What is the lowest and highest air temperature that should be used for an electric forced-air system?

The lowest air temperature for an electric forced-air heating system is typically around 60°F (15°C), as lower temperatures can lead to inefficient heating and increased energy consumption. The highest temperature generally should not exceed 75°F (24°C) to ensure comfort and prevent overheating in the space. Operating within this range helps maintain efficiency and prolongs the system's lifespan. Always refer to the manufacturer’s guidelines for specific recommendations.