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<div class="bvseo-question-answer" data-questionid="5538218">
<h2 class="bvseo-question">
Does this unit give off ozone. I ask because I have asthma and was told the ozone emitting units are bad for you.
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<div class="bvseo-author">Asked by: Asthma</div>
<div class="bvseo-answer" data-answerid="7539475">
Hi! Thank you for choosing Holmes&reg;️. We are more than happy to assist you with your concern. This air purifier releases ozone only when the ionizer is on. Some Air Purifiers have an independently controlled ionizer, which, when turned on, releases negative ions into outgoing filtered air. Ions are tiny particles that carry a positive or negative charge. These ions exist naturally around us, in the air, water and ground. Both positive and negative ions are colorless, odorless and completely harmless. Negative ions help the air purification process by attaching themselves to very small airborne particles in the room. If the ionizer is off, the ozone and negative ions aren't produced. We hope this information helps. Have a wonderful day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2023-08-08</div>
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<div class="bvseo-question-answer" data-questionid="7676329">
<h2 class="bvseo-question">
My blue ionizer light quit working and I can&rsquo;t remember which way the rocker button needs to be pushed to turn on.
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<div class="bvseo-author">Asked by: Vonnie Vonnie</div>
<div class="bvseo-answer" data-answerid="7537996">
Hi Vonnie Vonnie! Thank you for Holmes&reg;️. We apologize to hear that your ionizer light quit working, we are more than happy to assist you with your concern. The ionizer for air purifier unit HAP9415-UAH-2 will be turned on when pressed on the right side, and turns off on left side. If you need further assistance, please don't hesitate to reach out to us by visiting the Contact Us page of this website. We're here for you Monday to Friday from 9:00 am till 5:00 pm EST. Our product specialists will be more than happy to help you. Have a wonderful day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2024-07-22</div>
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<div class="bvseo-question-answer" data-questionid="7854274">
<h2 class="bvseo-question">
Where is the viewing window located?
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<div class="bvseo-author">Asked by: LiSammy 723</div>
<div class="bvseo-answer" data-answerid="7537082">
Hi LiSammy 723! Thank you for choosing Holmes&reg;️. We are more than happy to assist you with your concern. The filter viewing window of the air purifier model HAP9423-UAH-2 is located at the upper front part of the unit, and has a circular shape. Visipure filter viewing window allows you to see particles accumulate, helping remind you to replace your filter. We hope this information helps. Have a good one!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2023-08-08</div>
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<div class="bvseo-question-answer" data-questionid="7750624">
<h2 class="bvseo-question">
I have a Holmes HAP9423uAH with 2 filters. Can I use 2 different color filters at the same time since they do different functions.
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<div class="bvseo-author">Asked by: Sandra dee</div>
<div class="bvseo-answer" data-answerid="7535873">
Hi Sandra dee! Thank you for choosing Holmes&reg;️. We are more than happy to assist you with your concern. Yes, you may use two (2) different aer1 filters in operating your air purifier. We hope that we were able to help you out. Have a wonderful day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-07-12</div>
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<div class="bvseo-question-answer" data-questionid="5544642">
<h2 class="bvseo-question">
What micron is this one?&nbsp;
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<div class="bvseo-author">Asked by: Jamiesunshine</div>
<div class="bvseo-answer" data-answerid="7535659">
Hi Jamiesunshine! Thank you for choosing Holmes&reg;️. We hope you are staying healthy and safe. We understand that you want to know what micron is the air purifier model HAP9423. We are more than happy to assist. Upon checking, the air purifier is efficient in removing airborne allergens as small as 0.3 microns from air passing through the filter. I hope this information. helps. Have a nice day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-07-12</div>
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<div class="bvseo-question-answer" data-questionid="5571431">
<h2 class="bvseo-question">
What are the CADR ratings for this unit? Thank you
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<div class="bvseo-author">Asked by: DVA78</div>
<div class="bvseo-answer" data-answerid="7535596">
Hi DVA78! Thank you for choosing Holmes&reg;️. We hope you are staying healthy and safe. We understand that you want to know the CADR rating of air purifier model HAP9423-UAH-2. We are more than happy to assist. Upon checking, the air purifier provides a 124 CADR (Clean Air Delivery Rate) I hope this information. helps. Have a nice day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-07-12</div>
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<div class="bvseo-question-answer" data-questionid="5580194">
<h2 class="bvseo-question">
This isn't probably a stupid question but I can't find anything on it. The unit I bought says it comes with two filters. Are both used or is one a spare? If I need replacements do I buy one or two?&nbsp;
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<div class="bvseo-author">Asked by: Brie</div>
<div class="bvseo-answer" data-answerid="7534294">
Hi Brie! Thank you for choosing Holmes&reg;️. We are more than happy to assist you with your concern. Your air purifier comes with two (2) filters inside of the unit, which is what you're currently using. This unit requires two filters to use. We hope that we were able to help you. Have a wonderful day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-07-11</div>
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<div class="bvseo-question-answer" data-questionid="5554538">
<h2 class="bvseo-question">
what type of air filter do I need for this unit
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<div class="bvseo-author">Asked by: bmcmahan</div>
<div class="bvseo-answer" data-answerid="7534026">
Hi bmcmahan! Thank you for choosing Holmes&reg;️. We are more than happy to assist you with your concern. The compatible filter for this air purifier unit is called the HAPF30 aer1 HEPA filter, this filter has five (5) different types. To know the right filter for you, please visit our website and on the 'Tips and Blog' category you may access the 'Which aer1 Air Filter is Right for my Air Purifier?' article. We hope that we were able to help you. Have a wonderful day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-07-11</div>
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<div class="bvseo-question-answer" data-questionid="5525452">
<h2 class="bvseo-question">
How do you know when to change the filter?
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<div class="bvseo-author">Asked by: Italian Bull 66</div>
<div class="bvseo-answer" data-answerid="7533919">
Hi Italian Bull 66! Thank you for choosing Holmes&reg;️. We are more than happy to assist you with your concern. This air purifier has a filter viewing window which allows you to see particles accumulate, helping remind you to replace your filter, and a filter reminder dial that allows you to track filter life and remind you when a replacement filter is needed. We hope that we were able to help you. Have a wonderful day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-07-11</div>
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<div class="bvseo-question-answer" data-questionid="5786125">
<h2 class="bvseo-question">
What is the blue switch on top for
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<div class="bvseo-author">Asked by: softballmom</div>
<div class="bvseo-answer" data-answerid="7533909">
Hi softballmom! Thank you for choosing Holmes&reg;️. We hope you are staying healthy and safe. We understand that you want to know what is the blue switch on top for. We are more than happy to assist. Upon checking, the blue switch is for Ionizer (This appliance has an optional ionizer feature which, when turned on, releases negative ions into outgoing filtered air to help the air purification process). I hope this information helps. Have a nice day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-07-11</div>
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<div class="bvseo-question-answer" data-questionid="5523039">
<h2 class="bvseo-question">
I have had my purifier for a couple of years. Recently it started making this high pitched whistling sound-? Any suggestions?
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<div class="bvseo-author">Asked by: AE343</div>
<div class="bvseo-answer" data-answerid="7533795">
Hi AE343! Thank you for contacting Holmes&reg;️. We are saddened to know that your air purifier makes a weird noise. Clearly, this is not the situation that we want you to experience. We want you to know that getting to the bottom of this is just as important to us, as it is to you. Kindly check for any obstruction or loose screws. Kindly make sure as well that the parts are firmly positioned in place and the unit should be at least 1 foot away from the wall or objects. You may also try repositioning your filters or changing them. If the air purifier will still be noisy, please reach out to us through the Contact Us page of this website so that we can check the warranty of your unit. Have a nice day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-07-11</div>
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<div class="bvseo-question-answer" data-questionid="5763740">
<h2 class="bvseo-question">
I have one and lost the manual just need to know basic directions.
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<div class="bvseo-author">Asked by: MYGIGI</div>
<div class="bvseo-answer" data-answerid="7530944">
Hi MYGIGI! Thank you for choosing Holmes&reg;️. We're sorry to hear that the manual is missing and we understand that you have a basic inquiry with your product. We are more than happy to assist. Please reach out to us through the Contact Us page on our website so that we can further assist you with your questions. Have a nice day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-07-08</div>
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<div class="bvseo-question-answer" data-questionid="7649280">
<h2 class="bvseo-question">
Also, many that say HAP9422 and HAP9424 also use HAPF300AH-U4R or others. Is the HAP9423 just exclusive? Will any other filters work with the HAP9423? Thank you
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<div class="bvseo-author">Asked by: Chedawn</div>
<div class="bvseo-answer" data-answerid="7529896">
Hi Chedawn! Thank you for choosing Holmes&reg;️. We are more than happy to assist you with your concern. HAP9423 air purifier uses the same filter like the other models you mentioned, which are the Holmes&reg;️ AER1 HEPA type filters. We hope this information helps. Have a good one!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-07-07</div>
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<div class="bvseo-question-answer" data-questionid="7649272">
<h2 class="bvseo-question">
Having my HOLMES HAP9423 for many years now but only used it for about 6 months. It needed the filters changed and I never looked for more. I want to begin using it again but finding HAP9423 is difficult Plenty of 9422 &amp; 9424. Are they compatible?
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<div class="bvseo-author">Asked by: Chedawn</div>
<div class="bvseo-answer" data-answerid="7529860">
Hi Chedawn! Thank you for choosing Holmes&reg;️. We are more than happy to assist you with your concern. The filter you may need is called the Holmes&reg;️ AER1 HEPA filters. There are five (5) different types of this filter which are the; Total dust eliminator, Allergen remover, Smoke grabber, Odor grabber, and Performance plus. You may purchase these filters on our partner retailers Amazon, Walmart, Target, etc. You may find it online by searching &quot;Holmes AER1 filter&quot; on your internet browser, and it may also be available on physical stores mentioned. We hope this information helps. Have a good one!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2024-09-03</div>
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<div class="bvseo-question-answer" data-questionid="8300219">
<h2 class="bvseo-question">
I recently purchased one of these and the ionizer (blue botton) does not illuminate&hellip; which way is off for the ionizer???&nbsp;
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<div class="bvseo-author">Asked by: Smamsmsm</div>
<div class="bvseo-answer" data-answerid="7482374">
Hello there, Smamsmsm! Thank you for contacting Holmes&reg;️. To run the ionizer, you need to press the ionizer button to the right. When turned on, the light indicator should illuminate yellow/blue light. Your ionizer may produce an occasional popping or cracking sound. We hope this information helps. If the ionizer does not work, please reach out to us by visiting the Contact Us page of this website. We're here for you Monday to Friday from 10:00 am till 5:00 pm EST. Our product specialists will be more than happy to help you. Please stay safe and healthy!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-06-01</div>
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<div class="bvseo-question-answer" data-questionid="7938955">
<h2 class="bvseo-question">
I just bought one at thrift store. Worked for a few minutes the stopped. Is a fix for it?
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<div class="bvseo-author">Asked by: Femail7c</div>
<div class="bvseo-answer" data-answerid="7453037">
Hi Femail7c! Thank you for reaching out to Holmes&reg;️. We are saddened to hear that your air purifier has stopped working. Obviously, this is not the situation that we want for you. We are more than happy to help you in fixing this. Please check for any obstruction and loose screws. The parts should be firmly positioned in place. Please also check if the filter needs to be changed. Please make sure to change your filters if needed. If you have further questions we're here for you Monday to Friday from 9:00 am till 5:00 pm EST. Our product specialists will be more than happy to help you. Please stay safe and healthy! Have a nice day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-05-10</div>
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<div class="bvseo-question-answer" data-questionid="8241853">
<h2 class="bvseo-question">
I was wondering when the ionizer is on does it emit ozone?
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<div class="bvseo-author">Asked by: Ashpaige</div>
<div class="bvseo-answer" data-answerid="7442215">
Hi Ashpaige! Thank you for reaching Holmes&reg;️. We are more than happy to help you with this concern. Yes, the ionizer does emit ozone only when it's activated. Some Air Purifiers have an independently controlled ionizer, which, when turned on, releases negative ions into outgoing filtered air. Ions are tiny particles that carry a positive or negative charge. These ions exist naturally around us, in the air, water and ground. Both positive and negative ions are colorless, odorless and completely harmless. Negative ions help the air purification process by attaching themselves to very small airborne particles in the room. Stay safe and have a great day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-05-03</div>
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<div class="bvseo-question-answer" data-questionid="7887204">
<h2 class="bvseo-question">
My unit is squeaking badly and the blue light doesn&rsquo;t work anymore.&nbsp;
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<div class="bvseo-author">Asked by: Lisa Mnk</div>
<div class="bvseo-answer" data-answerid="7432600">
Hi Lisa Mnk! Thank you for reaching out to Holmes&reg;️. We are saddened to hear that your air purifier has started making a noise and no longer illuminating. Obviously, this is not the situation that we want for you. We are more than happy to help you in fixing this. Please check for any obstruction and loose screws. Kindly make sure as well that it is placed on a flat surface and the air outlet is at least 1 foot away from the wall or objects. The parts should be firmly positioned in place. With regard to the limp, this could be the sediments that were filtered. Please make sure to change your filters. If this will still be the same, please directly contact Holmes&reg;️ so that we can gather the details of your air purifier even if it is already out of the warranty. Have a nice day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-07-29</div>
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<div class="bvseo-question-answer" data-questionid="7840625">
<h2 class="bvseo-question">
ionizer safe around cats?
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<div class="bvseo-author">Asked by: rustle</div>
<div class="bvseo-answer" data-answerid="7432258">
Hi rustle! Thank you for contacting Holmes&reg;. We understand that you want to about your air purifier's ionizer. We are more than happy to help you. Yes, the ionizer is safe around cats. It would not be safe around small animals such as birds. Stay safe and have a great day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-04-26</div>
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<div class="bvseo-question-answer" data-questionid="7894002">
<h2 class="bvseo-question">
Is it safe to use the ionizer with pets?
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<div class="bvseo-author">Asked by: Christi</div>
<div class="bvseo-answer" data-answerid="7416804">
Hi Christi! Thank you for contacting Holmes&reg;️. We understand that you want to know if the air purifier's ionizer feature is safe to use around pets. We are happy to answer this for you. Upon verifying, yes, ionizer feature is safe to use around pets like cats, dogs, and more except for smaller ones such as birds, and hamsters. Stay safe and have a great day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-04-15</div>
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<div class="bvseo-question-answer" data-questionid="7907272">
<h2 class="bvseo-question">
Which air filters work with this model?&nbsp;
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<div class="bvseo-author">Asked by: felteyk</div>
<div class="bvseo-answer" data-answerid="7416731">
Hi felteyk! Thank you for contacting Holmes&reg;️. We understand that you want to know which filter works with the air purifier model HAP9423-UAH-2. This air purifier is compatible with all AER1 filters. To know which filter best suits your need, you may visit our website's tips and blog, and find &quot;Which aer1 Air Filter Is Right for My Air Purifier?&quot; The AER1 filters are available on our partner retailers: Amazon, Target, and Walmart. Stay safe and have a great day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-04-15</div>
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<div class="bvseo-question-answer" data-questionid="7977304">
<h2 class="bvseo-question">
What does the ionizer look like? I bought this one at target. It was the last one. Maybe something is missing from the box???
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<div class="bvseo-author">Asked by: Joliefan75</div>
<div class="bvseo-answer" data-answerid="7415449">
Hi Joliefan75! Thank you for choosing Holmes. The ionizer is a button that sits on one of the controls (ion logo). The ionizer is not a separate part. It is an optional feature that will not work unless activated. The ionizer releases negative ions into outgoing filtered air to help the air purification process. We hope this information helps. Have a great day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-04-14</div>
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<div class="bvseo-question-answer" data-questionid="8146301">
<h2 class="bvseo-question">
how long should one keep the unit running ,all day all night or a number of hours
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<div class="bvseo-author">Asked by: gene auytry</div>
<div class="bvseo-answer" data-answerid="7415155">
Hi Gene! Thank you for reaching Holmes. Your air purifier can be operated 24/7, but we also encourage that you allow this unit at least 30 minutes to 1 hour rest. Thank you and have a good one!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2022-04-14</div>
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<div class="bvseo-question-answer" data-questionid="7910456">
<h2 class="bvseo-question">
I took the mesh backing off the front piece because it was covered in dust. Is that bad or does it effect its efficiency at all?
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<div class="bvseo-author">Asked by: allien</div>
<div class="bvseo-answer" data-answerid="7266749">
That was the foam pre-filter. It isn&rsquo;t needed, but most customers like it because it catches the larger particles. It can be vacuumed and even washed with soap and water and should last the life of the air purifier.
<div class="bvseo-author">Answered by: LoriKT</div>
<div class="bvseo-pubdate">Date published: 2022-01-20</div>
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<div class="bvseo-question-answer" data-questionid="5555946">
<h2 class="bvseo-question">
HAP9423, The foam piece behind the door (pre-filter) is damaged and needs to be replaced. Can you tell me the item number please?
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<div class="bvseo-author">Asked by: RobinR</div>
<div class="bvseo-answer" data-answerid="7180336">
I asked them your same question at their 800 number. customer service says they don't offer that part. Only to wash it. They don't make that replacement part. :(
<div class="bvseo-author">Answered by: Joliefan75</div>
<div class="bvseo-pubdate">Date published: 2021-12-18</div>
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<div class="bvseo-question-answer" data-questionid="7622250">
<h2 class="bvseo-question">
my ionizer switch only lights up on high fan speed
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<div class="bvseo-author">Asked by: johnnycat</div>
<div class="bvseo-answer" data-answerid="6835448">
Hi johnnycat! Thank you for choosing Holmes. We&rsquo;re sorry to hear about what happened to your air purifier. We would like to check the warranty of the unit for you. For further assistance, please reach out to us at our toll-free number 1-800-546-5637. For your convenience, our Consumer Care Team is available Mon-Fri 9 am-5 pm, EST. You can also email us at
[email protected].
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2021-07-19</div>
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<div class="bvseo-question-answer" data-questionid="7532850">
<h2 class="bvseo-question">
I can&rsquo;t find my manual and am not sure what number setting to use! Thank you!
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<div class="bvseo-author">Asked by: JLee</div>
<div class="bvseo-answer" data-answerid="6761574">
Hi there, JLee! Thank you for choosing Holmes&reg;. We hope you are healthy and staying safe. You may select the desired operating speed; High (3), Medium (2), Low (1), by turning Speed Control Switch to the appropriate setting. For optimum air filtration, it is recommended to operate the air purifier continuously. Its rugged motor has been designed to give many years of use. If you like to obtain a copy of the user manual for your air purifier, please send us a message by visiting the Contact US page of this website. Our product specialists will be more than happy to help you.
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2021-08-14</div>
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<div class="bvseo-question-answer" data-questionid="5848098">
<h2 class="bvseo-question">
HAP9423. What does the blue button at the top of the unit do?? Mine activated just by switching to number 1,2 or 3 but it has no manual or indication of what the blue neutron looking button does
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<div class="bvseo-author">Asked by: Graham P</div>
<div class="bvseo-answer" data-answerid="6750812">
Hello there! Thank you for choosing Holmes. We will be more than happy to answer your question. The button is for the optional ionizer.
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2021-12-28</div>
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<div class="bvseo-question-answer" data-questionid="5860290">
<h2 class="bvseo-question">
Is this a save energy product?
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<div class="bvseo-question-detail">
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<div class="bvseo-author">Asked by: Bianca</div>
<div class="bvseo-answer" data-answerid="6750465">
Hello there! Thank you for choosing Holmes. We will be more than happy to answer your question. Our products are energy star rated. Thank you so much and have a nice day!
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2021-06-11</div>
</div>
</div>
<div class="bvseo-question-answer" data-questionid="5914469">
<h2 class="bvseo-question">
How long do you recommend to run my purifier for? 24/7 or just a couple of hours a day?
</h2>
<div class="bvseo-question-detail">
</div>
<div class="bvseo-author">Asked by: Boomhauer</div>
<div class="bvseo-answer" data-answerid="6740120">
Hi there! Thank you for choosing Holmes. We will be more than happy to answer your question. We recommend running the air purifier for 24 hours or until needed.
<div class="bvseo-author">Answered by: Holmes Consumer Care</div>
<div class="bvseo-pubdate">Date published: 2021-09-19</div>
</div>
</div>
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