Why Does Solar Pool Heater Need Solar Pool Heat Exchanger? Are you looking for a solar pool heat exchanger? Have a pool or spa with an additional amount of chlorine and bromine? If yes, then a flat plate solar heat exchanger isn’t suitable for you. This is where a specially designed high flow heat exchanger comes in handy. It can be able to handle the higher secondary side flow and high levels of This heat exchanger has chlorine. better flow characteristics; so it makes a good alternative to a solar pool heating system. If you’re using a pool heater for applications that use salt water, it’s suggested to use a titanium solar pool heat exchanger. This heat exchanger is highly resistant to chlorine and saltwater.