When should a complete check of the boiler heating system be performed?

A complete check of the boiler heating system is essential at the end of the heating season. This timing is crucial for several reasons. After the heating season, a thorough inspection allows for the identification of any wear and tear or damage that may have occurred during operation. It provides an opportunity to address any issues while they are still fresh and ensures that the system is well-maintained, which can help prevent problems in the upcoming heating season.

Additionally, inspecting the system after it has been used allows for cleaning and necessary repairs, ensuring optimal performance the following season. This proactive approach to maintenance is critical for extending the lifespan of the boiler and enhancing its efficiency.

The other options, while also suggesting important times for checks, do not capture the urgency and necessity of performing a complete system check after the season's end. Regular maintenance and checks at the start of the heating season are essential but may not address issues that have developed during the previous season. Monthly inspections could be excessive and might not yield additional benefits compared to comprehensive seasonal checks. Therefore, performing a complete check at the end of the heating season stands out as the most advantageous timing for maintenance.