The Zooz Heavy Duty 15A On/Off Switch (ZEN15) is one of the most reliable high-load Z-Wave switches we’ve tested, making it an excellent choice for safely controlling and monitoring larger 110V appliances within your smart-home or rental-property setup. Designed to handle up to 15 amps, it’s ideal for devices like central humidifiers, dehumidifiers, window AC units, sump pumps, or other power-hungry equipment where both automation and power-usage tracking are valuable. During our testing, the ZEN15 performed consistently with fast command response, accurate energy reporting, and stable Z-Wave Plus communication. Its sturdy build and internal overload protection add an extra layer of confidence when automating higher-load devices.

As with any smart device managing critical equipment, we recommend keeping the ZEN15 in a location not accessible to guests, since unplugging or relocating it could disrupt automations or disable safety-related functions. When installed properly, the Zooz Heavy Duty Switch is a dependable, powerful, and flexible tool for managing essential appliances in rental homes and primary residences alike.