Professional Digital Electric Pool Heater for Hot Tubs and Spas with Temp Control. High COP Efficiency: COP exceeds 5.0 with patented defrost technology for superior heat exchange. Titanium Heat Exchanger: Durable titanium construction resists corrosion and ensures long-term performance. Safety Design: Full separation of water and electricity eliminates leakage risks. Customization Options: Offers full, minor, and flexible customization from samples or designs. Fast Delivery: Samples dispatched in 5-7 days; bulk production in 3-4 weeks. Multiple Certifications: Holds CE, ROHS, FCC, and ERP certifications for global compliance. Versatile Control: Available with both digital and knob controller options.