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
3.5
1.5TON.
4 ton
3 ton
2.5 Tons
2.5
hvac unit
3.5 tons
5 tons
2 ton
1.5 tons.
5 ton