🔧 Altima - Cabin Air Filter Replacement

Replacing the cabin air filter helps your Altima’s heating and A/C system breathe properly and keeps dust, pollen, and debris out of the cabin. On the Altima, the filter is accessed from the passenger-side lower dash/glove box area.

Difficulty Level: Beginner | Estimated Time: 10-20 minutes

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⚠️ Safety & Precautions

• ⚠️ Turn the ignition off before working under the dash.
• ⚠️ Do not force plastic trim pieces; they can crack if pulled at the wrong angle.
• ⚠️ The passenger-side airbag is nearby in the dash, but this job does not require airbag removal or battery disconnect.
• ⚠️ Keep small items out of the blower opening so they do not fall into the HVAC box.

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🔧 Required Tools

You'll need the following tools for this repair:

• Trim removal tool set
• Phillips #2 screwdriver
• Flashlight
• Safety glasses
• Nitrile gloves

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Cabin air filter - Qty: 1

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📋 Before You Begin

• 🚗 Park your Altima on level ground.
• 🔒 Shift to Park and set the parking brake.
• 🔑 Turn the ignition off and remove the key fob from the vehicle.
• 🧤 Put on gloves and safety glasses. The old filter may contain dust and leaves.
• 💡 Move the passenger seat fully rearward to give yourself more room.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the Passenger-Side Work Area

• Open the front passenger door fully.
• Use a flashlight to look under the passenger side of the dash near the glove box.
• The cabin filter door is located on the HVAC housing behind the lower glove box area. The HVAC housing is the plastic air box for the heater and A/C system.
• Tip: Take a photo first.

Step 2: Remove the Lower Passenger Dash Panel if Needed

• Use a trim removal tool set to gently release the lower passenger-side trim panel if it blocks access.
• A trim removal tool is a plastic pry tool that helps remove clips without scratching the interior.
• If screws are fitted, use a Phillips #2 screwdriver to remove them.
• Set the panel and screws aside in a safe place.
• No torque spec is required for the plastic trim screws; reinstall snug only.

Step 3: Find the Cabin Filter Cover

• Use a flashlight to locate the narrow rectangular cabin filter cover on the side of the HVAC housing.
• The cover usually has small plastic locking tabs.
• Look for the cover shape rather than the filter itself; the filter sits behind this door.

Step 4: Remove the Filter Cover

• Use your fingers to squeeze or release the plastic tabs on the cabin filter cover.
• If the tab is stiff, use a trim removal tool set carefully to help release it.
• Pull the cover straight off and set it aside.
• Do not snap the tabs.

Step 5: Remove the Old Cabin Air Filter

• Use your fingers to pull the old cabin air filter out of the slot.
• If it is tight, gently pinch the filter sides and slide it out slowly.
• Use a flashlight to check for leaves or debris inside the filter opening.
• Do not use metal picks or sharp tools inside the HVAC housing.

Step 6: Check the Airflow Direction

• Look at the airflow arrow printed on the old filter before throwing it away.
• Match the new cabin air filter arrow to the same airflow direction.
• Airflow direction means the direction air travels through the filter, not the direction the filter slides in.
• Arrow direction matters.

Step 7: Install the New Cabin Air Filter

• Slide the new cabin air filter into the filter slot by hand.
• Keep the filter square and do not crush the pleats. Pleats are the folded paper sections that trap dust.
• Push it in until it sits fully inside the housing.
• If it resists, pull it back out and realign it. Do not force it.

Step 8: Reinstall the Filter Cover

• Reinstall the cabin filter cover by hand.
• Press until the tabs click into place.
• Gently tug the cover to confirm it is secure.

Step 9: Reinstall the Lower Passenger Trim

• Use your hands to align the lower passenger trim panel with its clips.
• Press the panel into place until the clips seat fully.
• If screws were removed, use a Phillips #2 screwdriver to reinstall them.
• Torque to snug by hand only; do not overtighten plastic trim screws.

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✅ After Repair

• ✅ Start your Altima and turn the blower fan on low, then high.
• ✅ Check that air comes from the vents normally.
• ✅ Listen for clicking, rubbing, or leaf-noise from the blower area.
• ✅ If airflow is weak, recheck that the filter is fully seated and facing the correct direction.
• ✅ Replace the cabin air filter about every 12 months or 12,000-15,000 miles, sooner in dusty areas.

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💰 DIY vs Shop Cost

Shop Cost: $80-$150 parts + labor

DIY Cost: $15-$35 parts only

You Save: $65-$115 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.3-0.5 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.