Size system

Central air conditioning systems have a size in terms of "tons". One ton = 12,000 BTU (British Thermal Units). So if you need a three-ton system, you need 36,000 BTU. To get the right size for your home, you have your home airspace to be measured. Airspace or airflow is determined by the room's length multiplied by width times height.

Accurately measure each room, including storage, hallways, bathrooms, kitchens, bedrooms, etc. When you calculate the volume of individual areas (LxWxH), you must each area by a factor multiplied by 3 if there is any refrigerated section at the top of a loft, or by a factor of 2.7 in a cool area in front, as in the second floor of a colonial home.

For example, suppose you have a ranch-style house with a full, unfinished attic. One of the bedrooms has an area of 9 x 12 x 8, so by multiplying the sum of the 864th Now multiply by a factor of 3 (no refrigerated section at the top). The total number of BTU of this space is needed in 2592. Follow this formula for each area in your home, so a total of all areas and you will be required by the total BTU cooling load or play in your home.

(If you set a sloping ceilings in some rooms, the average ceiling height: 8 m on one side slopes up to 12 mm on the other side, so would the average ceiling height of 10).

Let us assume that you have added all your room areas and a total of 38,492. Since central air system are lots of good, with a half ton step you have the size of a 3.5-ton system. A three-ton system (3x12, 000BTU only) 36,000. Since your house is over three tonnes, you need the next size, 3.5 tons.

The size that you need to install in your home can be measured accurately. When you install a 2-ton system, in a 3-ton-sized house, home is not properly chilled, and you will be more energy because of smaller systems used to work harder. If you choose a larger system than necessary, for example, a 4-ton system (48.000 BTU) in a 3-ton large house, the system can not function properly and the air handler (internal coil) rushes to the limited air circulation. A fake medium, the system may also invalidate your warranty.

The formula used by many central air-pro, but not extraordinary circumstances such as skylights, rooms with plenty of window space or other existing conditions. More BTUs would be required.