Rodent Damaged Pool Heater Repair

Rodent Damaged Pool Heater Needed Replacement

Michael LaCouture / Author – Owner

Rodent Damaged Pool Heater . Rodents can pose a threat to your pool and spa heater, causing damage that may lead to malfunctions or even complete failure.
Here’s a step-by-step guide on how rodents can damage your pool and spa heater and how to address the issue:

1. Chewing on Wires and Insulation

Rodents, especially rats and mice, are known for their tendency to chew on various materials, including wires and insulation. This behavior can lead to electrical issues in your pool and spa heater.


  • Inspect the wiring and insulation regularly for signs of gnawing.
  • Use rodent-proof covers or wraps to protect exposed wires.
  • Consider applying rodent repellent around the heater.

2. Nesting in Components

Rodents may find the warm environment around the pool and spa heater appealing for nesting. They might build nests in crucial components, obstructing proper functioning.


  • Periodically inspect the heater for signs of nests or debris.
  • Use mesh or covers to block potential entry points for rodents.

3. Corrosion from Urine and Droppings

Rodent urine and droppings can lead to corrosion of metal components in your pool and spa heater. This corrosion can affect the efficiency and longevity of the heater.


  • Clean any rodent droppings promptly using gloves and a mask.
  • Apply a mild cleaning solution to sanitize affected areas.
  • Consider placing deterrents near the heater to discourage rodents.

4. Blocking Ventilation and Airflow

Rodents may inadvertently block ventilation openings and airflow paths, causing overheating issues in the pool and spa heater.


  • Regularly check for obstructions around the heater’s vents.
  • Trim vegetation and remove debris that could attract rodents.
  1. Have you noticed any unusual sounds or signs of rodents near your pool and spa heater?
  2. When was the last time you inspected the heater for potential rodent damage?
  3. Are there any specific areas around the heater that rodents might find attractive for nesting?

By addressing these issues proactively, you can mitigate the risk of rodent damage to your pool and spa heater and ensure its optimal performance.

A good longtime service customer called to let me know his heater was not working. He lives in a remote area. When I opened up the heater doors, I knew right away the heater needed to be replaced. The rodents chewed everything up leaving the heater in operable. We replaced the Pentair rodent heater with a Jandy rodent proof JXI.

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