BuildBudgeter

Split air conditioner

Cooling system with separated indoor and outdoor units connected by refrigerant and drain lines.

What a split AC system includes

A split system usually includes an indoor unit, outdoor condenser, refrigerant lines, condensate drain, power supply, controls, and fixings. Multi-split systems increase coordination because one outdoor unit can serve multiple indoor units, tightening routing and service constraints.

Where cost and risk really sit

The visible unit is only part of the budget. Cost also sits in line routes, drainage logic, wall or ceiling opening coordination, vibration control, facade impact, and access for replacement. Poor early positioning can make a simple AC system expensive to maintain for years.

What to inspect before close-up

  • Clear condensate falls and safe discharge points.
  • Indoor units located away from beam conflicts, curtain pockets, and hard-to-service joinery zones.
  • Outdoor units placed for realistic maintenance, not only for installation speed.

Best-fit use case

Split AC is usually the practical baseline for standard residential projects or room-by-room cooling where a full ducted solution would not justify its ceiling, balancing, and coordination burden.

Used in project stages

Explore in the product

See also

Related cost packages

FAQ

What is the most common split AC construction mistake?

Bad condensate routing is one of the most common failures. A unit may cool well at startup but still overflow later because the drain line has flat runs, hidden sags, or no safe cleaning access.