A boiler that is not serviced at all, or irregularly, will develop serious problems in the long term, but regular maintenance and servicing will prevent breakdowns and extend the life of the boiler. A faulty boiler may be leaking carbon monoxide and this is poisonous and deadly. According to the Department of Health and Science, carbon monoxide poisoning sends 4,000 people to A&E each year. But, this is preventable by frequent servicing of your boiler. A fully-functional boiler will also save you money on repairs and energy bills and is also important to meet insurance policy requirements and most insurance companies require your boiler be safe to use. Annual servicing of your boiler is also in compliance with the law as landlords and businesses are legally required to have annual safety checks carried out.