Central Air Conditioning
Traditional split-system cooling for whole-home comfort through ductwork.
About Central Air Conditioning
Central air conditioning is the most common cooling system in American homes, using a split system with an outdoor condenser and indoor evaporator coil connected to existing ductwork. It provides consistent, whole-home cooling with options ranging from basic single-stage to premium variable-speed systems.
Pros
- Whole-home cooling through existing ductwork
- Consistent temperatures throughout the house
- Quiet operation (especially variable-speed models)
- Many brands and contractors available
- Humidity control built in
- Can be paired with any heating system
Cons
- Requires ductwork (expensive to install if missing)
- Duct losses reduce efficiency by 25-30%
- No heating capability (cooling only)
- Outdoor unit requires yard space
- Higher energy bills in hot climates
- Single thermostat for whole house (no zones without extra equipment)
Best For
- Homes with existing ductwork
- Families wanting whole-home cooling
- Humid climates needing dehumidification
- Homeowners planning to stay long-term
- Larger homes over 1,500 sq ft
Popular Central Air Conditioning Brands
Frequently Asked Questions
How long does central AC last?
With proper maintenance, central AC systems last 15-20 years. Coastal environments with salt air may shorten lifespan to 12-15 years.
What size central AC do I need?
Typically 1 ton per 500-600 sq ft, but a Manual J load calculation accounts for insulation, windows, climate, and more for accurate sizing.
How much electricity does central AC use?
A typical 3-ton central AC uses 3,000-3,500 watts per hour. At $0.15/kWh, that is about $0.50/hour or $80-$150/month in peak summer.
System Capabilities
Other Systems
Estimate Your Cost
Use our calculator to estimate Central Air Conditioning costs for your home.
Cost Calculator