innovative features for enhanCed Comfort and effiCienCy
heat exchanger
–
Constructed of heavy-gauge steel for maximum life.
innovative Combustion Chamber
–
Constructed from alumina-silica ceramic fiber,
provides quiet operation and high efficiency.
riello burner
–
Delivers super-efficient combustion for greater fuel economy. A
high-quality burner with special attention to sound reduction.
blower motor
–
Multi-speed, direct-drive system that is statically and
dynamically balanced.
insulated blower Compartment
–
Minimizes operating sounds.
durable, insulated steel Cabinet
–
Built to last and coated with a high-quality paint finish.
O25
Up to
84% afUE
more energy-efficient
97%
78%
THIS MODEL
81.5%-84%
elite
®
series o25 specifications
O25 Upflow
025Q2-70
Q2/3-105/120
Q4/5-140/154
AFUE
84%
82%
81.5%
Dimensions HxWxD (in.)
54 x 19-1/2 x 30-5/8
54 x 19-1/2 x 30-5/8
54 x 22-1/2 x 33-1/8
HxWxD (mm)
1372 x 495 x 778
1372 x 495 x 778
1372 x 572 x 841
OF25 Lo-Boy (Rear Flue)
Q2/3-105/120R
OF25 Lo-Boy (Front Flue)
Q2/3-105/120
AFUE
82% front/82.5% rear
Dimensions HxWxD (in.)
37 x 19-1/2 x 52-1/8
HxWxD (mm)
940 x 495 x 1324
OHR25 Down-flow/Horizontal
Q2/3-105/120
AFUE
83.5%
Dimensions HxWxD (in.)
59 x 23-1/2 x 23-1/2
HxWxD (mm)
1499 x 597 x 597
Note: Due to Lennox’ ongoing commitment to quality, all specifications, ratings and dimensions are subject to change without notice.
Quality you can trust.
Designed with reliable, time-tested components.
Lennox is proud of the
fact that these products
have earned the Good
Housekeeping Seal.
