What should be installed if a system has a non-bleed type TXV?

In a residential air conditioning system using a non-bleed type thermal expansion valve (TXV), a hard start kit is essential if the compressor has difficulties starting or experiences issues related to starting torque. Non-bleed TXVs do not allow refrigerant to flow through the valve when the system is not running, meaning that they can create a vacuum when attempting to start the compressor. This vacuum can make it challenging for the compressor to initiate operation, leading to inadequate performance or possible system failure.

A hard start kit provides additional starting torque to the compressor, ensuring that it can overcome any initial resistance when it starts up. This is especially crucial in systems equipped with non-bleed TXVs because the lack of pre-charged refrigerant in the suction line can make it more difficult for the compressor to start under certain conditions. In summation, the installation of a hard start kit helps to enhance the reliability and efficiency of the system in conjunction with a non-bleed TXV configuration.