Lennox Air HandlerHow to Decode
Lennox International is a leader in energy-efficient climate control solutions with over a century of innovation.
Decode Your Unit NowLennox Air Handler — Type
Brand
Lennox
Equipment Type
Air Handler
SEER Range
N/A
Expected Lifespan
15-25 years
Serial Format
Year-Week (YYWW)
Warranty
10-year limited parts
Current Refrigerant
R-410A / R-32
Headquarters
Richardson, TX
Lennox Serial Number Decoding Table
Example
2314B67890
| Positions | Field | Value | Meaning |
|---|---|---|---|
| 1-2 | Year of manufacture | 23 | 2023 |
| 3-4 | Week of manufacture | 14 | Week 14 (April) |
| 5 | Plant identifier | B | Manufacturing facility B |
| 6-10 | Sequential number | 67890 | Production sequence #67890 |
Lennox Model Number Decoding Table
Example
XC21-060-230
| Positions | Field | Value | Meaning |
|---|---|---|---|
| 1-2 | Product series | XC | Dave Lennox Signature Collection |
| 3-4 | SEER rating | 21 | 21 SEER |
| 5-7 | Capacity (000s BTU) | 060 | 60,000 BTU (5 tons) |
| 8-10 | Voltage | 230 | 208/230V |
Lennox Air Handler -- Overview
Lennox manufactures a comprehensive lineup of air handler models ranging from entry-level to premium high-efficiency units. With SEER ratings spanning N/A, Lennox offers options for every budget. These units are backed by 10-year limited parts.
The typical lifespan is approximately 15-25 years with regular maintenance. Our decoder tool can instantly tell you the exact age and condition of your unit.
How to Decode Your Lennox Air Handler Serial Number
Every Lennox HVAC unit has a unique serial number that encodes critical information about the unit. Lennox uses a Year-Week (YYWW) format, where specific characters represent the manufacturing date, production facility, and unit sequence number.
For example, the serial number "2314B67890" can be decoded as follows: the first characters indicate the manufacturing date, while subsequent digits identify the production line and unit number. Our free decoder tool automatically parses this format and reveals the complete manufacturing history.
Maintenance Schedule for Lennox Air Handler
Replace or clean air filters: Every 1-3 months. Clean condenser coils: Annually (spring). Check refrigerant levels: Annually. Inspect electrical connections: Annually. Clean evaporator drain line: Every 6 months. Test thermostat calibration: Annually. Inspect ductwork for leaks: Every 2-3 years.
Lennox Air Handler Efficiency Over Time
Lennox has continuously improved efficiency to meet evolving federal standards. In 2006, the minimum was raised to SEER 13. In 2015, southern states moved to SEER 14. In 2023, new SEER2 standards took effect: 14.3 SEER2 (South), 13.4 SEER2 (North). Modern Lennox models range from 14 to 26+ SEER.
Regarding refrigerants: Lennox units before 2010 likely use R-22 (phased out since 2020 -- expensive and harmful). Units from 2010-2023 use R-410A. Newest models use R-32 or R-454B to meet EPA regulations. Knowing your refrigerant is critical -- R-22 refills cost $100-200+ per pound.
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Decode Your Unit NowFAQ
How do I find the age of my Lennox HVAC unit?
Enter your Lennox serial number into our free decoder. Lennox uses a Year-Week (YYWW) format. We parse it instantly and calculate the exact age, plus a condition status.
Is Lennox a good HVAC brand?
Lennox is one of the most established manufacturers, founded in 1895 with over 131 years of experience. They offer 10-year limited parts and consistently rank among top brands.
What does a Lennox serial number look like?
Lennox serial numbers follow a Year-Week (YYWW) format. Example: "2314B67890". Find it on the metal data plate on the unit.
How long is the Lennox warranty?
Lennox typically offers 10-year limited parts on residential equipment when properly registered.