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.
1 Turn off water and fuel supply (gas or electricity) to water heater. 2 Partially drain the water heater. 3 Locate the anode rod on the water heater; if necessary, unscrew and lift off the cover from the top of the heater. 4 Use a ratchet wrench and 1 1/16-inch deep socket to unscrew the anode rod from the heater.