While designed for Williams units

it is optimized for heating applications

Tuned to a

Simplified Installation: The clip-on mounting system enables one-handed attachment to the armature

it features extended copper connections

Trane KIT18829 Kit 321894-709 While designed for Williams unitsThe Trane KIT18829 is a specialized reciprocating to scroll compressor conversion kit engineered to modernize residential and light commercial split systems. In the field, technicians encounter aging reciprocating units that suffer from higher vibration and lower volumetric efficiency; this scroll compressor changeout kit provides a direct path to upgrading those systems to modern orbital compression technology. This kit is a genuine Trane OEM