KeepRite · Observer Series
KeepRite Observer G9MAE Modulating
98% AFUE Modulating gas furnace with a variable-speed ECM blower.
Specifications
AFUE Efficiency
98%
Heating Stage
Modulating
Blower Motor
variable-speed ECM
Sound Level
60 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
Observer G9MAE Modulating reviews
Reliable through a brutal winter
"Survived our first -30 cold snap without a hiccup. Steady, warm, and the variable-speed blower is so quiet we forget it's running."
— Wei R., Burnaby · 2025-11-05
Worth the upgrade
"The monthly payment made the high-efficiency model affordable. Rebate covered a big chunk and the savings on our bills basically cover the payment."
— Fatima G., Surrey · 2025-12-12
Quiet and efficient — bills dropped
"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."
— Sarah M., Toronto · 2025-01-19
More KeepRite models
Performance N9MSE Two-Stage
Two Stage · 20 yr heat exchanger
96%
AFUE
66
dB
4.4
Rating
Installed
$5,900 – $7,700
Standard N8MSL
Single Stage · 20 yr heat exchanger
80%
AFUE
71
dB
4.2
Rating
Installed
$4,700 – $6,500
Observer G97MSN Variable 97%
Variable Speed · Lifetime heat exchanger
97%
AFUE
62
dB
4.6
Rating
Installed
$6,500 – $8,300