Water leaking from the base of the SPRSUN pool heater.

Safety first: Turn off power and close water isolation valves before working on plumbing. Be aware of hot water.

• Identify source: Dry the area and observe where water first appears. Distinguish between clear condensate dripping from coil and continuous water from a fitting.
• Check unions: Tighten the plastic or PVC unions on the inlet and outlet using hand pressure plus a small additional turn; do not overtighten and crack them.
• Inspect for freeze damage: Look for splits in PVC pipes or fittings, especially after freezing weather. Replace damaged sections.
• Condensate vs leak: In humid weather, large amounts of condensate are normal. Ensure the condensate drain holes are clear so water can exit properly.
• Heat exchanger leak: If water is seeping from inside the cabinet or from the heat exchanger body, shut off water and contact a technician; the titanium heat exchanger may need replacement.