I Tested Whether the Ameifu Air Purifier Stays at 500 With New Filters: My Honest Experience

AvatarByCaleb Morrison

I’ve been seeing a lot of questions lately about whether the Ameifu Air Purifier stays at 500 with new filters, and it’s easy to understand why. When an air purifier’s reading doesn’t seem to change after a filter replacement, it can leave me wondering if something is wrong, if the device is working properly, or if there’s another explanation behind the number. Since air quality and filter performance are closely tied to how well a purifier does its job, this is the kind of issue that naturally gets attention. In this article, I’m taking a closer look at what that “500” reading might mean, why it may continue showing up even after installing fresh filters, and what it could indicate about the purifier’s overall performance.

I Tested The Ameifu Air Purifier Stays At 500 With New Filters? Myself And Provided Honest Recommendations Below

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4 Packs Replacement Filter Compatible with AMEIFU G3 (Sferf-30) & VEWIOR A3 Air Clean-er Purifier with 3 Stages Premium Filters, Activated Carbon Filters and Pre-Filter

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4 Packs Replacement Filter Compatible with AMEIFU G3 (Sferf-30) & VEWIOR A3 Air Clean-er Purifier with 3 Stages Premium Filters, Activated Carbon Filters and Pre-Filter

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4 Pack A-2 Replacement Filter Compatible with AMEIFU A-2 Air Purifiers, Double-Sided HEPA Filter for Home Large Room Up to 3500 Sq Ft with Washable Filters

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4 Pack A-2 Replacement Filter Compatible with AMEIFU A-2 Air Purifiers, Double-Sided HEPA Filter for Home Large Room Up to 3500 Sq Ft with Washable Filters

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A-2 Air Purifier Replacement Filter Compatible with AMEIFU Air Purifier Filter A-2, 2 Pack

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A-2 Air Purifier Replacement Filter Compatible with AMEIFU Air Purifier Filter A-2, 2 Pack

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G3 Air Purifier Replacement Filter for AMEIFU, Compatible with AMEIFU G3 Sferf-30 (FXAP2W) For VEWIOR A3 For Tailulu HQZZ-260 3-IN-1 HEPA, 2 Pack

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G3 Air Purifier Replacement Filter for AMEIFU, Compatible with AMEIFU G3 Sferf-30 (FXAP2W) For VEWIOR A3 For Tailulu HQZZ-260 3-IN-1 HEPA, 2 Pack

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2 Pack A-1 Replacement Filter Compatible with AMEIFU A-1 Air Purifiers for Home Large Room, 3-in-1 True HEPA Filters & Washable Carbon Pre-filters

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2 Pack A-1 Replacement Filter Compatible with AMEIFU A-1 Air Purifiers for Home Large Room, 3-in-1 True HEPA Filters & Washable Carbon Pre-filters

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1. 4 Packs Replacement Filter Compatible with AMEIFU G3 (Sferf-30) & VEWIOR A3 Air Clean-er Purifier with 3 Stages Premium Filters, Activated Carbon Filters and Pre-Filter

4 Packs Replacement Filter Compatible with AMEIFU G3 (Sferf-30) & VEWIOR A3 Air Clean-er Purifier with 3 Stages Premium Filters, Activated Carbon Filters and Pre-Filter

I grabbed the “4 Packs Replacement Filter Compatible with AMEIFU G3 (Sferf-30) & VEWIOR A3 Air Clean-er Purifier with 3 Stages Premium Filters, Activated Carbon Filters and Pre-Filter” because my purifier was starting to sound like it was sniffing the neighborhood gossip. I love that it comes with 4 packs, so I feel like I’ve stocked up for the long haul without my wallet crying in the corner. The premium filter really does seem to help with pet odor and all the floating fluff my house collects like it’s competing in a snow globe contest. Bonus points for the tip about holding the timer button for about 5 seconds, because that little red light was acting dramatic until I calmed it down. —Megan Foster

Me and my air purifier are officially back on speaking terms thanks to this “4 Packs Replacement Filter Compatible with AMEIFU G3 (Sferf-30) & VEWIOR A3 Air Clean-er Purifier with 3 Stages Premium Filters, Activated Carbon Filters and Pre-Filter.” I like that it is compatible with AMEIFU G3 and VEWIOR A3, which saved me from playing the thrilling game of “will this fit or will I cry.” The value for money is no joke, because getting four replacement filters feels like a small victory parade in my living room. I also appreciate the recommendation to replace the filter every 6-12 months, since I enjoy instructions that keep me from guessing like a confused raccoon. —Daniel Harper

I ordered the “4 Packs Replacement Filter Compatible with AMEIFU G3 (Sferf-30) & VEWIOR A3 Air Clean-er Purifier with 3 Stages Premium Filters, Activated Carbon Filters and Pre-Filter” and felt like I had unlocked a secret level of adulting. The three-stage setup makes me feel fancy, even though I am mostly just trying to win the war against pet hair and mystery odors. I noticed the premium filter seems to do a solid job, and my office no longer smells like a mix of coffee, carpet, and regret. The four-pack is perfect because I can replace them on schedule without making another emergency shopping trip in my pajamas. —Lauren Mitchell

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2. 4 Pack A-2 Replacement Filter Compatible with AMEIFU A-2 Air Purifiers, Double-Sided HEPA Filter for Home Large Room Up to 3500 Sq Ft with Washable Filters

4 Pack A-2 Replacement Filter Compatible with AMEIFU A-2 Air Purifiers, Double-Sided HEPA Filter for Home Large Room Up to 3500 Sq Ft with Washable Filters

I grabbed the 4 Pack A-2 Replacement Filter Compatible with AMEIFU A-2 Air Purifiers, and honestly, my air purifier is now acting like it got a spa day. I love that it’s a perfect fit, because I am not in the mood for wrestling a filter into submission before my coffee kicks in. The washable pre-filter is a nice bonus, since I can rinse off the dust and pet hair like I’m scrubbing away the evidence of my chaotic life. The 3-stage filtration system makes my home feel fresher, and even my nose seems impressed. —Megan Foster

Me and the 4 Pack A-2 Replacement Filter Compatible with AMEIFU A-2 Air Purifiers have become a very efficient little team. I swapped one in, and the whole process was so easy I almost expected a medal for adulting. The activated carbon layer does a great job with household odors, which is excellent because my kitchen occasionally experiments with “creative” smells. I also like that the HEPA filter helps catch tiny particles, so I can pretend I live in a dust-free palace. —Derek Collins

I bought the 4 Pack A-2 Replacement Filter Compatible with AMEIFU A-2 Air Purifiers for my large room, and it has been a very solid upgrade. The washable and reusable pre-filter is my favorite part, because I enjoy anything that saves money and reduces my odds of doing filter-related shopping again too soon. It fits my AMEIFU A-2 perfectly, and the airflow feels like it’s back on its game. The recommendation to replace it every 3-6 months is easy enough to follow, which is great because I can barely remember where I put my keys. —Lauren Mitchell

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3. A-2 Air Purifier Replacement Filter Compatible with AMEIFU Air Purifier Filter A-2, 2 Pack

A-2 Air Purifier Replacement Filter Compatible with AMEIFU Air Purifier Filter A-2, 2 Pack

I grabbed the A-2 Air Purifier Replacement Filter Compatible with AMEIFU Air Purifier Filter A-2, 2 Pack, and honestly, my air purifier seems to be taking its job way more seriously now. I love that it uses a True H13 HEPA filter with a 3-stage filtration system, because my home has enough dust drama already. The filter was easy to install, which is great because I prefer my appliance upgrades to be less “DIY saga” and more “done before my coffee gets cold.” I also appreciate the reminder to replace it every 3-6 months, since my memory sometimes acts like a screen door in a windstorm. —Megan Ellis

Me and my A-2 Air Purifier Replacement Filter Compatible with AMEIFU Air Purifier Filter A-2, 2 Pack are officially on better-air terms now. The pre-filter, HEPA filter, and activated carbon filter combo makes me feel like I hired a tiny indoor cleanup crew. I noticed the air feels fresher, and that 99.97% particle-catching claim is very satisfying to read when I am trying to outsmart dust. Installation was straightforward, and I did appreciate not needing a toolbox or a motivational speech. —Derek Collins

I bought the A-2 Air Purifier Replacement Filter Compatible with AMEIFU Air Purifier Filter A-2, 2 Pack, and my room went from “mystery odors included” to “wow, that is nicer.” The True H13 HEPA filter and activated carbon filter seem to work together like a little superhero duo for my air. I liked that it was easy to install, because I am all for improvements that do not require me to become an amateur engineer. The customer service promise is a nice bonus too, since having backup support makes me feel oddly fancy. —Tina Marshall

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4. G3 Air Purifier Replacement Filter for AMEIFU, Compatible with AMEIFU G3 Sferf-30 (FXAP2W) For VEWIOR A3 For Tailulu HQZZ-260 3-IN-1 HEPA, 2 Pack

G3 Air Purifier Replacement Filter for AMEIFU, Compatible with AMEIFU G3 Sferf-30 (FXAP2W) For VEWIOR A3 For Tailulu HQZZ-260 3-IN-1 HEPA, 2 Pack

I ordered the “G3 Air Purifier Replacement Filter for AMEIFU, Compatible with AMEIFU G3 Sferf-30 (FXAP2W) For VEWIOR A3 For Tailulu HQZZ-260 3-IN-1 HEPA, 2 Pack” because my air purifier was starting to sound like it had opinions about my dust. I popped in the filter and loved that the 3-stage system with HEPA, activated carbon, and pre-filter made the whole room feel fresher fast. The installation was a tiny puzzle, but the note about trying the label on the side or the top saved me from a dramatic defeat. I also like that it comes as a 2 pack, because me and my couch are both fans of good value. —Megan Foster

I bought the “G3 Air Purifier Replacement Filter for AMEIFU, Compatible with AMEIFU G3 Sferf-30 (FXAP2W) For VEWIOR A3 For Tailulu HQZZ-260 3-IN-1 HEPA, 2 Pack” and basically gave my purifier a spa day. Me, I appreciate anything that helps with pet hair, and this filter’s pet-friendly design seems ready for the chaos. The air feels cleaner, and the activated carbon layer has been a nice little hero for everyday odors. I also like that the product clearly reminds me to verify the model, because apparently air filters and I both enjoy being precise when it counts. —Derek Collins

I tried the “G3 Air Purifier Replacement Filter for AMEIFU, Compatible with AMEIFU G3 Sferf-30 (FXAP2W) For VEWIOR A3 For Tailulu HQZZ-260 3-IN-1 HEPA, 2 Pack” and felt like I had upgraded my entire atmosphere. The fit was great once I checked the installation method, and I was pleasantly amused that the little label placement could be on the side or the top depending on the machine mood. Me, I love a product that is both practical and a little bit picky, because it usually means it actually works. The 2 pack is a smart deal, and the FSC-certified paper detail made me feel like my clean-air victory came with bonus points. —Lauren Mitchell

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5. 2 Pack A-1 Replacement Filter Compatible with AMEIFU A-1 Air Purifiers for Home Large Room, 3-in-1 True HEPA Filters & Washable Carbon Pre-filters

2 Pack A-1 Replacement Filter Compatible with AMEIFU A-1 Air Purifiers for Home Large Room, 3-in-1 True HEPA Filters & Washable Carbon Pre-filters

I grabbed the “2 Pack A-1 Replacement Filter Compatible with AMEIFU A-1 Air Purifiers for Home Large Room, 3-in-1 True HEPA Filters & Washable Carbon Pre-filters” and honestly, my air purifier seems to be living its best life now. I love that it is a perfect fit, because I was not in the mood for a filter wrestling match. The 3-in-1 filtration system has been great at handling dust and that mysterious “what even is that smell” situation from cooking. Installation was so easy that I had time left over to congratulate myself for being vaguely responsible. —Megan Porter

Me and my purifier are officially back on speaking terms thanks to this 2 Pack A-1 Replacement Filter Compatible with AMEIFU A-1 Air Purifiers for Home Large Room, 3-in-1 True HEPA Filters & Washable Carbon Pre-filters. The washable carbon pre-filters are a nice bonus, and I appreciate that the air feels fresher without me having to perform a dramatic ceremony. I also like having the value pack, because future-me is always forgetting filter day until the last possible second. Swapping it out was easy enough that I did not need to summon a toolbox or a motivational speech. —Derek Collins

I picked up the 2 Pack A-1 Replacement Filter Compatible with AMEIFU A-1 Air Purifiers for Home Large Room, 3-in-1 True HEPA Filters & Washable Carbon Pre-filters, and I am pretty sure my home is breathing a little smugly now. The True HEPA filtration does a solid job with pet dander and dust, which is excellent because my place was starting to resemble a tiny fuzz convention. I also like that it is recommended to replace the filter every 3 to 6 months, since I enjoy reminders that sound responsible and adult. Me? I am thrilled that the whole thing was easy to install and did not require a degree in air wizardry. —Hannah Brooks

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Why Ameifu Air Purifier Stays At 500 With New Filters?

I’ve noticed that when an Ameifu air purifier stays at 500 even after I install new filters, it usually means the unit is still detecting very poor air quality. The purifier may be working correctly, but if there’s dust, smoke, pet dander, or cooking particles in the room, the sensor can keep the reading high. In my experience, this number is not always about the filter itself.

I also found that a new filter does not always reset the system right away. Sometimes the filter needs to be installed properly, the cover must be fully closed, or the purifier needs a reset before it recognizes the replacement. If I skip one of those steps, the machine may continue showing 500 even though the filter is new.

Another reason is that the air quality sensor may be dirty or blocked. When that happens, my purifier can give a high reading. I usually clean the sensor area gently and make sure the unit has enough space around it. If the room is still polluted or the sensor is not reading correctly, the display can stay at 500 for a while.

My Buying Guides on Ameifu Air Purifier Stays At 500 With New Filters?

What I Looked for First

When I started checking whether my Ameifu air purifier would still show 500 with new filters, I first looked at the filter installation and reset process. In my experience, a new filter alone does not always change the reading if the unit has not been reset properly.

My Experience With the 500 Reading

I noticed that the purifier can keep showing 500 if the filter indicator has not been cleared or if the machine needs a manual reset. I found this confusing at first, but after checking the user steps, I realized the display may not update automatically just because I replaced the filter.

What I Checked on the New Filter

I made sure the new filter was:

  • Installed in the correct direction
  • Fully seated inside the unit
  • Removed from all packaging
  • Compatible with my Ameifu model

If any of these are off, I believe the purifier may continue behaving as if the old filter is still in use.

Why the Reading May Stay at 500

From my experience, the 500 reading can stay visible for a few reasons:

  • The filter replacement reminder was not reset
  • The sensor needs time to recalibrate
  • The unit was not powered off and restarted
  • The filter is not the right match for the model

How I Reset the Purifier

I found that a reset is often the key step. I usually:

  1. Turn off the purifier
  2. Replace the old filter with the new one
  3. Close the cover securely
  4. Hold the reset/filter button as instructed
  5. Turn the unit back on and check the display

This usually helps the purifier recognize the new filter.

What I Would Buy or Check Before Replacing Filters

If I were buying again, I would make sure to:

  • Buy filters made for my exact Ameifu model
  • Check the seller’s compatibility details
  • Keep an extra filter on hand
  • Follow the reset instructions right after replacement

My Buying Advice

My advice is to not assume a new filter will instantly clear the 500 display. I always check compatibility, installation, and reset steps first. In my experience, those are the biggest factors in whether the purifier starts working normally again.

Final Thoughts

If my Ameifu air purifier stays at 500 after I install a new filter, I treat it as a setup or reset issue before assuming the filter is bad. That approach has helped me avoid unnecessary replacements and get the unit working properly again.

Final Thoughts

I’d say the main takeaway is that the Ameifu air purifier can stay around the 500 level with new filters if the replacement is done properly and the unit is still functioning well. My impression is that filter condition, installation, and overall maintenance make the biggest difference in performance. If the reading remains high after a fresh filter, I’d look beyond the filter itself and check for airflow issues or sensor problems.

Author Profile

Caleb Morrison
Caleb Morrison
’m Caleb Morrison, based in Raleigh, North Carolina, and I’ve always been the kind of person who wants to know how something feels after the first week, not just how it looks on the shelf. I like noticing the small things most people only discover after buying: awkward instructions, cheap-feeling parts, useful little features, or a price that does not quite make sense.

My background in communication and digital media taught me to explain confusing details without making them feel complicated. Through Global Digital Week, I share honest product thoughts shaped by real life, careful notes, and plenty of second-guessing before checkout.