Lennox HVAC Age: How to Find Year Of Manufacturer
This quick reference shows you how to determine your Lennox ac age. Lennox ac age typically lasts 10 -15 years, but there are instances when they can last much longer. Like most things, usage, maintenance, and installation type will determine how long the unit last.
Lennox HVAC Age
You can determine the age by locating the serial number on the data plate. Every Lennox air conditioner has a data plate displaying the unit’s information. On the data plate, you will see other information, such as:
- Lennox model numbers
- Lennox serial number identification
- Lennox HVAC Tonnage, Capacity
- Volts – AC, Upper, and Lower Watts
- Manufacturer Location
There are four different styles of Lennox serial number lookup age. It looks like this:
- Style 1: 1708A138 or 1234A123456
- Style 2: A123456AAB
- Style 3: 12A34 BA012
- Style 4: 1234567890
Let’s break down how to read each style of the serial number to determine the Lennox HVAC age that you may be looking at:
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Style 1: 1234A56789 or 1234A123456
The week of the manufacturer is the 3rd and 4th numerical digits
The year of manufacture is the 5th character letter digit
A – January B – February C -March
D – April E – May F – June
G – July H – August J – September
K – October L- November M – December
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Style 2: 850304091
The 1st-2nd four digits represent the year of the manufacture. The third digits represent the year. (See Chart)
Month
A – January B – February C -March
D – April E – May F – June
G – July H – August J – September
K – October L- November M – December
Year
8 – 1978 G – 1986
9 – 1979 H– 1987
A – 1980 J – 1988
B – 1981 K – 1989
C – 1982 L – 1990
D – 1983 M – 1991
E – 1984 N – 1992
F – 1985
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Style 3: W4D14008
The day of manufacture is the 1st-2nd numerical digit
The year of manufacture is the 3rd character digit – See Chart
The year of manufacture is the 4th-5th numerical digits reversed.
A – January B – February C -March
D – April E – May F – June
G – July H – August J – September
K – October L- November M – December
Summary: Lennox HVAC Age
Knowing Lennox furnace models by serial number is not something that we keep top of mind. Still, we should check in occasionally and ensure maintenance is happening regularly. When you know the age of your air conditioner units, you can plan accordingly. Both units should be replaced at the same time to ensure you have the best efficiency from the units on the unit list.
If you have not done so already, check out our blog on “How to Size the Air Conditioner Breaker” or to learn more about Lennox air conditioners, click here.
For additional questions or comments, be sure to reach out. GGR Home Inspections conducts home inspections in the Broward, Palm Beach, and Miami-Dade counties. During our home inspections, we find the age of your HVAC systems.
