Living by the coast? running on well water? If you ever had rust, corrosion or water hardness issues, the new SWH from Solav is the answer to your problem. Made out of 100% polymer based material, the 24-Gal unit is virtually rust, corrosion and limescale resistant. It will provide you with 4 hot showers, and be there the next day to heat up again. Simple & inexpensive, combined with a DIY fast installation and rugged materials make this the perfect unit for a cabin or small house hold. An optional electric backup will make sure you will always have hot water.