HVAC Air Handling Units Market Size By Type (Modular, Custom, Packaged, DX Integrated), By Working Principle (Draw Through, Blow Through), By Capacity (Up to 5,000 m³/hr., 5,000 m³/hr. to 15,000 m³/hr., 15,000 m³/hr. to 30,000 m³/hr., 30,000 m³/hr. to 50,000 m³/hr., Above 50,000 m³/hr.), By Application (Residential, Commercial, Industrial, Healthcare), COVID-19 Impact Analysis, Regional Outlook, Growth Potential, Price Trends, Competitive Landscape & Forecast, 2022 - 2028