Overheating and bad ignition coils

My Jeep Liberty 05 has had overheating
problems lately, but the problems always
seem to be solved. Therefore the water
pump, ac compressor and motor fan are all
recently new . Now its overheating again, I
have to keep using water instead of
antifreeze because it eats it up. So now I
have no idea what it could be if everything is
basically new. To add to that, now I have bad
ignition coils that I have to replace, since that
became a problem, my car over heats like
crazy now. Also smells like burnt too.