Finding out noises from your car very often is never pleasant, so hearing air conditioning noises on your BMW 3 Series can be a issues. This warning sign may be a sign of a moderate problem as well as a warning of a much significant repair to come. In any circumstance, it is very important to investigate its origin and take the necessary actions to solve the issue, it is with this in mind that we desired to prepare this document to support you understand it better. We will first look at the plausible causes for noise in the ventilation of your BMW 3 Series. Then, in a second part, we will look into the noises linked to the air conditioning of your car.air-conditioning-noisebmw-3-series

Noise air conditioning BMW 3 Series : most basic origin coming from general ventilation

Loud noise or roar from ventilation or fan of your BMW 3 Series

Finding out a air conditioning noise on BMW 3 Series is never pleasant, and can make your journeys especially annoying. Ventilation is useful whether it is in winter to warm up or defog or to cool down the car during the summer. In any circumstance, having a dull noise from the air conditioning of your BMW 3 Series is a issues that must be resolved. This noise is very often affiliated with a worn or dirty fan motor. To make sure that that the issue is triggered by the ventilation, we recommend highly that you open the ventilation of the issue spot and check out the condition of the fan, possibly grease it first, and if this is not sufficient, it will certainly have to be replaced.

I hear an heater fan noise like a click BMW 3 Series

We will now take a look at the clicking noises you may hear from your ventilation. A clicking noise from BMW 3 Series heater fan is often a consequence of a duct or fan blocked by a foreign body. This noise is supposed to build up as the air flow in the circuit raises up. Maintain in mind to check the cleanness of your air inlets at the top of your hood, for example. You will then have to open the conduit in question and find the foreign body. If the issue lasts, take your car to your garage.

I hear an hissing heater fan noise BMW 3 Series

Finally, if you note a whistling noise in the ventilation of your BMW 3 Series, it may be that the origins of it is linked to a fan that has shifted or is starting to dry . In any circumstance, you will have to check out the fan in question to visually check its condition. The easiest technique is to open the ventilation circuit again, and rotate the system while you are examining its proper operation, you can try to grease it to limit this noise, but it is very likely that the final answer is to swap it. If you have a whistling noise but are not sure if it is linked to ventilation, we recommend you to read this content about front end noise on BMW 3 Series to discover its source.

I hear an heater fan BMW 3 Series noise : specific air conditioning

Slamming noise air conditioning BMW 3 Series

We will now look into the precise part of the air conditioning side of your heater fans and the origin of the noise it can produce. A clicking noise in your air conditioning, if it is brief and when you start it only signifies a good function of your air conditioning compressor which lights up, this noise can be loud. In contrast, if you hear a clicking noise or air conditioning scrap metal on your regular BMW 3 Series, you will have to be concerned in this circumstance. Indeed, it can announce an air conditioning compressor clutch, or compressor itself that needs to be replaced. So have your mechanic check its proper performance.

Pshhh noise / hissing air conditioning BMW 3 Series

If you detect pshhhh or whistling noise on the air condition side of your heater fan on BMW 3 Series, but in cooling mode, you have two alternatives to explicate this issue. Indeed, at first, the most likely reason is that your air conditioning equipment is running out of gas, to check it you should encounter that the cold it has to emit is no longer as cold as before, if so, have your air conditioning system charged on your BMW 3 Series and the issue should be fixed. On the other hand, you may experience a system leak and this psshhh or hiss may be linked to the gas getting away from the device. You can test the leak by integrating a tracer into your air conditioning system and monitoring for leaks, or more easily take your car to your mechanic.