? Welcome??? We are committed to providing customers with better and more favorable products!!! Thank you for your support. The pool heat exchanger is made of 304 stainless steel that has good rust and salty water resistance, so it is more durable and has a long service life. The pool heat exchanger is based on the 60°C (140°F) temperature difference between the incoming water and the hot water, delivering 135 kBtu of heat in one hour, so it is of high efficiency. The pool heat exchanger uses an innovative spiral-wound design to ensure a constant temperature. It is very suitable for pools, spas, hot tubs, solar energy, hydraulic heating, oil cooling, heat recovery, snow melting, etc. 1 Stainless Steel Heat Exchanger. High Durability: The pool heat exchanger is made of 304 stainless steel that has good rust and salty water resistance, so it is more durable and very suitable for chlorine or salt water swimming pools and spas. High Efficiency: The pool heat exchanger is based on the 60°C (140°F) temperature difference between the incoming water and the hot water, delivers 135 kBtu of heat in one hour, so it is of high efficiency. Innovative Design: The pool heat exchanger uses an innovative spiral-wound design to ensure a constant temperature. High Compatibility: It transfers heat indirectly between any hot water circuit, steam circuit, and any pool or spa facility. Rapid Heating: With an output of 135 KBtu per hour, this pool heat exchanger ensures the pool gets hot quickly without waiting, saving your time and energy. Healthy and Hygienic : This heat exchanger is a non-storage type, where the hot and cold fluids have separate channels and do not mix with each other. This design ensures that the water source is clean and free of contamination. Easy to Clean: Because of its smooth surface and few crevices, it can be easily cleaned with a damp cloth without much effort and time. We will reply and solve the problem for you as soon as possible. Side of Hot Water Pipe: 2.54cm/1in FPT. Same Side Port: 3.81cm/1.5in FPT. Product Size: 3314cm/135.5in. Packing Size: 401919cm/15.757.487.48in. Weight: 3.4kg/7.5lbs. Material: 304 Stainless Steel. Heat Transfer Area: 3.2ft². Hot Water Flow Rate: 25 L/min. Cold Water Flow: 200 L/min. Spiral Wound Design: The spiral wound design of the pool heat exchanger effectively ensures the constant temperature when working. Food-grade Material: The pool heat exchanger is made of 304 food-grade stainless steel that is healthy to use. 1 1/2″ FPT is used for one side of the pool water and 1″ FPT is used for hot water. Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before ordering. Feedback is very important to us. It is impossible to address issues if we do not know about them! Faction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it’s non-workdays, please kindly be patient and wait till Monday. 3.81cm/1.5in FPT. Side of Hot Water Pipe. 401919cm/15.757.487.48in. Hot Water Flow Rate. Gas / Wood / Solar / Heat Pump / Electricity.