Why Not Use Recovered Refrigerant? 

Understanding the Risks

What Is Recovered Refrigerant?

Recovered refrigerant is gas that has been extracted from another vehicle’s air conditioning system - often during repairs, decommissioning, or end-of-life disposal - and stored for potential reuse. While this practice can seem environmentally friendly or cost-effective at first glance, it introduces significant risks that can compromise the performance, reliability, and safety of your air conditioning system.

The Contamination Problem: It’s Not Just About the Gas

Contamination is real. Even if a recovered refrigerant bottle tests as “100% R134a” (the correct type for many vehicles), it can still contain dangerous levels of oil, moisture, acids, and—critically—metal fragments. These contaminants are invisible to the naked eye but can wreak havoc inside your vehicle’s delicate AC system.

Real-World Example: 

We tested a bottle of recovered refrigerant that, on paper, was “pure” R134a. But laboratory analysis revealed a different story: high oil content and visible metal fragments. This contamination didn’t just pose a theoretical risk—it was a ticking time bomb for any vehicle unlucky enough to receive it.

What does this mean for your car?

❄       Metal fragments can score and destroy compressor bearings.

❄       Excess oil can block expansion valves, reducing cooling performance.

❄       Moisture and acids can corrode internal components, leading to leaks and system failure.

❄     Expensive repairs, reduced system life, and a car that’s never as comfortable or as reliable as it should be.

The Science of Contamination: How It Damages Your AC System

1.         Compressor Damage

The compressor is the heart of your air conditioning system. It relies on clean, uncontaminated refrigerant and oil to lubricate its moving parts. When metal fragments or sludge from contaminated gas circulate through the system, they can cause:

❄       Bearing failure: Metal particles score the surfaces, leading to noise, overheating, and eventual seizure.

❄       Lubrication breakdown: Contaminated oil loses its protective properties, accelerating wear.

❄       Electrical burnout: Moisture and acids can attack the compressor’s windings, causing short circuits and catastrophic failure.

2.        Blocked Expansion Valves and Reduced Cooling

The expansion valve (or TXV) is a precision component that meters refrigerant flow into the evaporator. Even tiny particles or excess oil can clog its narrow passages, leading to:

❄       Reduced cooling performance: The system can’t absorb enough heat, so your car stays hot.

❄       Frost or ice buildup: Blockages can cause uneven cooling and ice formation on the evaporator.

❄       Erratic operation: Fluctuating pressures and temperatures make the system unreliable.

3.        Shortened System Life and Higher Maintenance Costs

Contaminated refrigerant doesn’t just cause immediate problems—it sets the stage for a cascade of failures:

❄       Corrosion: Moisture and acids eat away at pipes, seals, and heat exchangers.

❄       Frequent breakdowns: Each failure introduces more debris, making future repairs less effective.

❄       Higher costs: What starts as a “cheap regas” can quickly turn into a series of expensive repairs, part replacements, and lost time.

In summary:

Using recovered or contaminated refrigerant is like putting dirty oil in your engine. It might work for a while, but the damage is inevitable—and often irreversible.

 The Regulatory and Safety Perspective: Why New Zealand’s Codes Matter

Legal and Industry Standards

New Zealand, like many countries, has strict regulations governing the handling, recovery, and reuse of refrigerants. The 2025 Australian and New Zealand Refrigerant Handling Codes of Practice make it clear:

❄       Recovered refrigerant must be tested and, if necessary, reprocessed to meet AHRI Standard 700 before reuse in any system other than the one it was removed from.

❄       Deliberate release of refrigerant into the atmosphere is illegal, and all recovery, recycling, and disposal must be handled by certified professionals.

Certification and Purity: The Gold Standard

AHRI Standard 700 sets the benchmark for refrigerant purity, specifying maximum allowable levels of contaminants (moisture, oil, acids, particulates, and non-condensable gases). Only refrigerant that meets or exceeds this standard is considered safe for use in modern AC systems.

Key Point:

Most recovered refrigerant in the field does NOT meet these standards unless it has been professionally reclaimed and certified. Using uncertified gas is a gamble with your vehicle’s health—and your wallet.

MAX AC’s Policy: 

MAX AC only uses NEW REFRIGERANT from Certified Suppliers.

Our Commitment to Quality and Safety:

At MAX AC, we’ve made a deliberate choice:

❄       We only use 100% new refrigerant from reputable, certified suppliers.

❄       We never reuse or mix with recovered gas, no matter how “clean” it appears.

❄       Any gas we recover from vehicles is sent to a specialist company for separation and re-purification—not reused in customer vehicles.

This policy isn’t about making an extra dollar, it’s about protecting your investment, your comfort, and your safety.

Supplier Assurance: Why Certification Matters:

Not all refrigerant entering New Zealand meets the highest purity standards. That’s why we source exclusively from suppliers who guarantee 99.9% purity and provide certification for every batch. This traceability ensures that what goes into your car is exactly what the manufacturer intended—nothing more, nothing less.

Why does this matter?

❄       Peace of mind: You know your system is filled with the correct, uncontaminated gas.

❄       Warranty protection: Many vehicle and compressor warranties are voided if contaminated or uncertified refrigerant is used.

❄       Environmental responsibility: We comply with all legal and ethical standards for refrigerant handling and disposal, helping to protect New Zealand’s environment for future generations.

 How MAX AC Handles Regassing: Process and Quality Control:

The Regas Process: Step-by-Step

1.       System Inspection and Leak Detection:

Every regas starts with a thorough check for leaks, damage, or underlying faults. We never “top up” a leaking system, these only masks problems and introduces more variables.

2.       Recovery of Old Refrigerant:

Any existing gas is safely recovered using certified equipment. We never vent refrigerant to the atmosphere.

3.       Pressure Test:

The system is pressure tested to ensure no leaks, to ensure you are not back in a month for another regas.

3.       Vacuum and Moisture Removal:

The system is evacuated to remove air and moisture, which can cause acid formation and corrosion.

4.       Charging with NEW, Certified Refrigerant:

We charge the system with the exact type and quantity of new refrigerant specified by your vehicle’s manufacturer.

5.       Performance and Testing:

After regassing, we verify that the system is cooling efficiently and operating within safe pressure ranges.

6.       Final Inspection and Customer Education:

We explain what was done, provide documentation, and offer tips for maintaining your AC system year-round.

Why this matters:

Every step is designed to ensure your air conditioning system runs at peak performance, with MAXimum performance, reliability and minimum risk.