Designed for residential air conditioning and heat pump service, the VIVOHOME 4-Way Manifold Gauge Set supports traditional refrigerants and newer A2L options like R454B. Clear dual-unit gauges and a familiar 4-way layout help homeowners and HVAC professionals work with confidence. - The VIVOHOME 1/2 HP 5 CFM dual-stage vacuum pump ensures rapid, deep evacuation for AC and HVAC systems. Featuring dual inlet ports, built-in filtration, and motor protection, it supports multiple refrigerants and provides safe, stable performance. Dual oil ports and a clear sight glass make maintenance simple and convenient.