Conflicting HVAC replacment info
I live in Florida and need to replace my a/c system. I have an 1790 sq ft townhouse. I asked for quotes on a 16 SEER system. I received estimates from 2 companies for Trane and Ruud systems.
Company #1 came and measured everything (window etc) for a heat load calculation and told me I need a 3 ton unit (Ruud 14AJM36 and RHLL-HM3617)
Company #2 used a heat load calculation from Rheem with infomation from the property appraisor, they did not measure anything. They told me I need a 3 1/2 ton (Ruud 14AJM42 and RHLL-HM3821). In addition I asked them for an estimate on a 3 ton to compare "apples with apples" (Ruud 14AJM36 and RHLL-HM 3821)
I don't know who to believe regarding the size required and it also seems strange that the air handlers between the two companies using the same Ruud compressor would have different model numbers. I wonder if one of the companies is using older equipment. The first company also told me Trane is much better than Ruud and the second company told me he wouldn't use Trane in Florida because of mold problems.
It is a big purchase and I want to make the right decision, especially because we have hot /humid days 9-10 months out of the year.