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    Home < Air Pressure Switches

    Air Pressure Switches

    Air pressure switches are essential elements in boilers for safety and control devices, they are used to monitor the airflow and/or pressure within the system. The air pressure switch ensures that the proper amount of air is there in order for combustion which prevents the boiler from firing if the pressure is too low or too high. By the air pressure switch detecting safe pressure levels, it helps to protect the boiler from any damage, enhance safety, and prevent inefficient combustion. These switches are vital for maintaining optimal boiler operation and reduces the risk of hazardous malfunctions.   

    Why choose National Boiler Spares?  

    Here at National Boiler spares, we are a trusted source for high-quality boiler parts and accessories. We offer several key benefits that make us the ideal choice for your boiler needs.   

    National Boiler Spares stocks a wide range of air pressure switches for many brands and manufacturers including Baxi, Worcester, Vaillant, Ideal, Glowworm and more. Try shopping our range by using our search bar above to find your specific boiler air pressure switches by parts or GC number with ease. 

    Air Pressure Switches – FAQs  

    What is the purpose of an air pressure switch?  

    An air pressure switch is there to monitor and control the air pressure to improve safety and operation.  

     Are all air pressure switches the same?  

    There are a wide variety of air pressure switches as there are a wide variety of pressures that need to be measure inside a boiler.   

    What are the two types of air pressure switches?  

    The two main types of air pressure switches are mechanical and electronic. A mechanical switch is categorized by the form and construction of their pressure-sensing components. The electronic switch is a solid-state device that operates indirectly using capacitance and resistance properties instead of requiring direct actuation.     

    How do I know if my pressure switch is bad?  

    There are multiple ways in which you can tell if a pressure switch is bad. These include:  

    • Not turning on when the tank’s pressure drops  
    • Not turning off when the tank’s pressure exceeds the preset cut-off pressure  
    • Short cycle  
    • Running while the water pressure is low Â