Air Conditioning Plant Inspections
PSSR examinations for chiller units, air handling units, cooling towers and refrigeration plant pressure systems.
LDN Inspection Services provides statutory PSSR examinations for air conditioning, refrigeration and HVAC pressure systems. Our qualified pressure systems engineers examine chillers, heat pumps, AHUs, cooling towers and all associated pressure components, delivering clear digital reports with photographic evidence.
Air Conditioning PSSR Examinations
Air conditioning and refrigeration systems contain pressure components that are subject to the Pressure Systems Safety Regulations 2000 (PSSR). Refrigerant circuits operating above atmospheric pressure, refrigerant receivers, expansion vessels and associated pressurised pipework all fall within the scope of PSSR and must be included in a written scheme of examination.
Modern refrigerants operate at high pressures, and the stored energy within chillers, heat pumps and VRF systems is substantial. A failure of a pressure-containing component can result in rapid release of refrigerant, creating both safety hazards to personnel and environmental damage. Regular examination ensures safety devices function correctly and pressure components remain in safe condition.
Our PSSR examinations cover all pressure-containing components within air conditioning installations including refrigerant circuits, receivers, expansion vessels, safety valves, pressure relief devices, and associated pipework. We provide clear reports that identify defects and recommend corrective actions.
Key Requirements
- Written scheme of examination covering all pressure components
- Regular examination of refrigerant receivers and pressure vessels
- Safety valve and pressure relief device testing
- Safe operating limits defined and displayed on the system
- Defects must be reported and acted upon promptly
Equipment We Inspect
Our pressure systems engineers examine all types of air conditioning and refrigeration pressure equipment, including:
What We Check
Pressure Vessels & Pipework
- Refrigerant receiver condition and corrosion assessment
- Expansion vessel diaphragm and pre-charge pressure
- Condenser and evaporator coil condition
- Refrigerant pipework, joints and insulation
- Chiller and heat pump pressure vessel integrity
Safety Devices & Controls
- Pressure relief valve operation and set pressure
- High-pressure and low-pressure cut-out switches
- Pressure gauges and transducer accuracy
- Safety interlocks and emergency shut-down systems
- Operating parameters against safe operating limits
Our Inspection Process
A systematic approach to air conditioning plant examination ensuring safety and PSSR compliance
Pre-inspection review of written scheme, refrigerant records and maintenance history
External examination of pressure vessels, pipework and structural condition
Assessment of safety devices including pressure relief valves and high-pressure cut-outs
Examination of refrigerant receivers, expansion vessels and heat exchangers
Review of pressure gauges, controls and operating parameters against safe limits
Digital report with photographs, defect grading, system data and recommendations
Sectors We Work With
We provide air conditioning plant PSSR examinations for organisations across commercial, healthcare and industrial sectors
Why Choose LDN Inspection Services?
Specialist HVAC pressure systems knowledge, clear reporting and reliable UK-wide service
Air Conditioning Inspection FAQs
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