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The Hayward GL-235 is a differential temperature control designed for solar heating applications in pools and spas. It features an adjustable water temperature high limit, automatic nocturnal cooling, and recirculation freeze protection. This control is capable of managing both heating and cooling efficiently for optimal comfort.
The GL-235 automatically maximizes heating from solar energy while providing an easy-to-use interface for temperature management.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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