Appliance Serial Number Decoder — Find Manufacture Date & Appliance Age
Enter your serial number and brand to decode the manufacture date. Works for Whirlpool, GE, Samsung, LG, Frigidaire, and 45+ more brands.
Decode any appliance serial number to extract the manufacture date and estimate appliance age. Supports 55+ brands across 12 algorithm families. Free web tool available, plus REST API for software integration.
Manufacture Date
Extract the exact month and year of manufacture from the serial number pattern.
Appliance Age
Calculate how old an appliance is in years and months. Essential for inspections and warranty eligibility.
Multi-Brand Support
Each brand uses a different serial format. We maintain decode logic for 50+ brands including all major US manufacturers.
Confidence Scoring
Each brand uses date codes that can map to multiple possible years. Our algorithms rank possibilities by confidence and use the model number to narrow results.
How Serial Number Decoding Works
Every appliance manufacturer encodes the production date in the serial number using a proprietary format. Each brand is different — there is no universal standard. ApplianceAPI maintains decode algorithms for 55+ brands across 12 algorithm families.
Enter the brand and serial number, and the API returns the manufacture date, estimated age, and a confidence score. The model number (if provided) helps narrow results when year codes cycle.
Try the free decoder at applianceapi.com/appliance-date.
Appliance Age & Average Lifespans
Knowing your appliance age helps with repair-vs-replace decisions, warranty eligibility, and property inspections. Here are average lifespans by appliance type:
| Appliance | Average Lifespan |
|---|---|
| Refrigerator | 13–17 years |
| Washing Machine | 10–14 years |
| Dryer | 13–14 years |
| Dishwasher | 9–13 years |
| Range / Oven | 15–17 years |
| Microwave | 9–10 years |
Source: NAHB/NKBA industry data
Accuracy and Limitations
Serial decoding is generally accurate for appliances manufactured after 1990. Each brand uses date codes that cycle at different intervals, so providing the model number helps the algorithm determine the correct decade.
For some discontinued brands and very old appliances, the system may return multiple possible dates ranked by confidence. The free web tool lets you try before integrating the API.
Frequently Asked Questions
How old is my appliance by serial number?
Enter your brand and serial number into the decoder tool or API. ApplianceAPI handles the brand-specific decoding automatically and returns the manufacture date with a confidence score.
Can you tell how old an appliance is by serial number?
Yes, for most major brands. ApplianceAPI supports 55+ brands with 12 different decode algorithms. Enter brand + serial and get the manufacture date.
How do you tell the year by the serial number?
Each manufacturer embeds the production date differently. ApplianceAPI maintains proprietary decode logic for each brand family. You provide the serial number — we handle the rest.
Is serial number decoding accurate?
Generally accurate for appliances manufactured after 1990. Year codes cycle every 10-30 years depending on the brand, so providing the model number helps narrow down the correct decade.
How can I find out how old my appliance is?
Find the serial number on your appliance (usually on a sticker inside the door, under the lid, or on the back). Enter the brand and serial number into our free decoder tool to get the manufacture date and age.
What is the average lifespan of a refrigerator?
Refrigerators typically last 13-17 years according to NAHB/NKBA industry data. Washers 10-14 years, dryers 13-14 years, dishwashers 9-13 years, ranges 15-17 years.
Is there a free tool to check appliance age?
Yes. ApplianceAPI provides a free web-based age finder tool at applianceapi.com/appliance-date that decodes serial numbers for 50+ brands. No signup required.