You can determine the tonne size of your Lennox HVAC system by examining the model number on the data label on the side of the A/C condenser (outdoor unit). Look for the second set of digits in the model number. It is a number divisible by 6 or 12 representing the system’s nominal BTU in thousands.
The sequence of letters and numbers in the Lennox model number represents specific information about the device. The following figures analyze two typical model numbers. HS26 is the series, 060 is the capacity, 1P (1) is the line count and (P) is the performance characteristics.
Lennox packaging units are offered in tonnages from 2 to 5 tons. A lower tonnage air conditioning or refrigeration system is typically made up of smaller capacity units used in smaller homes, or coupled with another refrigeration unit to cool different parts of the same home.
Find the model number. Within this sequence of letters and numbers you should find an even two-digit number. Housing unit options range from 18 to 60. Divide by 12 (which equals 12,000 Btu/hr or one tonne of cooling capacity) to get your air conditioner’s tonnage.
Look at the model number (located on the data plate on the actual side of the compressor) on the compressor and it should be a number that can be divided by 12. It should start at 18 and go no higher than 60 for residential AC units. 18 equals 1.5 tons and 60 equals 5 tons of cooling.
The numbers you see on residential air conditioners and heat pumps are: The 3 digits in the model number indicate the rating in thousands of BTU/hr. Since 12,000 BTU/hr equals 1 ton of air conditioning capacity, it’s easy to find out how many tons of rated capacity your air conditioner is.
41 = 3 tons in the older Lennox nomenclature. 46 is 3.5 tons, 51 is 4 tons and so on.
The size of your Lennox air conditioner can be determined by the model number of the unit. The model number (M/N) can be found on the outside of the plate along with the serial number. Example: A unit with a model number of 10ACB42-1P lists the capacity of the unit that it provides to the living space.
13ACX Air Conditioning – 3.5 TON.
13ACX Air Conditioning – 3.5 TON.
Lennox, Air Conditioning, Merit, 5 Ton, 14 SEER, 1 Stage, 208/230V, 1 Phase, 60Hz, ML14XC1-060-2.
Contrary to popular belief, a ton does not represent the weight of the AC. Rather, tonnage is the unit used to measure the cooling capacity of the air conditioner based on the size and other characteristics of your space.
If your home is 2000 square feet, you can calculate your HVAC needs the same way you would for a 1600 square foot home. Assuming a ton of cooling capacity can cool 400 square feet of your home, you need about 5.0 tons of air conditioning capacity. Multiply that by 12,000 BTUs and you get 60,000 BTUs.
How many square feet a 3 ton air conditioner will cover is also fairly easy to answer. 3 tons equals 36,000 BTU. Using the rule of thumb of 20 BTUs per square foot, you can see that a 3-ton air conditioner will cool about 1,800 square feet of space.
4 Tonnen 16 SEER Goodman Air Conditioner Split System.
Sometimes abbreviated as model or model number, a model number is a unique number given to each product manufactured by computer hardware manufacturers. Model numbers allow manufacturers to track each hardware device and identify or replace the correct part when needed.
AC Model Numbers
There is no universal model number decoder as AC manufacturers use different codes, but the model number can give you the capacity, tonnage, single/variable speed, voltage, refrigerant type and Brand name of your air conditioner.
The number 311 means 31K in Lennox language. So it’s 2.5 tons.