0 John Atlanta, GA on Mar 31, 2011 Like Clip I'm interested in tankless water heaters. Do they really save energy $$ and homw much do they usually cost including installation? 1 Comment J. Sterling Construction Raritan, NJ i believe they save energy and money because they are not constantly running to heat the water as for the installation you would have to check with contractor in your area NOTE: You can drag and drop your photos to reorder them Required Comment Saving...