Frigidaire FFMV1745TS Grease Filter Replacement – Step-by-Step Guide

Grease Filter Replacement Guide

If you’ve noticed decreased ventilation or grease accumulation in your Frigidaire FFMV1745TS over-the-range microwave, chances are the grease filter needs a good cleaning or a replacement. This filter traps cooking grease and prevents it from entering the ventilation system, which is key for maintaining safety and efficiency. Trust me, this is an easy maintenance task you should perform regularly.

Why Grease Filters Matter

Grease filters play a crucial role in both safety and performance:

• Prevent grease from entering ventilation ducts (fire hazard)
• Maintain proper airflow and ventilation efficiency
• Reduce odors from cooking
• Protect the ventilation fan motor from grease buildup
• Required for proper operation of over-the-range microwaves

When clogged, a filter forces the ventilation fan to work harder, reducing airflow and creating a fire hazard from accumulated grease.

When to Clean or Replace

It’s a good practice to clean the filter monthly, or replace it if:

• Filter is heavily coated with grease (can’t be cleaned effectively)
• Filter is damaged, bent, or has holes
• Filter is more than 6-12 months old
• Ventilation is still poor after cleaning
• Filter shows signs of deterioration

Parts Needed

• Frigidaire 5304464105 Grease Filter (Part #: 5304464105)

Note: If your filter is just dirty, you can clean it instead of replacing it. Only replace if it’s damaged or heavily soiled.

Tools Required

• Dish soap or degreasing cleaner
• Warm water
• Soft brush or sponge (for cleaning)
• Clean cloth or paper towels
• Step stool or ladder (if needed to reach filter)

Step-by-Step Instructions

Step 1: Locate the Grease Filter

The grease filter is located on the bottom of the microwave, directly above the cooktop. It’s a metal mesh filter that slides out. Look for a release lever, button, or tab on the front edge of the filter.

Step 2: Remove the Filter

Press the release lever or pull the tab to release the filter. It should slide forward and down. Some models tilt down before sliding out, so pull it straight out carefully to avoid spilling any accumulated grease.

Step 3: Inspect the Filter

Examine the filter for:

• Amount of grease buildup
• Damage (bent, holes, or deterioration)
• Clogging (grease blocking the mesh)
• Overall condition

If the filter is heavily soiled or damaged, replace it. If it’s just dirty, proceed with cleaning.

Step 4: Clean the Filter (If Reusing)

If you’re cleaning the existing filter:

• Fill a sink or basin with hot, soapy water
• Submerge the filter completely
• Let it soak for 15-30 minutes to loosen grease
• Use a soft brush or sponge to gently scrub away grease
• Rinse thoroughly with warm water
• Allow to air dry completely before reinstalling

Important: Make sure the filter is completely dry before reinstalling to prevent mold growth.

Step 5: Clean the Filter Housing

While the filter is removed, take the time to clean the filter housing area:

• Wipe away any accumulated grease or debris
• Clean the area where the filter sits
• Remove any food particles or buildup
• Ensure the housing is dry before reinstalling the filter

Step 6: Install the New or Cleaned Filter

If you’re installing a new filter, remove it from the packaging and position it so it slides into the housing correctly. It should slide in smoothly and lock into place; you might hear a click when it’s properly seated. Make sure the filter sits flush and is aligned correctly.

Step 7: Verify Installation

Check that the filter:

• Is properly seated and locked in place
• Sits flush with the bottom of the microwave
• Doesn’t wobble or move when touched
• Is properly aligned (not crooked)

Step 8: Test Ventilation

Turn on the ventilation fan and verify it operates properly. The fan should run smoothly without excessive noise, and you should feel strong airflow. If ventilation is still poor after cleaning or replacement, check the charcoal filter (if using recirculating mode) or inspect the ventilation ductwork.

Maintenance Schedule

To keep your grease filter working properly:

• Clean monthly if you cook frequently
• Clean every 2-3 months for light use
• Replace every 6-12 months depending on use
• Check the filter more often if you notice reduced ventilation
• Clean immediately if you notice excessive grease buildup

Troubleshooting

If ventilation is still poor after cleaning or replacement:

• Check the charcoal filter (if using recirculating mode)
• Inspect the ventilation fan for damage or obstruction
• Check the ventilation ductwork for blockages
• Verify the microwave is set to the correct ventilation mode
• Ensure the exterior vent cover (if vented outside) is not blocked

Fire Safety Warning

Remember, a clogged or dirty grease filter is a fire hazard. Grease buildup can ignite if exposed to high heat, so never operate your microwave with a heavily soiled filter. Regular cleaning is essential for safety.

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How Much Does This Repair Cost?

Repair route	Typical cost
Do it yourself	$10–$25 (parts)
Professional repair	$75–$150 (parts and labor)

Replacement grease filters for the Frigidaire FFMV1745TS typically run $10–$25 for a DIY part purchase, and the job takes about 5 minutes with no tools required. If you decide to call a technician, expect to pay $75–$150 once you factor in the service call fee, making this one of the best repairs to handle yourself.

Recommended Products

Microwave Filter Replacement 7.64” x 5.12” for GE WB06X10309 WB06X10359 Microwave Grease Filter – Also Fit’s LG Kenmore and More – Filters Kitchen Oven Air Entering Over the Range Vent Fan (2-Pack)

For those maintaining their Frigidaire microwave’s ventilation system, this universal grease filter replacement offers an affordable 2-pack solution that fits multiple microwave brands including GE, LG, and Kenmore models. The 7.64” x 5.12” dimensions make it compatible with various over-the-range microwaves, while the durable mesh construction effectively captures grease and odors before they accumulate in the vent duct. Replacing grease filters regularly extends the lifespan of the microwave’s ventilation fan and maintains optimal kitchen air quality, making this product a practical choice for budget-conscious homeowners.

5304464105 Microwave Vent Filter 5 x 7-5/8,Fit Frigi-daire G-E Microwave,Replace WB06X10608 5304517871 5304509444 (2 Pack by TOMOON)

The TOMOON 5304464105 microwave vent filter is an excellent choice for maintaining the Frigidaire FFMV1745TS, as it directly replaces the original grease filter mentioned in this guide with the same 5 x 7-5/8 dimensions for a perfect fit. This 2-pack option provides exceptional value by offering a spare filter on hand, reducing downtime between replacements and ensuring consistent ventilation performance. The filter effectively captures grease and cooking particles before they accumulate in the ductwork, which helps extend microwave lifespan and maintain optimal airflow.

The Frigidaire Grease Filter That Actually Stops the Buildup on This Model

The FFMV1745TS takes a standard 5 x 7-5/8 filter, and getting the right replacement makes all the difference between a quick 10-minute fix and ordering the wrong part twice. This filter is the actual barrier between your stovetop grease and your ductwork, so a proper fit matters.

What works

• Dimensions match the FFMV1745TS frame exactly—no forcing, no gaps where grease sneaks past the edge.
• Two-pack gives you a spare, which is practical because you’ll want to swap in a clean filter while you wash the first one instead of running the microwave vent unfiltered.
• The pleated mesh material actually catches fine grease spray that aluminum mesh alone lets through, reducing how often you need replacements.

What doesn’t

• Pleated filters clog faster than bare mesh if you’re not replacing every 3–4 months during heavy cooking—plan for that maintenance cycle.
• If your microwave is an older FFMV model with a different mounting bracket design, you’ll need to verify the frame size before ordering to avoid another return.

I’ve seen plenty of folks grab a generic 7 x 10 filter thinking it would work and end up with a mismatch that compromises airflow. The Frigidaire-specific dimensions on this one eliminate that guesswork. 5304464105 Microwave Vent Filter 5 x 7-5/8,Fit Frigi-daire G-E Microwave,Replace WB06X10608 5304517871 5304509444 (2 Pack by TOMOON)