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Rheem water heater model and serial numbers can be found on your original warranty or sales invoice. If you do not have access to these documents, this information can be found on the unit itself. Please browse the product types below for specific details on locating a model or serial number:

Example picture on how to find your Rheem tank water heater model and serial number.

Tank-Type Water Heater

The label containing model and serial number information can be found on the front of a tank-type water heater.

Example picture on how to find your Rheem tankless water heater model and serial number.

Tankless Water Heater

The label containing model and serial number information can be found on the front or on the right hand side of a tankless water heater depending on the model.

Rheem HVAC model and serial numbers can be found on your original warranty or sales invoice. If you do not have access to these documents, this information can be found on the unit itself. Please browse the product types below for specific details on locating a model or serial number:

Example picture on how to find your Rheem split-system model and serial number.

Split-Systems

The label containing model and serial number information can be found on the back of the outdoor unit and on the inside front cover of the indoor unit. Two model and serial tags identify split system equipment.

Example picture on how to find your Rheem package system model and serial number.

Package-Systems

One model and serial number tag is used to identify Package System equipment. The tag is located on the outside corner of the unit. One model and serial tag identifies package equipment.

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We’ve developed some of the most innovative technologies in home comfort, so your family can depend on efficiently warm winters, cool summers, and hot water all year long.
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The Rheem® Maximus® Super High Efficiency Gas Water Heater delivers dependable hot water, with unmatched efficiency in residential gas water heaters.
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We created the Rheem ® Endeavor ® Line to meet the 2023 Department of Energy regulations. Instead of just increasing size for efficiency, we completely redesigned our products to make them more energy-efficient, dependable, and sustainable.
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Easily find the serial number of your heater, cooler, or water heater with these instructions.
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