There are a number of reasons. First, over time deposits build up in your boiler that make it less efficient. These deposits can then harden over time and actually damage your boiler leading to an expensive repair bill if not regularly serviced. Secondly, having your boiler regularly serviced can reduce its running costs by up to 10% a year. Most importantly, it keeps your boiler running safely and protects your family from carbon monoxide emissions.
Appliances should be inspected, cleaned and components replaced as required when the appliance is being serviced. Cleaning your appliance gives an opportunity to look for other tell-tale signs that parts may need replacing. If your appliance is not serviced annually, it is at a higher risk of breaking down and costing you more money in the long run.