Hello,

A project I'm building the energy model for is considering switching to electric heat. I understand that generally you would use the predominant HVAC system, so if the "predominant" system is electric, you would use System 8. See highlighted excerpt below.

My question to you is: what qualifies as "predominant"? Is there some percentage of energy consumption assigned to gas and electricity that signifies either as being dominant?

Thank you for the clarification.

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Nicholas E Blanton