Yes, 15°F (-9.4°C) is too warm for a freezer with food in it. Freezers are designed to maintain much colder temperatures to keep food safe and properly preserved. The ideal freezer temperature for storing frozen food is 0°F (-18°C) or lower.
At 15°F, the freezer is not cold enough to effectively freeze and maintain the quality of the food. Food stored at this temperature is at risk of partially thawing, which can lead to bacterial growth and spoilage. Additionally, the texture and taste of frozen food may be negatively affected, and certain items may develop freezer burn.
To ensure the safety and quality of your frozen food, it's important to set the freezer temperature to the recommended level, typically 0°F (-18°C) or lower. This temperature ensures that bacteria growth is inhibited, and the food remains in a stable frozen state, preserving its taste and texture for an extended period. Always check the freezer temperature regularly using a thermometer to make sure it stays at the appropriate level.