This Full DC Inverter heat pump is capable of operating down to -10°C ambient temperature. This feature-packed high-performance model is a great choice due to its compact size. A new model for 2023, we believe will become the most popular option for hot tubs. Upgrade your hot tub with the Vian C5+ Air Source Heat Pump and experience an efficient and eco-friendly way to keep your water warm and inviting. With its advanced technology, the Vian C5+ can maintain the perfect temperature all year round, while reducing your energy costs and environmental footprint. So why settle for a traditional heating system when you can enjoy the comfort and convenience of the Vian C5+? Get yours today and make your hot tub the ultimate relaxation destination.