Co2/R744

Refilling a CO₂ (R744) Air Conditioning System: Why This Is a Job for a Specialist
Refilling an air conditioning system with CO₂ (R744) is a complex procedure that must only be performed by a certified air conditioning specialist. This is not something you can safely do at home. It’s essential to contact a company with specific experience in CO₂-based systems.

Why You Can’t Do It Yourself
Safety
CO₂ systems operate under extremely high pressure—up to 140 bar. Mishandling can lead to dangerous situations.

Legal regulations
Air conditioning servicing is governed by strict European laws. Only certified professionals are allowed to perform these tasks.

Specialized equipment and expertise
Refilling a CO₂ system requires advanced tools and knowledge that most people don’t have access to.

Why You Should Hire a Specialist
Professional expertise
Certified technicians have the training and experience needed to safely and properly service the system.

Leak detection
A professional can check for leaks and repair them on the spot if needed.

Safety and system integrity
Proper servicing prevents damage and ensures the system operates safely and efficiently.

Step-by-Step: Refilling a CO₂ Air Conditioning System
Connect to AC machine
The system is connected to specialized equipment to analyze pressures and performance.

Vacuuming the system
Air and moisture are removed by vacuuming the system.

Adding UV tracer
A UV dye is added to help detect any future leaks.

Adding oil
Fresh oil is added according to the manufacturer’s specifications.

Filling with refrigerant (R744)
The correct amount of CO₂ refrigerant is added with precision.

Final check
Pressure readings and outlet temperatures are checked to ensure optimal performance.