Armor-Lochinvar® (Water Heater)
Brands include: Aquas - Armor - Cadet - Copper-Fin - Copper-Fin II -Crest - EnergyRite - FTXL - Knight - Knight XL - Lochinvar - Noble - Power-fin - Shield - Squire - SYNC and others.
How to determine the date of production/manufacture or age of Lochinvar® HVAC and Water Heater Systems.
The date of production/manufacture or age of Lochinvar® HVAC equipment can be determined from the serial number located on the data plate.
Parent Company: Lochinvar
Example serial number styles/formats found:
The Serial Numbers shown are utilized with all Lochinvar Brand systems of Boilers, Water Heaters, Pool Heaters, etc.
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Style 1: KJ-1000130
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Style 2: 1142N012345
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Style 3: J-93001
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Style 4: A07H00123456
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Style 5: J93-1030F
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Style 6: M78013
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Style 7: 5Y013
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Style 8: 1234569708
Style 1: KJ-1000130
Year of manufacture can be determined by using the 1st letter digit.
Month of manufacture can be determined by using the 2nd letter digit.
![Image](https://www.building-center.org/wp-content/uploads/2017/08/Lochinvar-Style-1_Serial-Number.png)
Style 2: 1142N012345
Year of manufacture can be determined by using the 1st & 2nd numerical digits.
Week of manufacture can be determined by using the 3rd & 4th numerical digits.
![Image](https://www.building-center.org/wp-content/uploads/2017/08/Lochinvar-Style-2_Serial-Number.png)
Style 3: J-930001
Month of manufacture can be determined by using the 1st letter digit.
Year of manufacture can be determined by using the 3rd & 4th (the 2nd digit is a dash) numerical digits.
![Image](https://www.building-center.org/wp-content/uploads/2017/07/LOCHNIVAR-3-Serial-Number.jpg)
Style 4: A07H00123456
Month of manufacture can be determined by using the 1st letter digit.
Year of manufacture can be determined by using the 2nd & 3rd numerical digits.
![Image](https://www.building-center.org/wp-content/uploads/2017/08/Lochinvar-Style-4_Serial-Number_slide-1.png)
Style 5: J9312030F
Month of manufacture can be determined by using the 1st letter digit.
Year of manufacture can be determined by using the 2nd & 3rd numerical digits.
![Image](https://www.building-center.org/wp-content/uploads/2017/08/Lochinvar-Style-3_Serial-Number_slide-1.png)
Style 6: M78013
Month of manufacture can be determined by using the 1st letter digit.
Year of manufacture can be determined by using the 2nd & 3rd numerical digits.
![Image](https://www.building-center.org/wp-content/uploads/2017/08/Lochinvar-Style-6_Serial-Number.png)
Style 7: 5Y013
Month of manufacture can be determined by using the 1st numerical digit.
Year of manufacture can be determined by using the 2nd letter digit.
![Image](https://www.building-center.org/wp-content/uploads/2017/08/Lochinvar-Style-7_Serial-Number.png)
Style 8: 1234569708
The last four digits of the serial number represent the year and month of manufacture.
![Image](https://www.building-center.org/wp-content/uploads/2017/08/Lochinvar-Style-8_Serial-Number.png)
Page last updated: 7/28/2017