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The Bard 8620-245 is an OEM TXV upgrade kit designed to improve refrigerant metering control on select Bard wall mounted units, including the I30A1D and I30H1D. A properly functioning thermostatic expansion valve helps maintain stable superheat at the evaporator, which supports consistent cooling performance and protects the compressor from floodback conditions tied to improper refrigerant feed. This Bard factory kit is a reliable choice when you are addressing TXV-related capacity complaints, replacing a failed valve, or updating an existing circuit to the correct Bard-approved configuration, and it is best installed by a qualified HVAC technician who can verify charge, airflow, and system operation after the upgrade.