A ton is the cooling capacity of an air conditioning system. One ton is equal to the amount of heat required (288,000 Btu) to melt one ton of ice in a 24-hour period. A one-ton air conditioner is rated at 12,000 Btu per hour (288,000/24). A two-ton unit would be rated at 24,000 Btu per hour.

The use of **tons** to measure cooling capacity comes from this time. A **ton** refers to the amount of heat it takes to completely melt a **ton** of ice. Melting this amount of ice requires 286,000 Btu (British thermal units). Rounding up 11,917 Btu/hr gives you 12,000 Btu/hr, which is one **ton** of **air conditioner** capacity.

Likewise, how many square feet will a 3 ton AC cool? METHOD 2: Go by square feet + climate

HVAC System Sizing | ||
---|---|---|

Blue | Green | |

2.5 tons | 1401-1650 sf | 1351-1600 sf |

3 tons | 1651-2100 sf | 1601-2000 sf |

3.5 tons | 2101-2300 sf | 2001-2250 sf |

Also to know is, how many tons of AC do I need per square foot?

Understand here that the standard practice among **HVAC** contractors sizing air conditioners for new homes is to use a rule of thumb. It’s often in the neighborhood of 1 **ton of air conditioning** capacity for each 600 **square feet** of conditioned floor area, usually abbreviated 600 sf/**ton**.

What is the difference between a 2 ton and 3 ton air conditioner?

**Differences in Air Conditioner** Size A two-and-a-half **ton air conditioner** has 30,000 BTU’s and can cool a home sized 1,201 to 1,500 square feet while a **three ton** unit has 36,000 BTU’s and is designed for homes 1,501 to 1,800 square feet.

### How do I know how many tons my air conditioner is?

Divide the number by 12 (which represents 12,000 Btu/hr, or one ton of cooling capacity) to get your AC unit’s tonnage. If you don’t want to do the math, here are the numbers you’re looking for and their corresponding tonnage: 18 = 1.5 tons. 24 = 2 tons.

### How AC tonnage is calculated?

Area Method : To calculate, multiply the length and breadth of the room (in feet), take square-root of the answer and divide by 10. The resulting number will give the desired tonnage. Volume Method : Alternatively, multiply the length, breadth and height of a room (in feet). This is the tonnage required.

### Is 1 ton AC enough for what room size?

For a room-sized around 100-120 sq ft, 1 Ton capacity AC should be sufficient enough. In case of bigger rooms, buy 1.5 Ton or a 2 Ton AC.

### What is 3 star and 5 star in AC?

A 3-star AC is one that has an Energy Efficiency Ratio (EER) of 2.9 to 3.09, while a 5-star AC has an EER of 3.3 and above.

### How many BTU’s are in a ton?

A refrigeration ton is approximately equivalent to 12,000 BTU/h or 3.5 kW. Air-conditioning and refrigeration equipment capacity in the U.S. is often specified in “tons” (of refrigeration). Many manufacturers also specify capacity in BTU/h, especially when specifying the performance of smaller equipment.

### How much is a 5 ton unit?

Average AC Unit Prices by Size or Capacity Central AC Unit Size AC & Coil AC & Coil Installed Cost 3 Tons, 36,000 btu $1,650 $2,990 3.5 Tons, 42,000 btu $1,780 $3,250 4 Tons, 48,000 btu $1,860 $3,350 5 Tons, 60,000 btu $1,920 $3,590

### What is AC cooling capacity?

‘Cooling capacity’ is the measure of an air conditioning system’s ability to remove heat from a room, thus making the room ‘cooler’. The reverse of this gives you ‘heating capacity’ (i.e. an air conditioner’s ability to remove heat from outside and transferring this into the room).

### What does ahri do?

AHRI: Supporting Nationwide and Global Industry The Air-Conditioning, Heating, and Refrigeration Institute (AHRI) is the trade association representing manufacturers of HVACR and water heating equipment within the global industry.

### How many tons is 1500 square feet?

Air Conditioning Square Footage Range by Climate Zone ZONE 1 ZONE 4 1.5 Tons 600 – 900 sf 700 – 1050 sf 2 Tons 901-1200 sf 1051 – 1350 sf 2.5 Tons 1201 – 1500 sf 1351 – 1600 sf 3 Tons 1501 – 1800 sf 1601 – 2000 sf

### How many square feet can a 1 ton air conditioner cool?

A well-insulated room with 100 square feet will require a 4,000 to 6,000 (a half ton) BTU air conditioner while a 12,000 BTU (one ton) unit can cool up to 500 square feet.

### What size air conditioner do I need for a 300 square foot room?

2. Find the correct cooling capacity for your room size Area To Be Cooled (square feet) Capacity Needed (BTUs per hour) 300 up to 350 8,000 350 up to 400 9,000 400 up to 450 10,000 450 up to 550 12,000

### What size AC do I need for 1000 square feet?

What Size Air Conditioner Do You Really Need? Area To Be Cooled (sq. feet) → Capacity Needed (BTUs per hour) 700 up to 1,000 18,000 1,000 up to 1,200 21,000 1,200 up to 1,400 23,000 1,400 up to 1,500 24,000

### How many BTU do I need per square foot?

To determine the number of BTUs per square foot that you need to heat a room, simply multiply the square footage by 20 BTUs per square foot. For example, if a room has 1,000 square feet, you would require 20,000 BTUs to heat it.

### How many sq ft will a 2.5 ton AC cool?

According to this common but somewhat inaccurate method, you need 1 ton of air cooling capacity for every so many square feet of living space. While there’s some dispute over the exact amount, an often-used amount is 600 square feet. A 2.5-ton unit, then, theoretically would fit a 1,500-square-foot home.