Carrier HH19ZA140 Limit Switch air bypass can prevent the

air bypass can prevent the pressure switch from closing

making it a staple for HVAC service kits and boiler repair applications across residential and commercial heating systems

38" WC set point

suitable for various HVACR applications

Each 16-ounce bottle provides enough concentrate for up to 10 typical maintenance cycles

Carrier HH19ZA140 Limit Switch air bypass can prevent theThe Carrier HH19ZA140 Limit Switch is a high precision safety component engineered for HVAC systems requiring an L140 40F thermal threshold. Designed with a normally closed circuit, this disc style switch is rated to open on a temperature rise at 140F and automatically reset when the temperature drops to 100F. As an OEM replacement part, it ensures seamless integration and maintains the original equipments safety ratings and system efficiencies. The