How To Make An Inexpensive DIY Air Purifier

Air filter

The steps people need to take to deal with mold illness is expensive – really expensive! Once the immune system has been triggered by mold or other environmental toxins due to water damage, creating a safe place to live is a must and a high-quality air purifier is just one of the components necessary for cleaning air. Usually you get what you pay for when it comes to air purifiers. Recommendations vary with every company as most times they are promoting their products first and foremost.

My family has invested in one expensive air purifier that is really quiet. We also have purchased some less expensive models which, while not as quiet, seem to work fairly well and cost a lot less. Avoid any purifier that emits ozone!

Affordable Air-Cleaning Option

Air purification and clean air doesn’t have to be expensive – try this affordable air cleaning option! This $16 box fan with a $9 HEPA filter (that’s all you need!) option shared by a University of Michigan Sinus Center Doctor is actually down-right cheap as well as effective, according to one expert.

See the video below:

How To Set It Up

Order the best quality (Merv 13) filter for best results. I buy four filters at time for the best pricing and find they need to be changed every three months. Your results may vary. I have four of these box fan type filters running at my house. The system definitely works. The proof is in the dirty filters that need to be replaced! 

DIY Air Filtration

Make sure to note the arrow on the edge of the filter to determine which side faces the fan. The best way to position the filter is to locate it on the INTAKE side of the fan. This will help keep the fan clean (by filtering air before it enters the fan) and will allow the filter to be attached to the fan by air pressure alone. No tape is needed!

My filter after 3 months!

This is my filter after three months (yes, that’s with a dog!). The filter used to be white. If you have any experiences with do-it-yourself solutions like this one that have helped in your health recovery, please share your experiences.

Cheryl Ciecko is an ALA, LEED AP, Licensed Architect who helps homeowners and building professionals create safe homes through online education to prevent mold, water damage, and poor indoor air quality. 


You can find her video masterclasses, online programs, and education subscription options at .


For detailed answers on your specific situation or building project, schedule your appointment for an individual consultation.




The information contained in this presentation is for educational purposes only and is not intended to diagnose, prescribe, treat, or cure any disease, ailment or injury to the body. It is not medical advice. FDA regulations prohibit the use of medical claims in conjunction with the sale of any product not approved by the FDA. Statements made herein have not been evaluated by the FDA. 

Any products, techniques, and/or personal usage tips referred to are not suggested as a replacement for proper treatment from a licensed health care professional. I am not a licensed health care professional and the decision to use or not to use any of this information is the sole responsibility of the listener and/or reader. Everyone is an individual with different body types, different blood types, different body chemistries, and it is important to remember that what works for one person may not work for another person.