Before you replace are you sure it is not a leaking valve, connection, pressure relief valve or drain?
Did you look for the model number, etc. by opening the outside vent cover. Mine has all the data near the burner rather than inside access area.
2017 SLX 195RB
2021 Jeep Grand Cherokee Summit L 5.7L V8
Andersen WDH hitch, Renogy 100 AH Lithium &
200 Watts solar panels from Renogy
Prev. '14 Jeep Grand Cherokee Overland, gas 3.6 V6