Pressure Testing & Leaking Ductwork Repairs

Ensuring Airtight & Efficient Ventilation Systems

Leaking ductwork can cause significant energy losses, reduced system efficiency, and non-compliance with ventilation standards. At Gemini AMPM, we provide ductwork pressure testing and leak detection to identify and repair faulty duct systems, ensuring optimal airflow, compliance, and energy efficiency.

ventilation system pressure testing service

Our expert engineers carry out testing in line with BS EN 1507, BS EN 12237, and DW/144 standards, providing detailed leakage reports and remedial solutions for commercial, industrial, and critical environments.

Our Pressure Testing & Duct Repair Services

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Ductwork Pressure Testing & Leak Detection

We conduct comprehensive air leakage testing on new and existing HVAC ductwork, ensuring it meets industry air-tightness standards. Our testing includes:

  • Positive & Negative Pressure Testing – Verifying the integrity of supply and extract ducts
  • Smoke Testing & Visual Inspections – Identifying leaks & weak points
  • Air Leakage Rate Measurement – Ensuring compliance with BS EN 12237 (circular ducts), BS EN 1507 (rectangular ducts), and DW/144 industry guidelines
  • System Performance Reports – Providing full certification and compliance documentation


Reduces energy waste, improves indoor air quality & meets UK ventilation regulations

Leaking Ductwork Repairs & Sealing Solutions

Once leaks are identified, we provide cost-effective and long-lasting sealing solutions to restore airtight performance:

  • Duct Sealing with Specialist Compounds – Internal and external application
  • Mechanical Repairs – Fixing faulty duct joints, access doors & panel gaps
  • Aerosol Duct Sealing Technology – A non-invasive, advanced sealing method for hard-to-reach ducts
  • System Rebalancing & Recommissioning – Ensuring airflow efficiency after repairs


Restores airflow efficiency, prevents energy losses & ensures compliance

Why Choose Gemini AMPM for Ductwork Testing & Repair?

Fully Compliant Testing

 BS EN 1507, BS EN 12237 & DW/144 standard checks

Energy Efficiency Focused

Reducing leakage & lowering energy costs

Advanced Testing Techniques

Smoke, pressure & airflow testing

Certification & Compliance Reports

Full documentation for regulatory audits

Sustainability Driven

Minimising energy wastage & carbon footprint

Accreditations & Compliance

See how we’ve helped clients improve ventilation efficiency with our pressure testing and duct repair solutions.

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Gemini AMPM offer duct pressure testing, air leakage testing, HVAC system sealing, ductwork repair solutions, BS EN 12237 compliance, DW/144 duct sealing, commercial ventilation leak detection, hospital ventilation compliance, energy-efficient ductwork, and aerosol duct sealing technology.

Looking to improve efficiency, reduce energy waste, and ensure compliance with UK ventilation standards.

Contact Us for Duct Pressure Testing & Repairs

Worried about air leaks and inefficiencies in your ventilation system? Contact Gemini AMPM today for expert pressure testing, leakage detection, and repair solutions.

Call to Us Request Consultation