A properly functioning pool heater is essential for maintaining water comfort and extending the swimming season. For pool owners using a Laars or Teledyne Laars pool heater, understanding the system’s operation and basic troubleshooting techniques can save time and reduce repair costs. Laars pool heaters are known for their reliability and efficiency, but like any equipment exposed to outdoor conditions, they may occasionally require maintenance or inspection. Recognizing early signs of malfunction and addressing them promptly helps ensure consistent performance and protects your investment. This guide provides a complete overview of Laars pool heater troubleshooting, offering practical steps to identify common issues, maintain system components, and know when professional s