If you’re wondering what AC unit you’ll need for a home that’s 2,400 square feet, or for any specific square footage, you’ll find that the most commonly used calculation is actually relatively straightforward. That said, keep in mind that the square footage of a particular building is far from the only factor influencing the size of AC ... Many factors are involved when determining what size of an air conditioner or furnace would have the required power output to cool or heat your home. These factors include the extent of exposure to the sun and the outside air, the thickness, and type of outside wall insulation, the size, type and number of windows and outside doors, the ceiling height, etc. STEP 1: Determine how many BTUs of heating and tons of AC you need. Method 1: Manual J Calculation. The best way to determine the perfect HVAC unit size is to have a Manual J calculation done for your house. The Manual J calculation is the most precise measurement available because it considers factors like: Square footage; Climate zone; Ductwork Note: This calculator is meant to be used only as a general guide.Several factors may drastically change cooling BTU needs including, but not limited to:high ceilings, poor insulation, ambient outdoor temperature and lamp type/shape. If you’re wondering what AC unit you’ll need for a home that’s 2,400 square feet, or for any specific square footage, you’ll find that the most commonly used calculation is actually relatively straightforward. That said, keep in mind that the square footage of a particular building is far from the only factor influencing the size of AC ... Air conditioners are sized by the number of BTUs they put out. BTUs stand for British Thermal Units and refer to the amount of energy your air conditioner is using per hour. To figure out what size air conditioner you require, you first need to determine the amount of BTUs you require. This is done by calculating your square footage. Square feet method, Using “Manual J”, and. Incorporating “Manual J”, psychrometric chart, comfort chart, and duct sizing charts into selecting the best air conditioner size for the application. All three methods have been used by air conditioner contractors throughout the world, in near-equal distribution. Let us look at these in detail. For many Southern California multi-family projects, around 400 sq. ft./ ton is kind of an average for moderate climate zones (there are 16 in CA). More wall exposures/ windows would drive that towards 300-350 sq. ft./ ton, and mild climate zones like Long Beach tended to be around 500 sq. ft./ ton. If you’re wondering what AC unit you’ll need for a home that’s 2,400 square feet, or for any specific square footage, you’ll find that the most commonly used calculation is actually relatively straightforward. That said, keep in mind that the square footage of a particular building is far from the only factor influencing the size of AC ... Jan 11, 2016 · High performance homes can be as high as 1500 or 2000 square feet per ton. That means that a contractor using 500 square feet per ton is installing an air conditioner that's 2, 3, or even 4 times larger than it should be .” For example, a model SSX160241 is a 2 Ton (24,000 BTU) air conditioner. There is only one correctly sized air conditioner or heat pump for your home. A unit that is oversized will turn on and off too frequently, called “short cycling.” Short cycling causes the unit to lose both efficiency and the ability to properly dehumidify the home. 2 days ago · When we talk about air conditioning, a “ton” is the measurement of a units ability to cool. If you have a one ton AC unit, it means it has the ability to cool 12,000 BTUs an hour. Residential central air conditioners come in a range of sizes from 1.5 ton to 5 ton models. Thus, a one-ton AC unit would be rated 12,000 Btus per hour. The total square feet in a home is the primary factor involved in calculating which AC is best. The following air conditioner tonnage chart shows how square footage may affect the necessary AC tonnage in an average Florida home: 1.5 tons: 600-900 sq.ft. 2 tons: 901-1200 sq.ft. May 13, 2014 · 4. 1 square meter = 10.76 square feet 5. 1 watt = 3.412 BTU per hour 6. 1 horsepower = 745.69 watts 7. 1 Btu/hr = 0.293 watts 8. 1 ton = 11956.14 BTU per hour 9. 1 horsepower = 2544.4342 BTU/hour 10. 450-550 square feet = 12000 BTU per hour 11. 700-1000 square feet = 18000 BTU per hour 12. 1400-1500 square feet = 24000 Btu per hour BTU Charts Furnace Output and Air Conditioner size for a Bungalow Bungalow Area [sq ft]* Furnace Output [BTU/hr] Air Conditioner size [ton] Built after year 1980 Built before year 1980 Built after year 1980 Built before year 1980 up to … BTU Calculator AC BTU Calculator. Use this calculator to estimate the cooling needs of a typical room or house, such as finding out the power of a window air conditioner needed for an apartment room or the central air conditioner for an entire house. BTU Charts Furnace Output and Air Conditioner size for a Bungalow Bungalow Area [sq ft]* Furnace Output [BTU/hr] Air Conditioner size [ton] Built after year 1980 Built before year 1980 Built after year 1980 Built before year 1980 up to …