Common Issue
Boiler Losing Pressure
Diagnosis and professional repair for pressure loss
What Causes Pressure Loss?
Small Water Leaks
High PriorityInspect pipes and connections for drips
Failed Pressure Relief Valve
High PriorityReplace valve - professional only
Expansion Vessel Issues
Medium PriorityMay need re-pressurization or replacement
Heating System Leaks
High PriorityCheck radiators and heating pipes
Slow Membrane Deterioration
Medium PriorityExpansion vessel maintenance
Warning Signs
Pressure gauge drops 0.2-0.5 bar daily
Pressure drops rapidly (over hours)
Water stains under boiler or pipes
Radiators not heating evenly
Boiler lockout without error code
Hissing sounds from boiler area
What You Can Do
Short-Term
- • Monitor pressure gauge daily
- • Note how quickly pressure drops
- • Check for visible water leaks
- • Re-pressurize if trained to do so (check manual)
Professional Repair
- • Full system pressure test
- • Identify exact leak location
- • Replace faulty components
- • System re-pressurization and balance
Don't Ignore Pressure Loss
Continuing to operate with low pressure can damage your boiler