I just bought a Lennox XC13-036-230 central air with R410A coolant, the contractor installed a C33-31B coil. I can't find this combination in the Lennox XC13 engineering Data published Feb. 2008. The contractor pointed me to ARI site and certificate #574650. The certificate rates the above combination @ 13 SEER but doesn't mention the coolant. My questions are:
1- Is the above ARI certificate for R410A? or only R22?
2- Is the above a good combination for a house 2700 sq ft?
3- Does the above combination provide 13SEER rating?
Your help is greatly appreciated!!