![]() ![]() Tonnage is measured in BTUs (British Thermal Units.) One ton of cooling is based on the amount of heat needed to melt one ton (2000 lbs.) of ice in a 24 hour period. Tonnage refers to the cooling capacity of an air conditioner. How to Determine Lennox AC Tonnage from Model Number? ![]() On other Lennox products the data plate is mounted on the outside of your unit. Accessing the Lennox model number may requires remove and set aside your furnace’s front door. On residential gas and oil furnaces this data plate is located on the inside of cabinet near the main panel. The model is determined by a “model number” which is usually located on the unit data plate or rating plate. Lennox Model Number LocationĮach Lennox HVAC units manufactured is a duplication from some particular model. Identifying Lennox model number and serial numbers will help in choosing the right parts for these products. Lennox uses this number as a guide for identifying the age, size and warranty information. The series of letters and digits in the Lennox model number reflects particular information relating to the product. All Lennox product is build with a systematic coding system for both model and serial numbers. ![]() The Lennox model number is an important instrument in determining the right replacement part for a specific model. ![]()
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