Updates
My CL650 is more than a year old, ~14 months
Additonal info
Total pump wattage used in tank - 150W
300W of MH
1. Chiller seems to work much long. Increase in run time of abt 20%
2. Fan coil seems to sound louder, but still bearable
3. Like most bro reported here, chiller product loud "tug" sound when cut-off. Sometime have, sometime dont have.
4. Have not service the chiller or pump (Sicce Extrema) used to feed the chiller
Overall conclusion is Resun CL650 is an excellent buy.