Furnace System GuideBryant and Carrier both sell premium high-efficiency furnaces. This page collects the specs each brand publishes on its own site, brand by brand, then notes where they differ on paper. It does not pick a winner.
How to Read This Comparison
Every spec below is taken from each manufacturer's own furnace pages, and each brand describes its lineup differently, so direct one-to-one matching is imperfect. AFUE figures are the top-of-line numbers each brand advertises.
AFUE measures fuel-to-heat efficiency only. It does not capture install quality, duct losses, dealer network, or price. Treat this as a paper-spec reference, not a verdict.
Where a brand did not publish a number on the page reviewed, this comparison leaves it out rather than estimating it.
Bryant, As Published
Bryant tops its lineup with the Evolution 98 Variable-Speed Modulating Gas Furnace, model 987M, which Bryant advertises at up to 98.5 percent AFUE. Bryant documents three gas valve types across its lines: modulating, two-stage, and single-stage.
Bryant states that a 10-year parts limited warranty applies upon timely registration across multiple product lines, and that the 987M qualifies for a 10-year unit replacement warranty on select models. Bryant's Evolution and Preferred Series feature variable-speed airflow technology.
These are the figures Bryant publishes on its gas furnace page as of this review.
Carrier, As Published
Carrier positions the Infinity 98 Gas Furnace, model 59MN7, as its most advanced, energy-efficient furnace. Carrier states the Infinity 98 uses modulating operation that adjusts heat in 1 percent increments, paired with variable-speed blower motors.
On efficiency, Carrier's furnace page states that Comfort Series furnaces can provide energy savings with AFUE ratings of up to 95 percent. Carrier's lineup steps down from the modulating Infinity 98 to two-stage and single-stage models.
These are the figures Carrier publishes on its furnace overview page as of this review.
Where They Differ on Paper
Both brands top their lineups with a variable-speed modulating flagship, but the advertised numbers are framed differently. Bryant cites up to 98.5 percent AFUE for its Evolution 98 model, while Carrier cites up to 95 percent for its Comfort Series and names its flagship the Infinity 98.
Both offer modulating, two-stage, and single-stage designs, so the structure of each lineup is similar. Bryant states a specific 10-year parts warranty on registration, while Carrier highlights modulation in 1 percent increments.
The published specs do not settle which furnace is better for a given home. Price, the local dealer, install quality, and warranty registration all sit outside these numbers.