Vaillant Boiler Installation in Chislehurst – Efficiency Upgrade

Our team received a call from a homeowner in Chislehurst regarding a legacy boiler that had finally ceased to function. Upon arrival, our Gas Safe engineer conducted a thorough inspection of the unit, which had been suffering from intermittent ignition failures and significant pressure loss for several weeks. The heat exchanger was heavily corroded, and the internal pump had seized, causing the system to lock out repeatedly. After dismantling the outer casing and testing the electrical components, we found that the primary control board was also malfunctioning, resulting in erratic burner cycles. Given the age of the appliance and the scarcity of original spare parts, we advised the client that pursuing further repairs would not be cost-effective. The system was clearly beyond its serviceable life, posing a potential safety risk and failing to provide consistent central heating or hot water for the property.

We recommended the installation of a new Vaillant ecoTEC plus boiler to replace the obsolete unit. Our engineers began by safely draining the entire heating circuit and flushing the pipework to ensure no debris remained that could damage the new equipment. We carefully removed the old boiler and prepared the wall area, ensuring all flue penetrations met current building regulations and safety standards. Once the new Vaillant unit was securely mounted, we connected the gas supply, flow, and return pipework, ensuring all joints were pressure tested. We installed a high-quality magnetic system filter to protect the new heat exchanger from magnetite buildup. After finalizing the installation, we commissioned the boiler, set the gas valve to the correct CO2 combustion ratios, and performed a thorough tightness test on the gas supply. Finally, we balanced the radiators to ensure the new system operated at peak efficiency throughout the home.