What a Boiler Service Report Should Include for London Rental Properties
When a Gas Safe registered engineer carries out an annual boiler service at a London rental property, they should provide a written report documenting what was inspected, what was found, and what action was taken. Understanding what a comprehensive boiler service report should contain helps London landlords assess the quality of the service they are receiving and identify whether their current provider is meeting the required standard.
The Difference Between a Boiler Service and a Gas Safety Check
London landlords sometimes use the terms boiler service and gas safety check interchangeably, but they refer to different activities. A gas safety check is a legally required annual inspection that assesses whether all gas appliances in the property, including the boiler, are safe to use. It involves checking the safe operation of each appliance, testing for gas tightness, checking flue performance, and confirming that the installation does not pose a danger of carbon monoxide poisoning or gas explosion. The result is a Gas Safety Record that the landlord is legally required to provide to the tenant.
A boiler service is a more thorough maintenance procedure that focuses specifically on the boiler and aims not just to confirm that it is safe but to optimise its performance and identify components that are approaching the end of their service life before they cause a breakdown. A full boiler service takes longer than a gas safety check and involves dismantling parts of the boiler for inspection and cleaning. Many Gas Safe registered companies combine the annual gas safety check and boiler service into a single visit, which is the most efficient approach for London landlords.
What the Boiler Service Report Should Document
A comprehensive boiler service report for a London rental property should document the make, model, and serial number of the boiler and the date of the service. It should record the results of each check carried out during the service, including the gas inlet pressure, the gas rate (the volume of gas consumed by the boiler per hour at maximum output), the burner pressure, the flue gas analysis results showing carbon dioxide percentage and flue gas temperature, the condition of the heat exchanger, the condition and cleanliness of the burner and injectors, the operation of all safety devices including the high limit thermostat and pressure relief valve, the condition of the ignition components, the operation of the automatic controls and programmer, and the condition and clearance of the flue terminal.
The report should also record whether any components were cleaned, adjusted, or replaced during the service visit, and should note any defects found that require follow-up attention. A boiler service report that simply states that the boiler was serviced and found to be in good working order, without recording the specific measurements and observations, is not an adequate service record for a London rental property and does not demonstrate that a thorough service was carried out.
Gas Rate and Combustion Analysis: Why They Matter
Two of the most important measurements recorded during a London rental property boiler service are the gas rate and the combustion analysis results. The gas rate is the volume of gas consumed by the boiler at full load, measured in cubic metres per hour and compared against the manufacturer specification. A gas rate that is significantly above or below specification indicates a combustion fault that could affect both boiler efficiency and safety. The combustion analysis measures the percentage of carbon dioxide in the flue gas and the flue gas temperature, from which the boiler combustion efficiency can be calculated. A boiler running with low combustion efficiency is wasting gas and increasing the London landlord energy bills paid by tenants, and may also be producing elevated levels of carbon monoxide.
The flue gas analysis results should be recorded in the boiler service report along with the acceptable range for the specific boiler model. If the results are outside the acceptable range, the engineer should adjust the gas valve and re-test until the combustion is within specification, or note the required remedial action if the fault cannot be resolved during the service visit. Prestige Engineers record full combustion analysis data on every boiler service report issued to London landlords and property managers, providing a baseline for comparison at each subsequent annual service.