BTU Calculator

Calculate the right air conditioner size for your room based on dimensions and conditions.

Room BTU Calculator

Room Dimensions

Room area: 144 sq ft

1510

How to Size Your Air Conditioner

Proper sizing is crucial for efficient cooling. An air conditioner that's too small won't cool effectively, while one that's too large will cycle on and off too frequently, wasting energy and failing to dehumidify properly.

Factors That Affect BTU Requirements

Room Size

The primary factor. Larger rooms need more cooling capacity.

Ceiling Height

Higher ceilings mean more air volume to cool, requiring additional BTUs.

Sun Exposure

Rooms with lots of sunlight need 10% more capacity. Shaded rooms need 10% less.

Room Type

Kitchens generate extra heat from appliances and need additional cooling capacity.

Occupancy

Each person adds about 600 BTU of heat. More people = more cooling needed.

Common Mini-Split Sizes

6,000 BTU:Up to 250 sq ft (small bedroom, office)
9,000 BTU:250-400 sq ft (bedroom, small living room)
12,000 BTU:400-550 sq ft (master bedroom, medium room)
18,000 BTU:550-800 sq ft (large living room, open area)
24,000 BTU:800-1,000 sq ft (very large room, multiple rooms)

Why Choose a Mini-Split?

  • Energy Efficient: Up to 30% more efficient than traditional AC
  • Flexible Installation: No ductwork required
  • Zone Control: Cool only the rooms you're using
  • Quiet Operation: Indoor units are whisper-quiet
  • Year-Round Comfort: Many models provide heating too

Ready to get the perfect system for your space?

Contact Vargas HVAC for a professional assessment and free quote. We'll help you choose the right mini-split system for your specific needs and ensure proper installation.