Century HVAC Age by Serial Number
Parent Company: MARS
Similar Brands: Allied-Commercial | Century | Comfort-Aire
😊The age of your Century HVAC system CAN NOT be determined by the serial number located on the data plate.
😡The age of your Century HVAC system CAN NOT be determined by a manufactured date located on the data plate.
Many manufacturers, such as Century, encode the date of manufacture in their serial number.
Century HVAC Age Format #1
Description: Twelve (12) character serial number. All Serial numbers begin with three (3) letters.
Year=is 4th & 5th digits combined.
Month=Is 6th & 7th numerical digits.
The remaining five is the manufacture sequence.
Century HVAC Age Format 1 Sample #1
Century HVAC Age Format #2
Description: All units manufactured in the 1980’s Follow this pattern.
Nine (9) character serial number.
All Serial numbers begin with one (1) letter followed by nine (8) numerical digits.
Year = 2nd numerical digit.
Week = 3rd-4th digits
The remaining five is the manufacture sequence.

Century HVAC Age Format 1 Sample #1
About Century
True to its name, Century HVAC equipment has nearly 100 years of experience in the heating and air conditioning market.
Century HVAC equipment life expectancy
Many homeowners want a Home Inspector to predict how long their HVAC equipment will last. This is simply impossible and beyond the scope of a Home Inspection — depending on the model, installation, maintenance, and fuel source its lifetime could be anywhere between 1 to 30 years or more.
The first step you should take when determining the HVAC equipment’s age is to check the manufacturer’s label attached to the unit.
The label will often include pertinent information including:
- Manufacturer Name
- Brand Name
- Manufacture Date
- Model Number
- Serial Number
If you can’t determine the installation date of the HVAC Equipment, it’s worth checking to see if you’re nearing time for a replacement based on the manufactured date/age. You can use the model number in conjunction with the serial number of the unit in order to determine the HVAC equipment’s age.
Here is a list of additional HVAC Manufacturers.
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Last Updated on 2 years ago


