate between electric or gas heat depending on your preferred indoor air temperature and the operating efficiency of each unit. This works the same way as a hybrid car, alternating between electric power at low speed and gas power with increased demand for maximum MPG. You’ll be able to hone your energy use, and you could lower your heating budget. Typically the electric heat is used until the outdoor temperatures fall to about 32 degrees Fahrenheit before switching to gas. Not only will you feel comfortable, but you can feel good about the efficiency of your dual fuel systems, too. Learn more about the details of each of our gas furnaces and heat pumps here on our website, or give us a call at 772-571-1080. Custom Air Systems Inc is located in Indian River County, so you can easily make an appointment to have us do an in-home consultation and show you how a dual fuel system could work for your home.