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Microbore central heating problems stem from a simple physical reality: While a well-maintained microbore system with clean water and a magnetic filter can work for decades, once sludge takes hold, repairs become expensive and often temporary. For homeowners facing recurrent issues, replacing the microbore runs with standard 15mm pipe—though disruptive—is ultimately the most cost-effective long-term solution.
If you are buying a house or troubleshooting your current home, check for these signs of a failing microbore system: microbore central heating problems