The Rheem 3-ton package unit is a popular choice for homeowners seeking reliable heating and cooling. However, like any HVAC system, it may occasionally experience issues. Whether you own a Rheem 3 ton AC unit, a 3 ton Rheem package unit, a Rheem 3 ton gas package unit, or a Rheem 3 ton heat pump package unit, this guide will help you identify common problems and troubleshoot them.