like you said, there is no letter in front of those four numbers, so. The letter indicated the plant at which the unit was manufactured and the four numbers which followed were the week and the year, but. However, my serial has no 'F'.Īs I recall, the newer ones had a letter followed by four numbers which were typically in front of the serial number. but now I'm wondering if it's the date code.Įvery place I look for Rheem serial number decoder rings says that the 4 digits after the 'F' in the number are the date code. The 12 in this serial number represents the year, the 31 is the fiscal week, and just for fun the 2 is the work day of the week this unit was “born”.Ĭall Hardy Services for any questions or needs for your commercial HVAC, Plumbing & Controls needs.Since the '2287' is off by itself, I first thought maybe it was the sequential build number. Example: if the serial number is 7754F312026…… that would mean that the unit was manufactured in the 31st fiscal week of 2012, i.e. You can enter the serial number in your internet search engine or you can decode the number yourself. If the MFR DATE isn’t listed then look at the model and serial number that is given specifically for each piece of equipment. If that is the case, then you know the age of the equipment. Sometimes the manufacturer birthdate will be listed as MFR DATE. On most units this is located on the backside of the cabinet. You will find a metal nameplate attached containing the system’s technical specification.

To find the age of the equipment, look at the outside cabinet of the air conditioning system. Cost of maintenance and Preventive Maintenanceįinding the Manufacturer Date on Your Commercial HVAC.Help in Replace/Repair Decision ( Avoid HVAC Breakdown blog).

Energy Efficiency ( Spring into Action blog).

Budgeting Purposes – (it is getting close to the end of the fiscal year and you may need to budget for a new unit).

Here are just a few reasons why you may want to know the age of your HVAC equipment:

Why is the age of you HVAC equipment important? Glad you asked.

Rheem serial numbers nomenclature hvac