Furnace category
Variable-Speed Furnaces
Variable-speed furnaces use an ECM blower that constantly adjusts airflow to match demand. They deliver the most consistent comfort, the quietest operation, and the lowest electricity use of any furnace type.
Ideal for
- Premium comfort seekers
- Multi-level homes
- Allergy & air-quality control
Highlights
- Whisper-quiet ECM blower
- Best filtration & humidity control
- Lowest electricity use
Variable-Speed Furnaces — 25 models
SLP99V
Modulating · Lifetime heat exchanger
99%
AFUE
58
dB
4.8
Rating
Installed
$9,300 – $11,100
SLP99V XC Dual-Fuel Package
Modulating · Lifetime heat exchanger
99%
AFUE
57
dB
4.8
Rating
Installed
$10,900 – $12,700
Infinity 98 (59MN7)
Modulating · Lifetime heat exchanger
98.5%
AFUE
58
dB
4.8
Rating
Installed
$9,100 – $10,900
GMVM97
Modulating · Lifetime heat exchanger
98%
AFUE
59
dB
4.8
Rating
Installed
$7,300 – $9,100
Affinity YP9C Modulating
Modulating · Lifetime heat exchanger
98%
AFUE
60
dB
4.8
Rating
Installed
$7,600 – $9,400
Evolution 987M Modulating
Modulating · Lifetime heat exchanger
98%
AFUE
58
dB
4.8
Rating
Installed
$8,000 – $9,800
AMVM97 Modulating
Modulating · Lifetime heat exchanger
98%
AFUE
58
dB
4.8
Rating
Installed
$7,500 – $9,300
Observer G9MAE Modulating
Modulating · Lifetime heat exchanger
98%
AFUE
60
dB
4.8
Rating
Installed
$7,100 – $8,900
Ion 98 F9MVE Modulating
Modulating · Lifetime heat exchanger
98%
AFUE
60
dB
4.8
Rating
Installed
$7,000 – $8,800
Prestige R98V Modulating
Modulating · Lifetime heat exchanger
98%
AFUE
59
dB
4.8
Rating
Installed
$7,400 – $9,200
SLP98V Variable-Speed
Variable Speed · Lifetime heat exchanger
98%
AFUE
59
dB
4.6
Rating
Installed
$8,200 – $10,000
S9V2-VS
Modulating · Lifetime heat exchanger
97.3%
AFUE
59
dB
4.8
Rating
Installed
$8,900 – $10,700
XC95m
Modulating · Lifetime heat exchanger
97%
AFUE
60
dB
4.7
Rating
Installed
$8,600 – $10,400
Prestige R97V Variable
Variable Speed · Lifetime heat exchanger
97%
AFUE
62
dB
4.6
Rating
Installed
$6,600 – $8,400
GME8 Modulating 96%
Modulating · Lifetime heat exchanger
97%
AFUE
60
dB
4.7
Rating
Installed
$7,000 – $8,800
Affinity YP9V Modulating 97%
Modulating · Lifetime heat exchanger
97%
AFUE
59
dB
4.7
Rating
Installed
$7,900 – $9,700
AMEC97 Modulating 97%
Modulating · Lifetime heat exchanger
97%
AFUE
60
dB
4.7
Rating
Installed
$7,800 – $9,600
Observer G97MSN Variable 97%
Variable Speed · Lifetime heat exchanger
97%
AFUE
62
dB
4.6
Rating
Installed
$6,500 – $8,300
Ion System 97 (F97CMN)
Variable Speed · Lifetime heat exchanger
97%
AFUE
61
dB
4.6
Rating
Installed
$6,800 – $8,600
EL296V
Variable Speed · 20 yr heat exchanger
96%
AFUE
64
dB
4.7
Rating
Installed
$6,900 – $8,700
Affinity YP9V Variable
Variable Speed · Lifetime heat exchanger
96%
AFUE
63
dB
4.6
Rating
Installed
$6,700 – $8,500
Commercial XLC Packaged (48XLC)
Modulating · Lifetime heat exchanger
96%
AFUE
60
dB
4.7
Rating
Installed
$11,600 – $13,400
Prestige R96VC Variable 96%
Variable Speed · Lifetime heat exchanger
96%
AFUE
63
dB
4.6
Rating
Installed
$6,300 – $8,100
Commercial RGPN Packaged
Modulating · Lifetime heat exchanger
96%
AFUE
60
dB
4.7
Rating
Installed
$11,200 – $13,000
XV80 Variable-Speed
Variable Speed · Lifetime heat exchanger
80%
AFUE
63
dB
4.6
Rating
Installed
$6,400 – $8,200