There are a few ways to do that, depending on what your overall goal is. If all you want to do is get a sense of how much power those systems are using on average, you can contact an HVAC technician and ask for help. They can perform some tests to give you an overview of your energy use.
You can also run a test by yourself. Pick a day when the business is closed, shut off all other devices in the building, and then leave the HVAC systems running for an hour. You can take pictures of your energy meter before and after to see exactly how much power those systems are using per hour.
However, if your goal is to constantly monitor energy consumption, you’re going to need some building management solutions (BMS). As the Publicstar homepage shows, BMS controls can be used to not only turn HVAC systems on and off from afar but also to monitor how much power they’re using.
