Product Overview

For technical information call 800-527-1953. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.
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AOSRG45810
BLOWER
EXHAUST
OUTLET
40-GAL. = 25"
50-GAL. = 27"
E
Dimensions and specifications subject to change without notice in accordance with our policy of continuous product improvement.
All Dimensions shown in inches.
Top inlet and outlet are on 8” centers.
Operates on Natural Gas only.
Model
Number
Gallon
Capacity
First Hour
Rating Gallon
Per Hour
Energy
Factor
Recovery @
90°F Rise
Gallon Per
Hour
BTU Input
Gallon Per
Hour
Dimensions in Inches
Draft
Hood
Approx.
Shipping
Weight (lbs)
A B C D E
GPNH-40 40 69 0.68 42.6 42,000 20 66-7/8 58-5/8 51-1/2 12-1/4 2 or 3 170
GPNH-50 50 81 0.68 42.6 42,000 22 66-8/8 57-7/16 51 12-1/4 2 or 3 207
COMMERCIAL-GRADE
RESIDENTIAL GAS WATER HEATERS