Despite the energy savings of evaporative cooling, air conditioning is the better choice in many situations. Here's when AC makes more sense:
Climate factors:
Choose AC if you live in:
- Humid climates (Southeast US, Gulf Coast, coastal areas)
- Regions where summer humidity regularly exceeds 50%
- Areas with long monsoon seasons
- Tropical or subtropical climates
In these conditions, evaporative coolers simply don't work effectively and may make indoor conditions worse by adding humidity.
Health considerations:
AC is better for people with:
- Respiratory conditions (asthma, COPD)
- Dust or mold allergies
- Sensitivity to humidity changes
- Need for filtered, controlled air
Evaporative coolers bring in outside air and add humidity, which can aggravate certain conditions. AC filters and dehumidifies the air.
Lifestyle preferences:
Choose AC if you:
- Want precise temperature control (set it and forget it)
- Need a completely sealed, secure home
- Want to reduce outdoor noise and pollution
- Prefer minimal maintenance
- Don't want to manage window opening/closing
Property considerations:
AC may be necessary if:
- Your home has no roof access for a cooler
- HOA restrictions prohibit visible coolers
- You have valuable items sensitive to humidity (art, instruments, electronics)
- You rent and can't install permanent equipment (window AC works)
Regional expectations:
In some markets, homes without AC are harder to sell. If resale value matters, central AC may be expected regardless of climate.
The hybrid approach:
Many homeowners in dry climates have both systems:
- Use evap cooling most of the summer (saves money)
- Switch to AC during monsoon or when guests prefer it
- Best of both worlds, with some added complexity
Cost-benefit analysis:
If your electricity costs are low, the savings from evaporative cooling may not justify:
- Learning a new system
- Managing ventilation
- More frequent maintenance
- Reduced cooling during humid periods
Bottom line:
Air conditioning is the right choice when climate, health needs, or lifestyle preferences make evaporative cooling impractical or uncomfortable. There's no shame in choosing AC—it's a proven technology that works everywhere.