##### Asked by: Vasiliki Barthelmy

asked in category: General Last Updated: 20th January, 2020# How do you tell what Ton my Carrier AC unit is?

**units**range from 18 to 60. Divide the number by 12 (which represents 12,000 Btu/hr, or one

**ton**of cooling capacity) to get

**your AC unit's tonnage**.

In this way, how can I tell what year my carrier unit is?

More recently **Carrier** has simplified things using the first four digits of the serial number to signify the age, where the first two digits indicate the week and the third and fourth digits indicate the **year** of manufacture (similar to Bryant).

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

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

Blue | Green | |

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

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

4 tons | 2301-2700 sf | 2251-2700 sf |

In this manner, how do you determine the tonnage of a Goodman air conditioner?

To calculate **tonnage**, divide the BTUs by 12,000, which is the weight of one refrigeration ton. For example, a **unit** with 18,000 BTUs has a **tonnage** of 1.5. The **Goodman** Manufacturing Company website provides product specifications, including model numbers, for all current air conditioning **units** and some older models.

What size central air conditioner do I need for a 2000 sq ft home?

STEP 1: Determine how many BTUs of heating and tons of AC you need

House Square Footage | BTUs Needed |
---|---|

1,000 – 1,200 | 21,000 |

1,200 – 1,400 | 23,000 |

1,400 – 1,500 | 24,000 |

1,500 – 2,000 | 30,000 |