❄️ HVAC BTU Calculator
Calculate required BTU for room air conditioning and heating systems.
About HVAC BTU Calculator
Determine the correct BTU rating for your air conditioner or heater based on room size, ceiling height, sun exposure, number of occupants, and climate zone. Proper HVAC sizing ensures efficiency and comfort.
Features
- Room dimensions input
- Sun exposure and occupants
- Climate zone adjustment
Frequently Asked Questions
What is BTU in AC?
BTU (British Thermal Unit) measures cooling capacity. Higher BTU means more cooling power. A 1-ton AC = 12,000 BTU/hr. Our calculator recommends the right size for your room.
How many BTU per square foot?
General rule: 20 BTU per square foot for average conditions. Adjust for ceiling height, sun exposure, number of windows, and local climate for accurate sizing.
What happens with wrong BTU AC?
Undersized AC runs continuously without reaching temperature. Oversized AC short-cycles, wastes electricity, and fails to remove humidity properly. Correct sizing is crucial.