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No. Hot water radiators operate within a “closed” system where there’s little or no corrosion taking place. Flushing these radiators will only cause you to add more water...
Each hot water radiator should have an air vent at the top, on the side opposite the inlet pipe. You’ll use this vent to “bleed” air from the radiator when you’re first s...
If it’s a one-pipe steam radiator, the vent belongs on the side of the radiator that’s opposite the pipe. Because the lighter-than-air steam will head first for the top o...
No, but it has to have something to keep the steam from entering the condensate return lines. That “something” may be an internal orifice, a tiny check valve you can’t se...
Dan Holohan talks with Bryan Orr of HVAC School about how he got his start in the industry, pumping away, classic hydronics, and more in this entertaining podcast. Click ...
It’s the way the radiator sections go together. They may be nippled together at both the top and bottom, or just at the bottom. Older steam radiators have nipples across ...
Q: If I decide to move a cast-iron radiator, where should I reinstall it? A: Ideally, a cast-iron radiator should be under the window (that’s where the greatest heat loss...
First, take care with those old pipes. Make sure you’re using two wrenches when you’re loosening the union connections. Assume the position, and then turn one wrench whil...
Maybe. It all depends on how the long-gone manufacturer assembled the radiator. A cast-iron radiator goes together in sections, like a loaf of sliced bread.
If you were to ask someone with knowledge of the hydronics industry, “What’s the first thing that comes to mind when you hear the words ‘PEX tubing and hydronics’?” chanc...
