If you aren't ready to build your own, there are thousands of templates available online. However, be cautious:
For practical application, the following formats and standards are widely used in the industry as of 2021 and beyond: hvac calculation excel sheet 2021
Also, you can give me more details about the specific requirements of the essay (e.g. specific length, specific focus, etc.) if you want me to make it more tailored to your needs. If you aren't ready to build your own,
