Split System Schematic (HVAC): What You Need To Know

Split system HVAC, also called a home comfort system or central heating and air-conditioning system, is essential to keeping a home warm in the winter or cool in the summer. It also can provide protection from allergens and pollutants year round. A split system typically has five main parts:

1. Indoor unit, such as a furnace or an air handler
2. Outdoor unit, either an air conditioner or a heat pump
3. Thermostat, programmable or nonprogrammable
4. Indoor air quality component, like a filtration system or humidity control product
5. Ductwork that allows conditioned air to move from equipment to rooms inside the home