Home design is the most crucial element to examine when determining zones. Look for parts of the home that might have significantly higher or lower loads than other parts. Hot air rises, so if you have a multi-story home, separate zones should be used for separate floors. Rooms with lots of windows or large doorways will also likely need separate zones.

Consider room use. Rooms that are used for different functions or at different times of the day should be zoned separately. Bedrooms and living areas should be separate zones, as bedrooms are used mostly in the morning and night, whereas living areas are used during the day and evening. Typically, most homes will have separate zones for the master suite, other regularly used bedrooms, and living areas.

If you are unsure your amperage, you can check your electric panel. The amperage rating is usually printed on the main breaker or on a label inside the panel door.