Potterton Boiler Installation in Chislehurst – Back Boiler Replacement

Our client in Chislehurst contacted us regarding their aging back boiler system, which had become increasingly unreliable during the colder months. Back boilers, once common, are notoriously difficult to maintain due to their location behind the fireplace, which often leads to poor heat distribution and high energy consumption. The system was struggling to maintain consistent water temperatures, and the homeowner was concerned about the potential for carbon monoxide leaks from the antiquated flue configuration. Upon our initial inspection, we identified significant signs of corrosion and sludge buildup within the pipework, which was severely restricting the flow of the central heating system. The burner assembly was also showing signs of degradation, making it impossible to source compatible replacement parts. Given the lack of spare parts and the inherent inefficiency of the legacy setup, it was clear that a complete system upgrade was the only viable and safe long-term solution for the homeowner.

Our engineering team began by carefully isolating the gas and water supplies to safely decommission the old unit. We removed the back boiler assembly and associated flue, ensuring all debris was cleared from the chimney breast. The system required a thorough power flush to remove the historical sludge buildup, protecting the new boiler from future circulation issues. We then installed a modern Potterton Promax system boiler, chosen for its reliability and compatibility with the home's existing radiator network. Following the installation, we fitted a magnetic system filter to capture any remaining metallic particles and ensure long-term longevity for the boiler’s internal components. We completed a comprehensive commissioning process, which included checking the gas pressure, testing the flue gas analysis (FGA) readings to ensure perfect combustion, and calibrating the digital thermostat for optimal energy efficiency. The system was balanced to ensure even heat distribution across every radiator in the property.