• Lennox average net profit margin for 2023 was 11.26%, a 5.53% increase from 2022.
• Lennox average net profit margin for 2022 was 10.67%, a 7.46% increase from 2021.
• Lennox average net profit margin for 2021 was 11.53%, a 18.99% decline from 2020.

Net profit margin can be defined as net Income as a portion of total sales revenue.