Temp Star – How to determine the age or manufacture date
Every effort is undertaken to offer you correct and concise information to assist you in determining the age or manufacture date of HVAC equipment. Anytime anyone is dealing with numbers and letters in determining data, mistakes and misinterpretation are bound to happen. For this reason if you find during your research that we may have erred please contact us. In addition perhaps you have come across a brand, model or serial number format that we have not addressed. Email us information or pictures of data/nomenclature plates of the unit and we will attempt to assist you in your determinations. Email
This page was last updated: 8 August 2009
Temp Star – (1990 to present)
Manufacturer: ICP
Serial Number format: L903035956
(This serial number is from an actual furnace).
Date of Manufacture: Using the second, third, fourth and fifth digits of the serial number L90303596 you will find the year and week of manufacture. The second and third digits are the year of manufacture and the fourth and fifth digits are the week. This unit was manufactured in the 30th week of 1990.
Year of manufacture: L90303596
Week of manufacture: L90303596