Hi:,,,, Goodman has a web. site and they are a very good company. I like them a lot and have said for years they give you a lot of bang for the buck. verify this through them, but the 27 is most likely designating a high efficiency 2 ton system. Hope this helps: Jimimwane
1.5TON.
3.5
3.5 tons
3 ton
2.5 Tons
hvac unit
4 ton
2.5
5 ton
3 TON
2.5 ton
2 ton