All Set Service is a licensed HVAC company serving Orange County, California. We understand homeowners and small businesses have many heating and cooling options. Below we explain the most common HVAC system types, how they work, and when each is ideal. All Set Service installs and services all these system types, so you can trust our team with any heating and cooling setup.
Types of HVAC Systems
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Split (Central) Systems: These are the traditional whole-house systems. An outdoor condenser unit cools the air, while an indoor furnace or air handler provides heating through ducts. A single thermostat controls both. In Southern California’s mild climate, split systems often use electric heat pumps that move heat in or out rather than burning gas. This makes them energy-efficient for year-round comfort. Split systems are ideal for most single-family homes and small offices.
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Ductless (Mini-Split) Systems: Ductless mini-splits heat or cool without any ductwork. Each indoor zone has its own wall-mounted air handler connected by a refrigerant line to an outdoor compressor. You can install one indoor unit per room (or multiple heads on one outdoor unit), giving precise zone control. Ductless systems are perfect for room additions, garages, or buildings without ducts, and they work well in multifamily homes or small commercial spaces.
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Packaged (Rooftop) Units: These systems house all heating and cooling components in a single outdoor cabinet. Often placed on a roof or on a slab by the building, they connect to the ductwork through one wall. Packaged units save indoor space and simplify installation because everything is in one box. They are common in light commercial buildings or homes without basements. Because of the compact design, packaged systems are easier to install and service while still providing full comfort.
Regardless of the type you choose, All Set Service installs and services all these HVAC systems. We are based in Huntington Beach and serve Orange County cities like Irvine, Costa Mesa, Newport Beach, Santa Ana and beyond. Whether you need a central split system, a ductless mini-split, or a rooftop packaged unit, our licensed team will provide the right HVAC installation in Orange County and keep it running smoothly.