Your boiler should be serviced every year by A Gas Safe Registered Engineer. They should insure that all areas of the boiler are checked for correct operation and cleaning of the heat exchanger should this be necessary.
When servicing a boiler there are many factors that need to be considered, which not all Engineers carry out. At TTPP we always carryout all the necessary checks to insure your boiler is working both safely and correctly. Your Gas installation will be checked for leaks as a minimum, then your appliances can be cleaned and checked for correct operation. On completion you will receive a service certificate detailing all relevant information.