Which safety features are commonly included in modern furnaces?

Modern furnaces incorporate a variety of safety features to ensure safe and efficient operation. The inclusion of flame rollout switches and overheat sensors is essential for preventing hazardous conditions.

Flame rollout switches are designed to detect when flames escape the combustion chamber, which can occur due to blockages or malfunctions. If this happens, the switch will shut down the furnace to prevent possible fires or further damage to the unit. Overheat sensors serve a similar purpose; they monitor the temperature of the furnace components and can deactivate the system if it begins to overheat, thereby protecting both the furnace and the surrounding environment.

These features are critical in maintaining safety standards and ensuring that the furnace operates within its designed parameters. While pressure switches and air filters are important for system performance, they don't specifically address emergency shut-off functions related to flames or overheating. Humidity controls and thermostats serve operational roles rather than safety functions, and temperature gauges and manual shutoffs, while useful, do not provide the same proactive safety measures as flame rollout switches and overheat sensors.