Hvac Serial and Model numbers Air conditioner serial and model number Decode. Each Hvac brand has its own serial and model number and each serial and model number have a different way of telling you the information. This blog describes how air conditioners dehumidify.
Model Number CG90TB075D12B (35YJ93)? For example, the “XC21” at the beginning of the model number of the Lennox condenser shown below indicates it is rated at 21 SEER.
