Choosing the best filter for a window air conditioner starts with fit: a filter that does not match your unit may not slide into place or cover the intended area. The options below include replacement filters for specific GE and Frigidaire models, plus a cut-to-fit sheet for many window units. Check your air conditioner’s model number and the filter dimensions before ordering.
Table of Contents
Quick Comparison
| Product | Best For | Size or Compatibility | Notable Feature |
|---|---|---|---|
| HEBRAR WJ85X21746 GE Replacement Filter | Owners of compatible GE window units | 13 x 7.5 inches; check model list | Fiberglass construction; listing says it can be washed and dried |
| Giokyi WJ85X21746 GE Replacement Filter | Owners of listed GE models | 12.99 x 7.48 inches; check model list | Replaces several listed part numbers |
| Frigidaire FRPARAC11 RAC-11 Filter | Owners of select Frigidaire units | FHWC104WB1, FHWC124WB1, FHWW104WD1, and FHWW124WD1 | Listing recommends replacement every three months, or more often as needed |
| Wintcomfort Cut-to-Fit Filter | Units that need a custom-sized filter | 24 x 15 x 1/4 inches before trimming | Electrostatic non-woven polyester fabric |
Our Picks: Best Filter For Window Air Conditioner reviews
HEBRAR WJ85X21746: A Washable Replacement for Listed GE Models
This HEBRAR filter is a replacement for GE part WJ85X21746. The listing also gives several alternate part numbers, including AP6280063, 4588851, and PS12171954. Its stated size is 13 x 7.5 inches, so compare that measurement with your old filter and confirm your air conditioner model is on the compatibility list before buying.
The filter is made from fiberglass, which the listing describes as water-resistant and air-permeable. It is intended to capture common particles such as dust, pollen, and pet dander. The listed care instructions say to remove the filter, wash it with warm, soapy water, rinse it, and let it dry fully before reinstalling. Do not put it in a dishwasher.
This is a practical option if you have a compatible GE unit and want a replacement with cleaning instructions rather than a cut-to-size sheet. Its main limitation is that the fit is model-specific; the dimensions and part number should match your unit before you order. As with any room air conditioner filter, it is not a substitute for a separate air purifier if you need specialized air cleaning.
Pros:
- Designed as a replacement for WJ85X21746 and several listed alternate part numbers
- Stated 13 x 7.5-inch size makes it easier to compare with the original
- Fiberglass material is described as washable and air-permeable
- Listing names compatible GE models, including several AHQ, AHR, and AHW series units
Cons:
- Not a universal filter; model compatibility needs careful checking
- Must be fully dry before reinstalling after washing
Verdict: Choose the HEBRAR if your GE model and existing filter match the listing, and you want a washable replacement in the stated size.
Giokyi WJ85X21746: A Compact GE Part-Number Replacement
Giokyi’s filter is another replacement for GE part WJ85X21746. The listing says it also replaces AP6280063, 4588851, A0010209471, and PS12171954. Its stated dimensions are 12.99 x 7.48 inches, nearly the same as the HEBRAR option, but even small differences can matter if a filter channel is tight.
The product is listed for a range of GE models, including AHQ06LYQ1, AHQ06LYW1, AHR05LWQ1, and AHR05LWQ2. It is described as a high-quality filter intended to catch airborne impurities while maintaining airflow, but the listing does not specify a filtration rating or give detailed cleaning instructions. Check your owner’s manual for care guidance rather than assuming it can be washed.
This option makes sense when the part number on your existing filter matches and your model appears on the supplied compatibility list. Compared with the HEBRAR, its stated size is a fraction smaller and the product description focuses more on part-number replacement than on cleaning. Neither detail alone guarantees a better fit, so use your original filter and model number as the guide.
Pros:
- Replaces several listed GE filter part numbers
- Provides a specific size for comparison with your original filter
- Lists a range of compatible GE window air conditioner models
- Designed as a direct replacement rather than a sheet that needs trimming
Cons:
- Compatibility is limited to listed models and should be verified
- Listing does not provide detailed filter-cleaning instructions or a filtration rating
Verdict: The Giokyi is a sensible GE replacement when its part number and model list match your unit, especially if you prefer a ready-sized filter over a cut-to-fit sheet.
Frigidaire FRPARAC11 RAC-11: A Model-Specific Replacement
The Frigidaire FRPARAC11 RAC-11 is made for select Frigidaire air conditioners: FHWC104WB1, FHWC124WB1, FHWW104WD1, and FHWW124WD1. The listing says the filter collects pet hair and other particles and is intended to support cleaner air and efficient operation. It does not provide a filter size or material, so confirm the RAC-11 part designation against your unit before ordering.
Unlike the two GE options above, this filter is not presented as a broad replacement for multiple brands or as a sheet you trim yourself. It is the more direct choice for the four Frigidaire models named in the listing. The product information recommends replacement every three months, or more often as needed; follow your unit’s manual if it gives different care or replacement directions.
The main trade-off is its narrow compatibility list. If your Frigidaire model is not one of the four listed, do not assume this filter will fit just because the brand matches. Its model-specific design is helpful when your unit is included, but it offers less flexibility than the Wintcomfort cut-to-fit option.
Pros:
- Made for four specifically named Frigidaire models
- Listing identifies pet hair and other particles as targets
- Provides a replacement interval as a starting point for maintenance
Cons:
- Compatibility list is limited to select Frigidaire models
- Listing does not provide dimensions or material details
Verdict: Pick the FRPARAC11 if your unit is one of the four listed Frigidaire models and you want a model-specific replacement rather than a filter sheet to cut yourself.
Wintcomfort Cut-to-Fit Filter: A Flexible Sheet for Many Window Units
Wintcomfort’s filter is a 24 x 15 x 1/4-inch sheet made from electrostatic non-woven polyester fabric. It is designed to be trimmed to fit, which can help if your window air conditioner needs a less common size or you cannot find a model-specific replacement. The listing says it can trap dust, pollen, dander, and other common airborne pollutants.
Unlike a replacement molded or cut for a particular model, this sheet puts more responsibility on you: measure the original filter area carefully and cut the material to the required dimensions. The listing describes installation as placing the filter in the unit, but you should make sure the finished piece sits securely and does not obstruct airflow or moving parts.
This is the most flexible pick in the group, but it is not the simplest choice if your air conditioner uses a specific frame or filter shape. It also requires trimming, while the GE and Frigidaire options are listed as replacements for named models. The polyester construction may suit shoppers looking for a sheet-style filter, but the product information does not provide a filtration rating or a replacement schedule.
Pros:
- Large sheet can be cut to fit a range of window air conditioner openings
- Made from electrostatic non-woven polyester fabric
- Listing identifies dust, pollen, and dander among the particles it can trap
- Useful when a model-specific replacement is difficult to match
Cons:
- Requires careful measuring and trimming before installation
- Does not include model-specific compatibility details or a filtration rating
Verdict: Choose Wintcomfort when you need a customizable sheet and are comfortable measuring and cutting it to fit your unit.
How to Choose a Filter for a Window Air Conditioner
Match the Filter to Your Air Conditioner Model
Start with the model number on your air conditioner, not just the brand name. A filter listed for one GE or Frigidaire unit may not fit every unit from that brand. Compare the model number with the product’s compatibility list, and check your owner’s manual or existing filter for a part number when possible.
Measure the Existing Filter
For replacement filters, compare the listed dimensions with the filter you are removing. The HEBRAR and Giokyi GE options are both close to 13 x 7.5 inches, but their stated measurements are not identical. If your original filter has a frame, tabs, or a particular shape, size alone may not confirm compatibility.
Choose Between a Direct Replacement and a Cut-to-Fit Sheet
A model-specific filter is usually the more straightforward route when your unit appears on the compatibility list. A cut-to-fit sheet, such as the Wintcomfort, offers more flexibility but requires accurate measuring and trimming. Make sure a trimmed filter can sit securely in the intended opening without blocking airflow.
Check Material and Care Instructions
Filter material and cleaning directions vary. The HEBRAR listing identifies fiberglass and gives washing instructions; the Giokyi listing does not provide detailed care directions. The Wintcomfort is described as non-woven polyester, while the Frigidaire listing focuses on compatible models and replacement timing. Follow the instructions for the filter and air conditioner rather than assuming all filters can be washed or reused.
Use Replacement Timing as a Guide
The Frigidaire listing recommends replacing its filter every three months, or more often as needed. Other product descriptions advise regular checking but do not give the same interval. Dust, pets, and how often you run the unit can affect how quickly a filter needs attention, so check it regularly and follow your air conditioner’s manual.
Keep Filtration Claims in Perspective
These products are presented as window air conditioner filters for catching common particles, but the supplied information does not list standardized filtration ratings. If you need a specific level of particle filtration, look for a clearly stated rating and confirm that the filter is approved for your unit. A window AC filter is not automatically a replacement for a separate air purifier.
Frequently Asked Questions
How do I know which window air conditioner filter to buy?
Find your air conditioner’s model number and compare it with the filter’s compatibility list. Also check the part number and dimensions of your current filter. Do not rely on brand alone, since filters can differ between models from the same manufacturer.
Can I use a cut-to-fit filter in any window AC?
Not necessarily. A cut-to-fit sheet can work only if it can be trimmed to the right shape and secured in your unit without blocking airflow or interfering with the filter frame. Check your owner’s manual before using a non-model-specific filter.
Are the two GE WJ85X21746 filters interchangeable?
Both listings identify WJ85X21746 as the part number and give nearly matching dimensions, but you should still compare your unit’s model number and original filter before ordering. A similar size does not guarantee that every detail of the fit will match.
Can I wash a window air conditioner filter?
Care depends on the filter. The HEBRAR listing says to wash its filter with warm, soapy water, rinse it, and let it dry before reinstalling. The other listings do not all provide the same care directions. Check the product instructions and your air conditioner manual before washing a filter.
How often should I replace a window AC filter?
Follow the guidance for your particular filter and air conditioner. The Frigidaire listing recommends replacing its filter every three months, or more often as needed. Other filters may have different care instructions, so inspect them regularly and use the manual as your main reference.
Do window AC filters remove pet dander and pollen?
Several listings describe their filters as capturing particles such as pet dander, pollen, dust, or pet hair. The supplied product information does not provide standardized filtration ratings, so it does not establish a specific level of removal.
Final Recommendation
For a compatible GE window air conditioner, start by matching your current filter’s part number and dimensions to the HEBRAR or Giokyi WJ85X21746. Choose the Frigidaire FRPARAC11 for one of its four listed models. If your unit needs a custom size and you can trim a sheet accurately, Wintcomfort is the most flexible option. In every case, model compatibility and a secure, unobstructed fit should guide your choice.
