Lennox 8 SEER 2.5 Ton AC
3.5 ton
looks like a 5 ton unit
That is a 3 ton
Lennox's older systems have their own code found between hyphens in the model number. 211=1.5 ton 261=2 ton 311=2.5 ton 411=3 ton 461=3.5 ton 511=4 ton 651=4.5 ton So, in the case of your example, you have yourself a 3.5 ton, or 42000 pounds.
2.5 TON TO 3.5 TON
It should be a 4 ton.
4 ton
5 ton
its a 4 ton
3.5 ton NO! its a 3-TON!!!
4