Hybrid Whirlpool water heater very noisy (compressor/fan) during operation

Safety first: Turn OFF power at the breaker.

Steps:

• Verify the heater is level in both directions; adjust shims or feet as needed.
• Inspect fan blades for debris and ensure they are not contacting housing.
• Tighten screws on fan shroud and compressor mounting brackets.
• Use foam or rubber isolators where refrigerant lines contact metal surfaces to reduce rattling.