I lost heat in one of my zones. GEM sent a technician out and he purged the lines of all air. Cost me 900$. A week later I had to have them come back out because another zone stopped working. The next

Beyond disappointed with GEM. They installed two commercial-grade water heaters with incorrect connecting pipes that began to corrode, creating a high risk of bursting. Despite the manufacturer recogn

The bypass duct was so close that you hit it to change the filter In the humidifier I was told that they would cut it each time to change the filter . Two days later I had water on my window sills. I