DCM14: completed 4/14. Need to return to replace filters and complete maintenance on remaining systems. Filter size- 18x21x1. Systems 5, 12, 13, and 14 are heating at this time tested refrigerant pressures in cool due to outdoor ambient being 70*, refrigerant pressures and temperatures are appropriate for indoor and outdoor weather conditions. Thermostats were set to 1 heat stage not allowing the heat strips to energize programmed thermostat for aux heat. Will need to test heat strips when return. Set thermostats to 64* heat. Left early due to business closing for holiday.