What can be a consequence of failing to service combustion appliances regularly?

Failing to service combustion appliances regularly can lead to a higher risk of malfunction and hazards. Regular maintenance is essential to ensure that these appliances function safely and efficiently. When appliances are neglected, issues such as carbon buildup, gas leaks, or wear and tear can go unnoticed, significantly increasing the likelihood of accidents such as fires or carbon monoxide poisoning. Regular servicing can help identify and rectify these potential hazards before they escalate into serious safety concerns.

The other options do not accurately reflect the consequences of neglecting service on combustion appliances. Aesthetic value, reduced repair costs, and extended warranty coverage are not directly tied to the regular servicing of combustion appliances and can lead to a misunderstanding of the importance of maintenance in ensuring safety and functionality.