How Can I Tell the Tonnage of My Lennox Air Conditioner?

FAQs william September 22, 2022

You can determine the tonne size of your Lennox HVAC system by examining the model number on the data label on the side of the A/C condenser (outdoor unit). Look for the second set of digits in the model number. It is a number divisible by 6 or 12 representing the system’s nominal BTU in thousands.

How do I know if my AC is 1 ton or 1.5 ton?

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