— Performed CMA Inspection on 1 Split AC System with Hot Water Coil. Cleaned and flushed drain pan & lines, tested electrical and temperatures, changed air filters. — Found thermostat not satisfied and calling for heat upon arrival. System uses hot water for heating. Observed return temperature of 63 at thermostat, with supply temperature of 70. Found insufficient temperature difference in heat mode. Location seems to have water heater turned off. Acceptable temperature difference in cooling mode, with a supply temperature of 50 and a return of 67. — Customer was not on site to confirm if water heater is off. Did not observe any hot water when running at bathroom sink (after turning hot water valve to sink on). Made attempt to contact customer to confirm if water heater was off. No answer from customer, and was unable to locate indoor breaker panel. Left message with customer.