Best Two Stage Gas Furnace

The blower fan can adjust its speed to meet your heating needs efficiency.

Best two stage gas furnace.

The lowest efficiency allowed by law for new gas furnaces is 78 percent and some new models achieve 97 percent. And manufacturers and contractors have been pushing the save you money claim for over 20 years. Gas furnaces are typically more efficient and offer lower fuel costs but are more expensive than oil furnaces up front. One of amana s best furnaces is the amvm97 a modulating two stage furnace that runs at up to 98 percent afue.

But more importantly remember this changed in 2019. Your two stage furnace saves gas because it doesn t dump as much fuel into the heat exchanger when it s only moderately cold outside. Two stage furnaces are much more efficient but probably unnecessary in areas with mild winters. It also features a single speed draft to reduce noise.

The unit is dual fuel capable and can pair with a heat pump to run using electricity. Two stage heating on the other hand uses a two stage gas valve and a variable speed. Our recommendations are the 2 stage carrier infinity 80 and bryant evolution 880ta if you re looking for an 80 furnace. If it s only 40 or 50 degrees out then a two stage furnace will run in the partially open position and only use about 60 of the energy of it s single stage counterparts.

A gas furnace made in the early 1970s typically has an afue of about 65 percent. By far though most two stage furnaces were sold with the older less efficient motors. Like two stage furnaces this helps to increase efficiency on cool but not freezing days. These motors were not new.

All of these furnaces have variable speed blowers for maximum indoor comfort in all seasons. The natural gas furnace has an afue rating of 93 percent and uses two heat exchangers. Generally two stage furnaces cost about 500 more than comparable single stage models. Two stage furnaces also known as dual stage furnaces can run at two different settings.

This cost effective gas furnace from lennox has an afue rating of 80 percent. Single stage heating uses a fixed gas valve and a one speed motor to provide a single heat setting. These furnaces have a two stage gas valve and a variable speed blower motor. The furnace has a single heat exchanger and a robust blower assembly.

Instead of being either open or closed the gas valve can also be partly open. The best high efficiency furnaces are the evolution 96 and infinity 96 2 stage furnaces. This is a type of fan that can change the speed at which it blows air over the burner. You could buy a two stage furnace with an ecm motor for over 15 years.