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.
Shut off all water supply lines to the existing water heater. (If this is a new installation, make sure the water is completely shut off.)4. Remove the water heater to expose pipes. Locate and mark the spot where you plan to install the tankless water heater.5.. the tankless water heater Install as close as possible to the hot water draw-off point, for example, directly beneath the sink or next to the shower stall.2. Install the tankless water heater in a frost free area. If frost may occur, remove the unit before freezing temperatures set in.3.