That is a 3 ton air handler with 10 kw heat strips.
N2A318GKA100 The 18 in the model number represents 18,000 BTU's or 1.5 tons.
Do a GOOGLE search of the model #. I found it is a 9 SEER package unit, circa 2000. Goodman also made it under the Janitrol and Kenmore names.
The tonnage for a Heil air conditioner model # ACS030a2c1 is 2.5 tons. The 30 in the model number indicates that the air conditioner is 30K BTU's which makes it 2.5 tons.
What is the day and night air conditioner model number 561aj036-a tonnage?
it depends on the size of the system, this info is usually on the name tag, where you'll also find model and serial numbers.
Serial # tells you the year of manufacture not the model #.
Goodman
1999
Yes
Four
Luxaire
What is tons on a tempstar air conditioner modal number mbps224akc2