What type of pilot light burns continuously throughout the entire time the burner is in service?

The correct answer is a continuous pilot. A continuous pilot light is designed to burn continuously while the gas burner is in operation. It provides a constant flame that ensures the gas is ignited as soon as the burner is called to operate. This type of pilot is particularly important for older systems that rely on a constant flame to ignite the gas when there is a demand for heat.

Continuous pilots are typically found in older gas appliances, where the pilot flame is always lit to ensure immediate ignition of the main burner gases. The continuous operation of the pilot flame offers reliability in heating systems where rapid response time is necessary.

In contrast, intermittent pilots light only when the system calls for heat and go out afterward, making them more energy-efficient as they do not burn continuously. Standing pilots are also similar to continuous pilots but may be referred to in some contexts as simply a pilot that stays lit. Electronic ignition pilots use a different mechanism entirely, igniting gas only when needed and are more common in modern appliances due to their efficiency.

Therefore, understanding the distinction among pilot types is essential for proper maintenance and operation of gas-burning appliances, leading to energy savings and improved safety.