Almost 10 years after they were installed and still working like brand new. I would also like to add that their customer service is AMAZING. They have answered questions for me on multiple occasions. They respond quickly and never make me feel like my question is unimportant. The minor adjustments that might be required are easy enough to do for myself so I don't have to call a plumber every time.

We have had our Echo-King furnaces and hot water tank in our duplex for 5 years now. We have saved so much money on our natural gas bill! There is a very noticeable improvement from our old and very inefficient furnaces. Our home is warmed quickly when we turn on our furnace. Maintenance is a dream. We have had no problems at all since they were installed. So far we are thrilled with our Echo-King products!

Highly recommend this Canadian company.