Gas Furnace Efficiency Ratings

4 5 out of 5 furnace options.

Gas furnace efficiency ratings.

They re both very dependable and are a good value based on cost. Weatherized gas furnaces must be 81 percent efficient. Reliability is the hallmark of these identical brands. Weatherized oil furnaces must be 78 percent efficient.

Non weatherized oil furnaces must be 83 percent efficient. Today the bare minimum allowed by law is 78. Trane s gas furnaces combine fuel efficiency with noise reducing technology for complete comfort. This premier furnace boasts an efficiency rating of up to 99 that means it essentially converts every last bit of energy it uses into heating the home.

Precise comfort technology allows the furnace to keep the temperature held exactly where you want it. Oil furnaces are typically priced lower and provide more heat per btu but are less efficient. So a 95 furnace is more efficient than an 80. In this type of furnace 20 of the energy produced by natural gas is expelled as exhaust.

In the 70s most gas furnaces had an afue around 65. High efficiency furnaces offer 90 or more afue. The lowest efficiency allowed by law for new gas furnaces is 78 percent and some new models achieve 97 percent near total efficiency. 1 stage 2 stage and variable capacity gas furnaces in 80 and 90 plus options.

All gas furnaces installed in the northern states about 30 in total must be 90 percent efficient. Rheem furnaces rank highly in terms of ease of maintenance sound rating and energy efficiency. The prestige series r98v rheem s most efficient gas furnace has an afue rating of up to 98 7 percent making it the most efficient model we came across during our research. The single stage furnaces perform between 80 and 95 afue while two stage models operate between 80 and 96 7 afue ratings.

The better units are equipped with variable speed blowers. These days 95 afue is a common rating among new gas powered furnaces. A standard efficiency furnace provides 80 annual fuel utilization efficiency afue. The price of a furnace generally rises in step with its fuel.

The r98v s value comes from a modulating design and a variable speed blower. The modulating gas furnace by trane operates at an afue level of 97 3 which is highly efficient. As of january 2015 these requirements are pending. An oil furnace generates heat using oil while gas furnaces are fueled by natural gas propane.

When comparing furnace reviews you should consider a variety of factors like gas type efficiency cost warranty and more.