Hello, old friend. I’m writing today to say thanks, and to say farewell. This will be my last column.

I’m still seeing plenty of steam systems out there in our older cities, so knowing about dry steam will help you if you’re replacing a steam boiler. Dry steam is your goal.

Morris had me on the phone. It was 1974 and he was calling from Brooklyn, New York. I had a waxed handlebar mustache that year, and my workmates at the manufacturers’ rep were calling me Rollie Fingers because he was pitching for the Oakland Athletics in the World Series. Looking at those 1974 photos, I realize that the ‘stache was not one of my best ideas, but the 1970s were their own time and no one can change that.

I called the plumber because there’s an immediacy to plumbing; and I’m old enough to know that it’s best for me not to touch pipes. To each his own trade.

Most hydronic systems have the boiler running up to 180° F with water returning from the system at 160°. This rarely happens in real life, but it’s the traditional way we do things.

There’s long been talk about how to divvy up the heating expenses in buildings that have tenants. Should each tenant have their own meter? Their own boiler? Boilers are a lot smaller than they used to be, right?

I was listening to James Trane the other day. He was speaking from Chicago in 1902, telling me that his system of steam heating using small pots of mercury was the best way to go.

I was, I’m sure, not even in the minds of my someday-to-be parents, but I’ve spent a lot of time in that decade of the Great Depression nonetheless. I like to think of them as teenagers as they wondered what was to be. They truly were the Greatest Generation.

 recently came across the December 1924 issue of Popular Science magazine. Reading stuff like that always makes me feel like I have a time machine.

I read somewhere that the most prevalent machine in the world is the electric motor. I thought about that for a while and it made sense. Just look around. But then I began to wonder what the second-most prevalent machine in the world is. Turns out it’s the pump!