Will a Bad Expansion Valve Cause AC Not to Get Cold?

When your car’s air conditioning is not blowing cold air, one of the most common causes is a bad expansion valve. The expansion valve controls how much refrigerant enters the evaporator. If it is stuck or partially closed, the refrigerant will not evaporate properly, and your AC may blow warm air instead of cool air.

How a Bad Expansion Valve Affects AC Cooling

• Restricted Refrigerant Flow – limits cooling efficiency.
• Uneven Cooling – some vents may blow colder than others.
• Compressor Damage – over time, a malfunctioning valve puts stress on your compressor.
• Warm Air From Vents – the most obvious symptom customers notice.

Why Choose Qirun Auto Parts

At Qirun Auto Parts Co., Ltd., we have over 25 years of expertise in producing automotive AC control valves. Our products are trusted by international clients because of:

• Professional focus on automotive air conditioning control valves.
• 15+ years of overseas trade experience.
• High-quality production standards with a one-month warranty.
• Fast customer support and worldwide shipping.

Common Questions From Buyers

1. Can I still drive with a bad expansion valve?

Yes, but your AC will not work efficiently. Long-term use may also damage the compressor.

2. How do I know if my expansion valve is failing?

Watch for signs like warm air, frost on the evaporator, or unusual hissing noises.

3. Should I replace or repair?

Replacement is recommended. A defective valve cannot usually be repaired effectively.

Contact Us Today

If you are a global buyer looking for reliable automotive AC control valves, Qirun Auto Parts is your trusted partner.

📍 Address: Foshan City, Nanhai District, Guicheng Street, Shanan 2, Shangyuan South Industrial Zone
📞 Phone: +86-13690143493
📧 Email: a13690143493@gmail.com

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Get a Quote Now

👉 Contact us via email or call +86-13690143493 to discuss your project. Let us supply your business with high-quality AC control valves that meet international standards.

Qirun Auto Parts Co., Ltd. – Leading supplier of automotive air conditioning control valves since 2012.