Dual Fuel Systems Make Heating Even More Efficient. You want to keep your home comfortable without outrageous energy costs, which is why you have high efficiency HVAC products. What you may not have realized is that some of these products are not only energy efficient when operating themselves, but they can be combined to produce even greater efficiency to your family. At Twin Air LLC in Manassas, we offer furnaces that work with heat pumps to create a dual fuel system. Combining a gas furnace with an electric heat pump enables you to use two different fuel types: gas and electricity. Once the temperature becomes too cold for your heat pump to work efficiently (usually around 32 degrees Fahrenheit), the furnace provides the additional power you need to stay comfy. That means you’re only using gas fuel when it’s necessary. Dual fuel systems rotate between the two types of heat, which optimizes energy uses and decreases heating costs. That’s a solution we like to see. Browse our gas furnace and heat pump offerings to learn more about the systems individually. Give Twin Air LLC a call at 703-754-1062 or make an appointment to discuss adding dual fuel capabilities to your house. We’re in Manassas – just down the road and available to help.