Merit® Series G43 Gas Furnace

Innovation never felt so good.™

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

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.

ECONOMICAL, HIGH-EFFICIENCY GAS HEATING

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.

G43

Up to 92.1% AFUE

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.

 

 

 

 

 

 

 

 

 

Many Lennox® home

 

Lennox is proud of the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

comfort systems meet

 

fact that these products

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ENERGY STAR® requirements

 

have earned the Good

 

 

 

THIS MODEL

 

 

 

 

when used with appropriate

 

Housekeeping Seal.

 

 

 

90.0%-92.1%

 

 

 

 

components. Ask your

 

 

 

 

 

 

 

 

 

 

 

dealer for details.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(77M40) G43 8/05 © Lennox Industries Inc. 2004

PC42717

Visit us at www.lennox.com, or contact us at 1-800-9-LENNOX.