Can a deformed cabin air filter still be used?

[MaddoxMarie]

A deformed cabin air filter can still be used, and its functions include: 1. Ensuring the filter fits tightly against the housing to prevent unfiltered air from entering the cabin; 2. Separating dust, pollen, and abrasive particles from the air; 3. Adsorbing moisture, soot, ozone, odors, carbon oxides, SO2, and CO2 from the air; 4. Preventing car windows from fogging up, ensuring clear visibility for drivers and passengers, and enhancing driving safety; 5. Maintaining clean air in the passenger compartment and preventing bacterial growth. The steps to replace the cabin air filter are: 1. Open the glove box cover; 2. Pull the fixing buckle on the right side of the glove box outward with force; 3. Squeeze both sides of the glove box toward the center and remove it; 4. Press the fixing buckles on both sides of the cover plate firmly to remove it.

[StChase]

I think if the cabin air filter is deformed, you should definitely stop using it immediately. Last time when I helped a friend inspect their car, we encountered this exact situation. The deformed filter allowed dust to directly enter the cabin air, making breathing feel itchy, which is especially dangerous for children or people with allergies. Long-term use of a deformed filter can also block airflow channels, reducing AC airflow and increasing the blower motor's workload, potentially burning out the motor. Repairs for this can cost hundreds in no time. I recommend removing and inspecting it immediately - if it's deformed, don't hesitate to replace it. Filters only cost around 50-100 RMB, and there are plenty of online tutorials for easy DIY replacement. Normally, you should check the filter's condition every six months to prevent excessive dust buildup that could cause deformation. Don't wait until problems arise - keeping fresh air in your car makes driving much more relaxing.

[MacColin]

As a budget-conscious person, I've found that a deformed cabin air filter can be temporarily used, but it's not recommended to persist with it. Deformation causes uneven filtration, allowing dust to accumulate deeper in the AC system. Over time, a clogged evaporator will require expensive cleaning, costing at least several hundred dollars in repairs. The blower also works harder, increasing fuel consumption. My old car's flattened filter lasted two months before airflow became unbearably weak - replacing it restored performance instantly. Don't penny-pinch only to pay more later; replace deformed filters immediately. Online stores offer cost-effective options that are simple to install. During routine maintenance, avoid applying pressure to the filter housing and set quarterly inspection reminders.

[DelMason]

From my car repair experience, a deformed cabin air filter is usually caused by improper installation or compression damage. If the filtering surface is compromised, it can't effectively block dust, which may leak into the cabin, affect air quality, and potentially breed bacteria. The AC performance will also decline, resulting in weaker, uneven airflow and inconsistent cooling/heating. When inspecting the filter, replace it immediately if deformation is found - don't attempt temporary repairs as the material is fragile. For routine maintenance, simply check the filter's alignment every six months or before long trips to ensure safer and more comfortable driving.