Tankless Water Heater features can make a big difference depending on the installation demands.
Outdoor Vs. Indoor Installation - choose where your unit will be installed.
Hardwired - units are intended for permanent installations where as Plug In units are typically installed under a sink for instant hot water or in for a temporary shower head water heater unit.
Energy Star - rated units have higher effeiciency standards and will operate on less energy.
Electronic Ignition - (No Pilot Light) When water is in high demand such as a business, using a gas tankless water heater is more cost effective but for residential point of use location, using an electric model with an electronic igintion is a great choice.
Plug In -This product will need to be plugged into an outlet. Perfect for smaller homes, cabins or vacation homes.