A couple years ago, I lived in a condo located on the third floor of the building. I loved living in that space because it overlooked a lake and I was able to watch the ducks and wildlife from my living room window. Also, I had a front row seat to the sunsets in the evening – that condo was a perfect little haven. Though it was a beautiful fully renovated condo, the building was quite old. It was built in 1995. I had upgraded kitchen appliances, but I think that the water heater in the condo was from 1995 when it was built. Eventually, it began giving issues and it was because it had reached its lifespan. According to the Department of Energy, a tankless water heater can last for more than 20 years. And many of these water heaters can be repaired. When I called a plumber to have him inspect the water heater, he asked me when was the last time I flushed it to remove mineral deposits. I don’t know about you, but I didn’t know that I needed to flush my water heater, so when I mentioned that to the plumber, he was quite surprised. I get my HVAC unit serviced on a regular basis, but I have never had my water heater serviced or inspected for leaks or any problems. But since this water heater was over 20 years old, the plumber mentioned that it is probably time to think about getting it replaced. He found that the water heater had a leak and he replaced a small part and was able to get back up and running. But shortly thereafter, I purchased a new one.