Although not all water heaters have this feature, “VAC” refers to the appliance’s “Vacation Mode” program. It allows the system to lower the water heater temperature setting and conserve energy while you’re away.
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Read more: https://www.usawaterquality.org/vac-mean-on-a-water-heater/
#usawaterquality #waterheater
Read more: https://www.usawaterquality.org/vac-mean-on-a-water-heater/