All Bosch products are set up with a systematic coding system for both model numbers and serial numbers. Unit model number (including any dash numbers) and serial number must always be used when referring a problem to Bosch in regard to repair parts, literature, wiring diagrams, etc. Use of proper unit identification numbers and serial numbers will greatly help in expediting any material required for these products.

The sequence of letters and digits in the Bosch model number reflects specific information about the unit. The figures below analyze two typical model numbers.

Bosch split systems designates its size in TONS by using the First 2 digits in the model number, following the lettered sequence.

SEER rating is directly after tonnage numbers. 

Example 1: BOVA36-15

Example 2: BVA24-15

Bosch Mini-Split systems show tonnage farther down in the second group of numerical info. 

Example 1: BMS500-AAM036-1CSXRA