In a boiler hot water system air must be?

In a boiler hot water system, air must be effectively removed to prevent the formation of air pockets, which can disrupt water circulation and reduce heating efficiency. Air can also lead to corrosion within the system and cause noise problems. To manage this, automatic air vents or manual bleed valves are often used to ensure that trapped air is released, maintaining optimal system performance and longevity. Regular maintenance is essential to keep the system free of air and operating smoothly.