Haakon ran a systems check on our furnace 12-15-23. He was very professional and very kind. Before he came someone from DeZiel called to let me know he was on his way. What great customer service. I’m very glad we went with DeZiel when our furnace went out. They have been more than helpful, alway professional and they call me when its time to service my furnace. It’s a no brainer go with DeZiel!