An excellent job and report.

Following problems with our central heating not reaching full temperature a power flush was done. Following this the system was not working fully we changed the central heating cover provider and asked the new provider to replace our boiler.. At the end of the installation during the testing period the engineer could not get two of the radiators to get to full heat. He checked the thermostatic valves but could not improve the situation and advised this back to his office. Following this initial installation we were encountering a drop in the pressure when we had both the domestic hot water and central heating both on. Over a 12 to 24 hour period this was sufficient for the boiler to lock out which then required the boiler to be re-pressurised back to 1.5 bar. When this first occur I pressurised the boiler back to 1.5 bar but even with the central heating switched off we continued to loose pressure. I then left the central heating switched off and also isolated the radiators and pipework using the isolation taps on the flow and return on the central heating. This allowed us to still have domestic hot water and also with this configuration, the system pressure remained constant. I then rang our new service provider and asked them to make a return visit. Two engineers returned and isolated each radiator using the radiator valves and gradually brought them back into service. They also could not get the two radiators back to full heat and advised that the it would required all the pipework to be inspected which would require the carpeting, furniture and floorboards to be lifted and removed in 6 rooms to check the pipework for leaks or a blockage. This would be chargeable work and we would be responsible for any re-instatement costs as well . As we were getting to more mild weather the engineer confirmed that the system could be left with the central heating switched off and the radiators and pipework isolated with the flow and return taps. As this was going to involve major upheaval in our property and significant costs to identify the problems I was aware from the internet that there were Leak Detection companies who could use a number of methods using new technology to identify any leaks or blockages. Compared to costs exposing and accessing the pipework LDS costs were equivalent to 5 to 6 hours at the support companies rates. . I had also contacted our House and Contents Insurance and they advised that the trace and access clause did not apply as there was no visible evidence of leakage damage to the property. The LDS engineer, Mark, arrived promptly and we went through the history of the problem. He then systematically checked the system using both traditional and newer technology methods. At the end of his activity we discussed what he had found which was no evidence of a leak or damp. However, using the thermal imaging it identified the lack of heat to the 2 radiators was due to a blockage in the pipework in the kitchen. We advised Mark that we were planning to have our kitchen refurbished and he suggested that the existing pipework be capped of and new pipework be run from the boiler flow and return. As the boiler pipework runs near the kitchen this could then be programmed when the kitchen refurbishment is done. However, to be completely thorough as LDS could not identify any leak, Mark has asked us to run the central heating back up and see if there is a drop in pressure when the system is at full temperature. Finally ,a full and detailed report has been provided by email . Many thanks for an excellent job and report.