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.
Instead of total gallon capacity, they are rated in gallons per minute, and their ability to heat the water at a given gallon per minute rate, called temperature rise. Correctly sizing a tankless water heater for your needs can be done in three simple steps.1.nstead of total gallon capacity, they are rated in gallons per minute, and their ability to heat the water at a given gallon per minute rate, called temperature rise. Correctly sizing a tankless water heater for your needs can be done in three simple steps. 1.