Skyjuice, I am now really confused with your replies. I am trying to tell you that the working performance between a peltier based chiller and a refrigerant based chiller are far from similar. I'd even gave an analogy of comparing them like a bicycle and a car. But you came out with technical terms that you alone think is worthwhile. It may be true in your line of work but it has no bearing in our discussion.
I know you've said peltier chiller are not energy efficient. What you do not know that technically, they are inefficient for aquarium use. This is what me and my buddy, Tawauboy, is trying to inform you. I do agree with Tawauboy efficiency rating of 5-8% as I have tried peltier chiller, sadly when I was not wise of it.
I really hope you are enlightened with my explanation. As a moderator in the equipment section, we do encounter this topic every year and do our best to inform the members but with new members who are misinformed, it has been an uphill task. Some comes into the discussion with good intention while other just wouldn't agree. Yeah, it's time to move on now.