Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bought 2 both lasted 3 years

Bought two of these for a 4900 sq ft house. Split the house, one for master bath and other bed rooms, other for kitchen and utility area. They worked well but only lasted about 3 years. Forget trying to get service from the factory, it is a joke. Located in Miami, if someone does answer the phone, you better speak Spanish. Building a new home now but i think I will go with a more reputable brand at a higher cost.