Furnace Ratings by Brand

A warm-air furnace's furnace rating or efficiency rating is typically measured by its AFUE (Annual Fuel Utilization Efficiency). The "fleet efficiency" of a particular brand is the average efficiency of all of the models sold under that brandname.

Brands with the Highest Fleet Efficiency

Natural Gas Furnaces (with more than 100 models)

1. AIRE FLO
2. PAYNE HEATING & COOLING
3. TRANE
4. H.E.P. MATERIALS CORP.
5. CROWN

Natural Gas Furnaces (with 100 or fewer models)

1. KENMORE
2. CLARE BROTHERS
3. THERMO PRODUCTS, INC
4. SERVICE EXPERTS, INC.
5. DMO INDUSTRIES

Oil Furnaces (all brands)

1. COLUMBIA BOILER/POTTSTOWN
2. BOYERTOWN FURNACE CO.
3. CLARE BROTHERS
4. THERMO PRODUCTS, INC
5. DMO INDUSTRIES

Most Popular Furnace Brands

Another way to compare furnaces is to examine their popularity. FurnaceCompare tracks the number of times that our users request furnace information, and then ranks furnace brands by their popularity. For more information on how we create this ranking, please see our methodology.

1. Trane
2. Carrier
3. American Standard
4. Lennox
5. Payne
6. Aire Flo
7. Goodman
8. Amana
9. Rheem
10. Armstrong

(Source: data from FurnaceCompare.com.)

Notes on Furnace Ratings

The "fleet efficiency" or "furnace rating" of a particular furnace brand indicates nothing about furnace quality or furnace durability. In addition, although the fleet efficiency of one brand might exceed that of another, this does not necessarily indicate that any particular model of furnace marketed under the first brand out-performs any particular model of furnace marketed under the second. To determine whether one model outperforms another, simple compare the AFUE of the two models.