Jacuzzi pool heater makes loud banging or popping noises during operation.

Safety first: Turn off power and gas. Allow the heater to cool before touching any components.

Steps to address noise:

• Check water flow: Clean the pool filter and ensure valves are fully open. Verify pump speed is adequate for the Jacuzzi heater’s minimum flow requirement.
• Bleed air: If the system has air bleeders, use them to purge trapped air from the heater and plumbing.
• Descale heat exchanger (professional): Kettling often indicates internal scale. A pool professional should chemically descale or replace the heat exchanger using Jacuzzi-approved procedures.
• Verify gas input: Have a licensed gas technician confirm that gas pressure and orifice sizing match Jacuzzi specifications.