PHOENIX METRO HEATING & COOLINGLicensed & Bonded · ROC 363306
Core Comfort service trucks in an Arizona neighborhood

CORE COMFORT HVAC · ARIZONA

Split Central HVAC Systems: Indoor and Outdoor Units

Understand how a split system separates indoor and outdoor components.

A split central HVAC system uses an outdoor condenser and an indoor air handler or coil connected by refrigerant lines. This is a common central system type in Phoenix-area homes.

Two installed outdoor central air conditioning condensers

What to know about split systems

  • Outdoor condenser plus indoor air handler or coil
  • Refrigerant lines connect the two components
  • Indoor unit typically in a closet, attic, or garage
  • Distributes air through a network of ducts
  • Available as cooling-only, heat pump, or paired with a furnace
Crane lifting a packaged central HVAC unit onto an Arizona roof

Is a split system right for your home?

  • Available indoor space for the air handler
  • Length of refrigerant lines between indoor and outdoor units
  • Existing ductwork condition and sizing
  • Electrical requirements for both components
  • Access for service of the indoor unit
Technician servicing an outdoor central air conditioner
Core Comfort technician installing an indoor central HVAC air handler

A LITTLE CLARITY BEFORE YOU DECIDE

Frequently Asked Questions

What's the difference between split and packaged systems?

A split system separates indoor and outdoor components; a packaged system combines them in one outdoor cabinet.

Which is more common in Phoenix homes?

Split systems are common, but the right choice depends on your home’s layout and space.

Can a split system heat and cool?

Yes — a split heat pump or a split AC paired with a furnace provides both.

Can you replace just the outdoor unit?

Sometimes, but matching indoor and outdoor components matters. We assess whether a partial or full replacement makes sense.

How do I get started?

Call (602) 960-2278 or use our Contact page.

Considering a Split System?

We assess your home’s space and ductwork to recommend the right system type.

Installed central HVAC air handler beside a water heater

Prefer to talk? Call (602) 960-2278.

Call Core ComfortSchedule consultation