Low Boiler Water Pressure
Professional diagnosis and repair to restore heating performance
Pressure Range & Problems
Normal: 1.5-2 Bar
Optimal pressure for boiler operation
Warning: 1.0-1.5 Bar
Below optimal, may trigger lockout
Critical: Below 1.0 Bar
Boiler will likely shut down
Common Causes
Water leaks in pipes or connections
Expansion vessel failure or incorrect charge
Failed pressure relief valve opening
Lack of system maintenance
Slow leak in heating loops
DIY Pressure Check
1Locate the pressure gauge on your boiler (usually on front panel)
2Note the current reading in bar or psi
3If below 1.0 bar, your boiler may not heat properly
4Never attempt to re-pressurize yourself - call a technician