How To Deal With Failing Auto A/C High Pressure Hoses

Modern auto A/C high pressure hoses are complex. The reason for this is because they make use of both low as well as high pressure. The side with the low pressure is where refrigerant begins in the form of gas, while the other side is high pressure, where refrigerant will be transformed into a liquid which allows it to flow within the system.

How A/C Hoses Operate

Each side works in tandem to make sure the refrigerant continues flowing. The A/C hose is used to transport the refrigerant from a compressor into the accumulator that way it will cool down so it can then be used for cold air which circulates inside the cabin.

The refrigerant carried by the hose is high pressure, meaning it is subjected to elevated stress levels whenever it operates. As a consequence it is vulnerable to failure, and when it does, problems can arise with other system parts. Fortunately, there are a number of warning signs that these hoses give off indicating that something is amiss; the driver just has to be able to recognize them. Below is a list of the most common.

Leaking Near The Hose

Hoses are prone to developing refrigerant leaks, especially as they age. Even a leak which is minor can rapidly remove most of the refrigerant, at which point the air conditioner won’t be able to generate cold air. An inspection will often reveal refrigerant drips or leaks near the fitting or hose. As soon as a leak is detected the hose must be replaced soon otherwise the entire A/C system could be compromised.

The Hose Is Damaged

Since the hose is situated in close proximity to the car’s engine bay, the fit is sometimes too tight and the hose can become damaged by rubbing up on engine components which are in motion. Additionally, the hose can also be damaged from the heat which the engine produces. Inspect the hose and look for loose threads, tears or abrasions. If they are present, there is a good chance that the hose is damaged and in need of replacement.

The A/C Is No Longer Cooling

This is a common problem that is frequently reported by drivers, and may be a symptom of a damaged pressure hose. Because these hoses are responsible for transporting refrigerant, if there is an issue with a hose the larger system won’t be able to generate and circulate cold air within the cabin.

As you can see, the air conditioning pressure hose plays an essential role in cooling the air within the vehicle. If it is defective or becomes damaged, and is not replaced soon, other components may break down.

How To Protect The Hose

One way of protecting the hose is performing regular inspections and changing the oil. Engine oil is crucial to the proper operation of the vehicle’s engine and since the oil is placed within an oil pan, it is beneath the engine which means every internal part that moves must be lubricated by it. Insufficient lubrication will lead to the vehicle components wearing out more rapidly.