The short answer is yes. Boilers have an automatic fill level with a built-in check valve. They are set to maintain a constant 15 pounds of pressure in your hot water boiler. No matter how long you leave the water on, this valve will keep the pressure at the recommended 15 pounds.
Usually, a hot water-based heating system is a closed system. This means the water is kept separate from potable or drinking water and can’t leak back into it. It also means you do NOT have to add additional water to your boiler. A good rule of thumb – just leave the water on and let it take care of itself.
So what happens if you DO turn the water off? Air rises faster and higher than water and you can end up with air in the radiators on higher floors. This stops the flow of hot water. You then have to use the bleeders on the boiler to bleed the air out which makes the pressure drop.
To keep the pressure constant in your boiler and to maintain the best function in your heating system, leave the water on.
Need Boiler Service?
Wilbur Henry is the expert to call to service your hot water radiators and boiler in York PA, call 717-755-5461.
