I have brought this sunsenses water coil for regular useage , at first I was happy with it performance it would on average take about 20 to 30min to completely heat one Bucket of water as time passes its performance went down I have seen it taking more then 1hr to heat a bucket of water , it finally broke down after two months of regular usage , it completely stopped heating , I would give it 1 start for its quality and support because I called them to claim my warranty but no proper response from them they asked me to get it repaired from near store but couldn't asure me of a replacement it looks average and of average cost but I think better to buy a better quality product then pooling money in to this