I found this tankless water heater to be top quality and comparable to other nationally known brands. The construction is as good if not better then other brand name applineces. The instructions were easy to follow and covered all necassary topics. Installation was streight forward and not complicated. The temperture control is a remote control panel you can located where it is easy to access such as the area the hot water is to be used while the heater it self is located outside the building. The features and convinience of this tankless water heater make it a very good purchase.