If you’ve glanced at your boiler and noticed the pressure gauge looking “off,” you’re not alone. Many homeowners aren’t sure what normal pressure even looks like.

Most residential boilers operate best between 15 - 20 lbs (when cold). If the pressure drops too low—or climbs too high—your system can struggle to heat properly.

Here’s what that could mean:

Low Pressure

• Radiators not heating evenly

• System shutting off unexpectedly

• Possible small leaks in the system
  

High Pressure

• Relief valve dripping water

• Strain on internal components

• Risk of long-term damage
  

Pressure changes don’t always mean major repairs are needed—but they shouldn’t be ignored.

Your heating system should operate quietly and consistently in the background of your life. If you’re noticing pressure fluctuations, it’s worth having it checked to prevent bigger issues down the line.

Clear answers today can prevent costly repairs tomorrow.