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Excellent efficiency can
save you hundreds of
dollars each year
ENERGY STAR
®
-qualified
Durable, high-quality
design for long-lasting
performance
Up-flow configuration
allows installation in
basements or closets
Merit
®
Series G43 Gas Furnace
ECONOMICAL, HIGH-EFFICIENCY GAS HEATING
G43
Up to 92.1% AFUE
Innovation never felt so good.
™
EFFICIENCY RATING
Up to 92.1% AFUE (Annual
Fuel Utilization Efficiency)
WARRANTY*
20-year limited warranty
on the heat exchanger.
5-year limited warranty
on all remaining
covered components.
* Applies to residential applications only.
See actual warranty certificate for details.
© Lennox Industries Inc. 2004
Visit us at www.lennox.com, or contact us at 1-800-9-LENNOX.
(77M40) G43 8/05
PC42717
Merit
®
Series G43 Specifications
G43UF 24B-045 24B-070 36B-070 36C-090
AFUE 90% 90% 92.1% 92.1%
Dimensions HxWxD (in.) 40 x 17-1/2 x 28-1/2 40 x 17-1/2 x 28-1/2 40 x 17-1/2 x 28-1/2 40 x 21 x 28-1/2
HxWxD (mm) 1016 x 446 x 724 1016 x 446 x 724 1016 x 446 x 724 1016 x 533 x 724
G43UF 48C-090 48C-110 60C-110 60D-135
AFUE 92.1% 92.1% 92.1% 92.1%
Dimensions HxWxD (in.) 40 x 21 x 28-1/2 40 x 21 x 28-1/2 40 x 21 x 28-1/2 40 x 24-1/2 x 28-1/2
HxWxD (mm) 1016 x 533 x 724 1016 x 533 x 724 1016 x 533 x 724 1016 x 622 x 724
Note: Due to Lennox’ ongoing commitment to quality, all specifications, ratings and dimensions are subject to change without notice.
Duralok Plus
®
Heat Exchanger –
Made of patented ArmorTuf
™
aluminized steel that’s life-tested to
2-1/2 times standard requirements
(ANSI Standard Z21.47) for long life
and durability.
Secondary Heat Exchanger –
Allows the furnace to reach high
efficiency levels by capturing
additional heat.
Integrated Control Board –
Provides full control of
furnace operation.
Durable Steel Cabinet –
Made to last, with a resilient and
attractive textured-paint finish.
THIS MODEL
90.0%-92.1%
Many Lennox
®
home
comfort systems meet
ENERGY STAR
®
requirements
when used with appropriate
components. Ask your
dealer for details.
Lennox is proud of the
fact that these products
have earned the Good
Housekeeping Seal.