1. Keep hot tub cover closed and locked in place.
2. Leave tub filled and running (do NOT drain or disconnect power).
3. Cover the equipment compartment with a blanket, this will keep your equipment compartment warm, prevent freezing, and adds an extra layer of insulation.
4. If you have power but the hot tub stops working: Place an electric space heater in the equipment compartment and be sure the heater is not in direct contact with any plumbing or equipment.
Hot Tubs are not only fully foamed, but also totally insulated. Should you lose power, simply leave your hot tub covered until power resumes.