Carrier · Infinity Series
Carrier Infinity 98 (59MN7)
98.5% AFUE Modulating gas furnace with a variable-speed ECM blower.
Specifications
AFUE Efficiency
98.5%
Heating Stage
Modulating
Blower Motor
variable-speed ECM
Sound Level
58 dB
ENERGY STAR
Certified
BTU Range
40,000–120,000
Heat Exchanger Warranty
Lifetime
Parts Warranty
10 years
Key features
- Modulating gas valve (1% increments)
- Variable-speed ECM blower
- Near-constant comfort
- Lowest temperature swings & sound
Pros & cons
Pros
- Best-in-class comfort
- Quietest operation
- Maximum efficiency & rebates
Cons
- Premium price
- More complex repairs
Infinity 98 (59MN7) reviews
Exactly what we needed
"Survived our first -30 cold snap without a hiccup. Steady, warm, and the variable-speed blower is so quiet we forget it's running."
— Daniel R., Burnaby · 2025-05-02
Warm house, lower gas bill
"The monthly payment made the high-efficiency model affordable. Rebate covered a big chunk and the savings on our bills basically cover the payment."
— Sophie G., Surrey · 2025-06-09
Professional from quote to install
"Replaced our 20-year-old furnace and the difference is night and day. The house heats evenly and it's noticeably quieter. Our gas bill dropped about 25% over the winter."
— Jennifer M., Toronto · 2025-07-16
More Carrier models
Infinity 96 (59TN6)
Two Stage · Lifetime heat exchanger
96.7%
AFUE
63
dB
4.4
Rating
Installed
$7,800 – $9,600
Performance 96 (59TP6)
Two Stage · 20 yr heat exchanger
96%
AFUE
66
dB
4.5
Rating
Installed
$6,700 – $8,500
Comfort 95 (59SC5)
Single Stage · 20 yr heat exchanger
95%
AFUE
70
dB
4.2
Rating
Installed
$5,500 – $7,300