1. Carrier Furnace Serial Number Date Code
2. Carrier Serial Number Date

Determining Air Conditioning Age & Capacity As a rule-of-thumb, capacity information is encoded by air conditioning manufactures in the model number and date of manufacture info in the serial number. There are 12,000 Btus per ton of cooling, and air conditioners are sized by every ½ ton.

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Carrier Furnace Serial Number Date Code

We have a Carrier 58mya080 furnace serial #0398a003a get codes 12 and 13. At call for heat, pre blower comes on for 90 seconds, no gas, no ignition, especially on damp days after heat not used for day read more.

Manufacturers often encode the approximate rating in Btus somewhere in the model number. Therefore it is often simple to scan the model number for a two-digit number that is divisible by 6 and to divide it by 12 to determine the capacity rating in tons. This number can be elusive, as it is not always exactly divisible by 6. Some manufacturer's systems make this easier than others. To complicate matters, some manufacturers have changed their systems of encoding data over time.

Carrier Serial Number Date

Amana Age: Use B-L-A-C-K H-O-R-S-E code B = 71 or 81 L = 72 or 82 A = 73 or 83 C = 74 or 84 K = 75 or 85 H = 76 or 86 O = 77 or 87 R = 78 or 88 S = 69, 79 or 89 E = 70, 80 or 90 ________________________________________________________________________ Bryant Capacity: Look for those elusive two digits in the model number usually (but not always) divisible by 6 and divide by 12 to convert to tons. Example: 56BAB0042000A0 42 = size on thousands of BTU 42,000 Btu = 3½ ton From 1964 through 1979 Bryant encoded age information in the serial number with the first two digits indicating week of manufacture and the letter following those first two numbers indicating the year beginning R = 1964: R = 1964 S = 1965 T = 1966 U = 1967 V = 1968 W = 1969 X = 1970 Y = 1971 A = 1972 B = 1973 C = 1974 D = 1975 E = 1976 F = 1977 G = 1978 H = 1979 In subsequent years Bryant simplified its system where, the first two digits of serial number = Week of manufacture. Third & fourth digits = Year of manufacture. Example: 3188XXXXXX = 31st week of 1988. Carrier Carrier has used several different codes at different plants. Information below refers to commonly used codes. Capacity: Commonly found in the last three to five digits of model number, sometimes in 100s of Btus - sometimes in tons Example: 001 = 1.5 ton, 002 = 2 ton, 003 = 2.5 ton, 004 = 3 ton, 004-5 = 3.5 ton, 005 = 4 ton, 006 = 5 ton Or 18xx = 1.5 ton, 24xx = 2 ton, 30xx = 2.5 ton, 36xx = 3 ton, 42xx = 3.5 ton, 48xx = 4 ton, 60xx = 5 ton Or 14xx = 1 ton, 18xx = 1.5 ton, 024 = 2 ton, 030 = 2.5 ton, 036 = 3 ton, 042 = 3.5 ton, 048 = 4 ton, 060 = 5 ton Age: Through the 1960s Carrier used the first digit of the serial number to indicate the year of manufacture.