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Directory: Catalog > Water
Heaters > A.O. Smith > Parts

Parts List: A.O. Smith GCNH50100
- Use the chart to find the part you need to order. A diagram of the unit is below the chart to assist you in locating your part.
- Click on the underlined link to go directly to the part's page for pricing and ordering.
- For parts that are not underlined and do not have a link, please Contact Us for price and availability.
- The manufacturer has changed some part numbers to a new part number, and we have referenced the new part number in the chart (if applicable). Please note that the manufacturer may change part numbers and availability at any time.
- You can download and print the original PDF of the A.O. Smith parts list at the bottom of the page.
| Item |
Description |
GCNH50100 |
| 1 |
Draft Hood |
70795-020 |
| 2 |
Reducer Ring |
70795-021 |
| 3 |
Flue Baffle |
9006437005 |
| 4 |
Heat Trap (Cold) |
9003915015 |
| 5 |
Heat Trap (Hot) |
9003915015 |
| 6 |
Cold Water Dip Tube |
9006431005 |
| 7 |
Anode Rod |
9003892005 |
| 8* |
Temperature & Pressure Relief Valve (Located Top or Side) |
9000728015 |
| 9 |
Drain Valve Brass |
9001870015 |
| 10 |
Gas Control Valve / Thermostat |
9006439005 |
| 11 |
Outer Door |
700795-018 |
| 12 |
Pilot Assembly Kit (Natural Gas) |
9006441005 |
| 13 |
Burner/Door Assembly |
9006444005 |
| 14 |
Two Piece Wire Connector with Retaining Clip |
9006449015 |
| 15 |
Burner Door Gasket |
9006141015 |
| 16 |
Viewport Assembly |
9006142015 |
| 17 |
Thermocouple |
9000056015 |
| 18 |
Piezoelectric Ignitor Button |
9006143015 |
| 19 |
Flexible Manifold Tube |
9006445015 |
| 20 |
22 in. Dia. Aluminum Drain Pan with Side Drain (optional) |
23913-A (new # 9001609005) |
NOTES:
- The manufacturer may change part numbers and availability at any time.
* Top T&P models use same parts indicated for standard models |

Download original AO Smith Parts List
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