Why does an oven have exhaust?

1. To remove heat and steam: When you cook food in an oven, it generates heat and steam. This heat and steam can build up inside the oven and make it difficult to regulate the temperature. The exhaust helps to remove this heat and steam, so that the oven can maintain a consistent temperature and your food cooks evenly.

2. To prevent grease and smoke buildup: When you cook food in an oven, grease and smoke can be produced. These grease and smoke can build up on the inside of the oven and cause a fire hazard. The exhaust helps to remove this grease and smoke, so that your oven stays clean and safe.

3. To improve air quality: The exhaust in an oven helps to improve the air quality in your kitchen by removing harmful pollutants, such as carbon monoxide, nitrogen dioxide, and particulate matter. These pollutants can be released when you cook food, and they can be harmful to your health if you breathe them in.

4. To comply with safety regulations: In many countries, ovens are required to have exhausts for safety reasons. These regulations are designed to prevent fires and other accidents caused by the buildup of heat, steam, grease, and smoke in ovens.

In short, the exhaust in an oven serves multiple purposes, including removing heat and steam, preventing grease and smoke buildup, improving air quality, and complying with safety regulations.