Heat kit came on with call for heat. Without heat kit system was hitting a 30 degree delta T. Suction line temp was 146 with an outdoor ambient of 54. Nest thermostat appears to have an energy saving eco mode that is inaccessible from our end; possibly needs app holder to make necessary comfort adjustments. Schedule set to 70 during day time and 66 during night time. Schedule approved by homeowner/tenant.