Tankless Water heaters

[Cadaverous Pallor]

Originally Posted by tracilicious

Uh oh. Should I be doing this?

If I understand correctly: Hard water builds up mineral deposits in your water heater. Meaning, rocks. The rocks can break off inside and bang around when the water pours in. Ours was doing just that recently but the apt. guys replaced the heater for us. Too bad they're too cheap to get us a cool (hot?) tankless one.

Apartment repair guy is a tankless job.

Anyway, I'm not sure how much the build-up can affect the efficiency of the heater.