Grandaire®
How to determine the date of production/manufacture or age of Grandaire® HVAC Systems.
The date of production/manufacture or age of Grandaire® HVAC equipment can be determined from the serial number located on the data plate.
Parent Company: Baker Distributing Company
Example serial number styles/formats found:
-
Style 1: GQB030201629
-
Style 2: GQB0302-01629
-
Style 3: E072514528
Style 1: GQB030201629
Year of manufacture can be determined by using the 4th & 5th numerical digits.
Month of manufacture can be determined by using the 6th & 7th numerical digits.
Style 2: GQB0302-01629
Year of manufacture can be determined by using the 4th & 5th numerical digits.
Month of manufacture can be determined by using the 6th & 7th numerical digits.

Style 3: E072514528
Year of manufacture can be determined by using the 2nd & 3rd numerical digits.
Week of manufacture can be determined by using the 4th & 5th numerical digits.
