DC relay complete AC circuit

I am in the process of installing duct booster fans on my HVAC. I also have an existing “sail switch” that operates my humidifier that uses a DC to power a solenoid to turn on water flow. I’m considering attaching a DC relay to the sail switch to complete an AC circuit to turn on the duct booster fans. Is there any problem with doing this? I’m assume in a normally open relay getting DC […]

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