The EcoFlow Wave 3 is a versatile, portable heat pump that functions as an air conditioner, heater, and dehumidifier, designed for small spaces up to 17 square meters. While it offers improved performance over its predecessor, it struggles to cool environments with direct sunlight and is best suited for well-insulated areas; it can achieve 6100BTU cooling and 6800BTU heating. Priced at $849, the unit provides decent efficiency but may be inadequate for larger spaces or extreme temperatures.