AO Smith 9003573005 Water Heater Burner Assembly KitAO Smith 9003573005 Water Heater Burner Assembly Kit is a reliable replacement part designed for natural gas water heaters, delivering consistent ignition, controlled flame, and efficient heat transfer. Built to withstand typical household conditions, this kit helps restore original performance, reduce pilot outages, and extend the service life of your hot water system. It is a direct fit replacement for AO Smith units, ensuring a secure fit and

This AO Smith 9007872005 compatible kit helps replace a worn or faulty thermopile to restore safe

efficient operation across typical inlet pressures

and long-term reliability of your gas-fired hot water boiler

floating point control for precise HVAC modulation

It supports both vertical and horizontal installations with female threaded union x female threaded union ends

As a direct replacement ignition transformer

This essential flame sensor helps monitor flame presence to ensure safe ignition

Humidity: Up to 90% relative humidity

the AO Smith 9006289015 kit switch blocked outlet provides a straightforward retrofit that reduces risk and enhances control

a 1/2 inch nominal size

ISO 9001 certified

this unit provides fast