We found no statistically meaningful differences in percent of models ever repaired for the brands listed below. For 5 of the 6 years examined, Goodman furnaces were much less reliable than the listed brands. Goodman isn't listed because the sample size in 2001 was slightly too small.

Brand repair history

Brand
Rheem	13
Trane	13
Amana	14
American Standard	14
Ruud	14
Carrier	15
Bryant	15
Lennox	16
Heil	16
York	16

Data are based on more than 22,000 reader responses about gas furnaces installed between 2000 and 2006 in our Annual Product Reliability Survey conducted by the Consumer Reports National Research Center. Data are adjusted to eliminate differences linked solely to climate and product age. Models within a brand may vary. Changes in design or manufacture might affect reliability.