An 80% AFUE or 95.1% AFUE fixed-speed, two-stage gas furnace offers high-quality temperature control and comfortable indoor air. A furnace that operates in two-stages has two different capacities – low and high. When your furnace operates at the lower capacity for a long period of time it is able to mix the temperature of your air better and is not as loud. When you have a furnace that operates at only one capacity, 100% capacity, it can go through loud on/off cycles. At the lower capacity, your furnace is not as loud.
The difference between the 80% AFUE furnace and the 95.1% AFUE furnace is that one is more efficient than the other. Furnace efficiency is indicated by AFUE – the annual fuel utilization efficiency. This percentage indicates how much of the fuel put into your furnace is converted into useful heating power.
If you are looking for basic, powerful heating power and you are on a tight budget, choose from our fixed-speed, single-stage gas furnaces in a range of efficiencies. If you live in an area that has a long heating season you should select a unit that reaches high-efficiency levels – like the 95% AFUE unit. But if you live in an area that doesn’t have an intense cooling season, an 80% AFUE system can meet your needs more than adequately. You can also pair one of these furnaces with a heat pump and create a dual-fuel system. This is a particularly good option if you are looking to address some of your heating needs with a heat pump for parts of the need, but you still need the powerful heating associated with a gas furnace. Regardless of your installation requirements or budget, there is a gas furnace available for your home.