HELLA AC expansion valves: regulating comfort with precision and control

HELLA ac expansion valves for passenger cars, light commercial vehicles and commercial vehicles are developed to ensure optimal thermal management and long-term system performance. HELLA AC expansion valves offer a dependable solution for maintaining cabin comfort and system efficiency.

Efficient refrigeration: Our expansion valves regulate the amount of refrigerant precisely and reliably – for fast and even cooling in the vehicle interior.
Optimised refrigerant flow: Thanks to their control, HELLA expansion valves ensure an optimised refrigerant flow into the evaporator – for maximum comfort and safety.
Constant climate comfort: Even with changing outside temperatures, our expansion valves ensure a pleasant driving experience at all times.
Easy2Fit: Designed for precise fitment. Scope of delivery is always with relevant accessories, if required and reduce vehicle downtime!

Car refrigerant & oil filling quantities

Localizador de peças sobressalentes

Identificação manual do veículo OE-no.

Localizador de peças sobressalentes

Identificação simples do veículo com matrícula Determine também as peças sobressalentes com números OE Informações detalhadas sobre o produto Encontre grossistas perto de si

Why HELLA?

HELLA A/C Compressors additional benefits

HELLA A/C Expansion Valves' additional benefits

With their precise control and compact design, HELLA AC expansion valves support stable A/C operation and driver comfort in all driving situations.

Enhanced system efficiency: Accurate flow regulation helps minimize energy loss and maximizes cooling output.

Reliable under pressure: Performs consistently even under rapid load changes or high ambient temperatures.

System protection: Prevents refrigerant overfeed, reducing risk of evaporator icing or compressor overload.

Broad vehicle coverage: Available for a wide range of vehicle makes and system types.

These benefits make HELLA AC expansion valves an essential part of any high-performing A/C system.

How does it work?

HELLA AC expansion valves regulate the flow of refrigerant into the evaporator, helping maintain optimal cooling conditions. Here's how:

1. Pressure reduction: The valve drops the pressure of high-pressure liquid refrigerant coming from the condenser.

2. Controlled flow: Based on sensor input or system demand, it meters the exact amount of refrigerant entering the evaporator.

3. Evaporator supply: This low-pressure liquid refrigerant can now absorb heat from the cabin air, delivering cooling.

4. Cycle continuity: As the cooling demand changes, the valve adapts to maintain stable temperatures and efficient performance.

This dynamic control ensures that the refrigerant is used efficiently, avoiding overcooling or compressor stress.

Why and when to replace?

Inconsistent cooling: Fluctuating or weak A/C performance may point to a sticking or failing valve.

Evaporator icing: Excessive refrigerant flow can cause ice buildup, often due to valve malfunction.

Compressor strain: Incorrect flow regulation can overload the compressor and increase wear.

System maintenance: Expansion valves should be replaced when major A/C components are renewed, such as the compressor or evaporator.

Replacing a faulty HELLA AC expansion valve helps maintain consistent comfort and protects the A/C system from premature wear.

What does HELLA offer?

Premium Technical Expertise and Service: Our technical workshop service, being provided through our experts, is rounding off our technical service. In addition to Tech World, our Partner World offers targeted content for wholesalers, helping them to better serve their customers.

HELLA Gutmann's Diagnostic Competence: With our first-class technical support, workshops will be able to repair the cars of today – and tomorrow. Our technical competence in workshop equipment will support this. We offer advanced vehicle diagnostics also for AC and EC, ensuring that workshops are able to deliver top-notch service.

Target-oriented Marketing Services: Entire communication to market and supporting the W/D with a powerful communication package.

Vast Data Management Services: HELLA’s sophisticated data management services allow for precise and efficient parts identification, ensuring that wholesalers and workshops can quickly find the right parts.

Tailormade Logistic Solutions: Our logistics are designed to meet the specific needs of our partners, ensuring timely and reliable delivery of products.

More details on our AC Expansion valve

Vehicle-specific spare parts

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Vehicle-specific spare parts

Technical product information

In this database, you will find technical information about our products and specific vehicle systems – prepared by experienced technicians and mechanics.

Technical product information