Practical, evidence-based guides to improving indoor air quality in apartments and small homes. No fear-mongering, no medical claims—just straightforward information to help you make informed decisions.
Essential guides for understanding and improving your indoor air
Everything you need to know about indoor air quality in apartments—what affects it, how to measure it, and how to improve it.
Read guide →How to choose an air purifier that fits your space, budget, and needs. What actually matters and what's marketing.
Read guide →Understanding what's actually in your indoor air and where it comes from.
Read guide →Making sense of the options
What HEPA actually means, how these filters work, and what they can and can't do.
Read more →Understanding Clean Air Delivery Rate and how to use it when comparing purifiers.
Read more →How to match a purifier to your room. Why "up to X sq ft" claims can be misleading.
Read more →The real cost of running an air purifier: electricity, filter replacements, and maintenance.
Read more →Finding air purifiers that won't disrupt your sleep. Understanding noise levels.
Read more →How to keep your air purifier working effectively. Filter replacement and cleaning.
Read more →Targeted guides for common air quality issues
How air purifiers can help with allergens and what to look for.
Read more →Managing pet dander, odors, and hair in apartments.
Read more →What works for cigarette smoke, cooking smoke, and wildfire smoke.
Read more →Understanding odor sources and effective removal strategies.
Read more →Why apartments get dusty and practical ways to minimize it.
Read more →How humidity affects your indoor air and when to adjust it.
Read more →Other ways to improve your indoor air
How ventilation affects air quality and what you can control as a renter.
Read more →Separating the myth from reality on plants and air purification.
Read more →When monitoring makes sense and what to look for in a device.
Read more →Tools and references for your research
Side-by-side comparison of different air purifier types and features.
View comparison →Terms and jargon explained in plain language.
View glossary →Room-by-room checklist for assessing and improving your air quality.
View checklist →