BTUCalculator: HVAC Sizing

TipTinker

Contains adsIn-app purchases

About this app

BTUCalculator helps you size an air conditioner or heater for a room before you shop, using the room's dimensions, sunlight, local climate and how the room is used.

• Enter length, width and ceiling height in feet or meters; switching units converts the values you already typed
• Pick cooling, heating or all-season sizing
• Adjust for shaded, average or sunny rooms and for mild, mixed, hot-summer or cold-winter climates
• Add people who regularly use the room and a kitchen to the cooling load
• See the recommended standard unit size in BTU or kW, the cooling and heating loads and approximate tonnage
• Follow a step-by-step breakdown from the floor-area base load to the final total
• Cooling base taken from a published room air-conditioner sizing chart for the same floor area
• Start from bedroom, living area, home office or bonus room presets
• Save rooms, reload them later and add the selected rooms up in a whole-home total with a central-system estimate
• Share a room estimate or the whole-home summary

Results are planning estimates; ask an installer for a full load calculation before a final purchase.

What’s new

Performance improvements and bug fixes