



A boiler that repeatedly loses pressure usually indicates a water leak in the system, a faulty pressure relief valve, or an issue with the expansion vessel. You can temporarily re-pressurise to 1–1.5 bar using the filling loop (your boiler manual will show how), but if pressure drops again within days, this indicates an underlying fault that needs attention. Ignoring recurring pressure loss can lead to boiler lockout and serious damage — call us for a proper diagnosis.



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