The unit provides both heat and AC and is remarkably quiet. The compressor is virtually silent and all you hear outside is the whoosh of the fan. The indoor unit is is as quiet or quieter than my LG F max 12,000 btu unit. It comes with the line set and drainage tube which saves another $75.00. The line set was well flared and sealed the first time I connected the system. The install is standard for a split and you will still need a vacuum pump.