Nissens Automotive launch new AC hose solution

Nissens Automotive has expanded its climate comfort system replacement parts offering with an AC hose solution.

To work correctly and operate at optimum efficiency, each element within a vehicle system needs to be in good condition and work in harmony with all the others – Nissens says this is particularly true of the AC because though it utilises certain common properties – such as electrical power from the battery and drive from the engine – arguably it is a standalone system that works independently.

The compressor is often referred to as its heart, but the hoses – which connect all of the components together and transport the oil/refrigerant mixture around the sealed loop – are also vital for the system to function correctly, so can perhaps be compared to its arteries?

Annual checks of the AC system is an important job, and to enable technicians to carry out the work proficiently and use premium quality replacement components, Nissens believes it can help both instruction and parts.

New AC hoses

Nissens has added replacement AC hoses into its growing product portfolio. One of the most important aspects of AC service is to check the condition of the entire sealed loop, not just around the joints to the system’s major components – like the compressor, condenser and heat exchangers – but also along the length of the hoses whether they are sections of solid tube or flexible hose.

Nissens points to oily, dust-attracting areas as a tellsale sign of potential AC hose issues or refrigerant leaks because the oil remains on the surface and dust/dirt sticks to it, so soiling on the hose, joints or surface are clear signs of a leak problem.

In addition, the flexible rubber-based sections can become porous, causing the gradual escape of the refrigerant. Older and higher mileage cars should undergo particularly careful inspection in these areas.

Mechanical damage, even if only light in nature, or vibrations can both expose the hose to risk or the loosening of joints and subsequent refrigerant loss. Cracks, dents and perforations cannot be repaired.

If a potential leak is detected, Nissens insists a proper leak test procedure should be undertaken – including a long-term leak test using a nitrogen-based solution and leak sensor support.

This is important, notes Nissens, because the refrigerant and lubricant – which is necessary for the AC system’s efficient operation – need to be in the correct ratio. Leaks in the system can easily affect it. In addition, these can cause contamination from moisture or foreign particles.

Should a failing joint, crack or split become apparent, the AC hose will need to be replaced, which also provides the opportunity to flush out the old mixture and replenish it with new oil and refrigerant – something that should also be part of a standard AC service operation; however, Nissens suggests this will also require the appropriate pulled vacuum process to remove moisture and facilitate the final charge.

What’s inside the range?

With an initial range covering approximately 25-30% of the European passenger and LCV parc, Nissens’ AC hose range comprises a “meticulous design”, fully compatible with vehicle layouts and modern refrigerants to provide a “one-stop-shop-solution” for AC system repair. Nissens says the hoses are thoroughly tested to ensure a leak-tight, efficient and long, trouble-free service life.

• Double-wall barrier construction (five-layer design): Combines EPDM, nylon and PET layers for refrigerant retention, vibration resistance and corrosion protection

• Helium-tested: Leak-free performance and precise bend alignment for integration into tight layouts

• Temperature range: -40°C to +135°C – suitable for extreme operating conditions

• Everything in one place: Includes pre-mounted O-rings, gaskets and fixed brackets, reducing installation time and eliminating the need for sourcing additional required parts. Orifice tubes, filters and mufflers are also included when applicable. 

• Compatibility with R134a and R1234yf refrigerants: Future-proof repairs expected

• Safe, recyclable packaging: Protects against dirt and moisture during storage and transportation. Features a sustainable, single material design.