Long service life - The impressed current anode and Ceraprotect enamel coating protects against corrosion;Designed for heat pumps - Ideal for Heat Pumps & Boilers - Modular indirect DHW tanks suitable with Vitocal 100-AW heat pumps and boilers;Minimal heat losses - Highly effective HCFC-free foam insulation reduces standby losses;Low lead content - Conforms with CSA Low Lead Content Certification Program, including US Safe Drinking Water Act, NSF/ANSI 372;Easier transport - With integrated carrying handles at the top and bottom of each Vitocell 100-V tank;Hot water comfort - Supply DHW all day long with large heat exchanger surfaces