Nagas is one of the best brands when it comes to geysers, with winter approaching if you are looking for an instant geyser that keeps your budget in check look no further than nagas dg-7l. It has rust-free and maximum protection is ensured with features like auto cut-off and anti-freezing protection. It also gives you the option to control pressure at different levels. Above all, it is energy efficient and saves up to 40% energy.