Rico in Spanish means rich in English just if your talking about money. If your talking about food rico means it's delicious, good, etc. Example, esto huele rico mean this smell good or  que Rica la comida means like delicious food in English. Puerto Rico means Rich Port in Spanish.
Tankless or demand-type water heaters heat water directly without the use of a storage tank. Heat pump water heaters move heat from one place to another instead of generating heat directly for providing hot water. Solar water heaters use the sun's heat to provide hot water.
Tankless water heaters only heat water when you need it, so minimal energy is wasted. The beauty of a tankless hot water heater is its ability to provide a continuous supply of hot water. Compared to a traditional hot water heater, a tankless option is more efficient in its delivery, and is a big energy saver. A tankless hot water heater is a heating element (either gas or electric) that connects directly to the homeâs water pipes.