Your indoor air is often more polluted than the air outside. Since we spend most of our time indoors, our exposure to poor indoor air quality puts us at risk for a number of ailments.

Using an air purifier will help create cleaner, healthier air in your home or office, so you can enjoy better indoor air quality. Answer these questions before you purchase one:

1. Why Do I Need An Air Purifier?

Air purifiers are the best way to clean your air indoors, which can be polluted and full of triggering particles like pollen and dust. They also help maintain a healthy environment by removing pet dander, mold spores, ragweed and and more.

You can use our Product Finding Wizard to find the perfect air purifier for you. Some models are designed for specific purposes:

Specific Needs

  • Allergies: If you have allergies, you should choose an air purifier designed for allergy relief. They typically have multiple filters, including HEPA filters, to remove indoor allergens.
  • Asthma: If you suffer from asthma or if your symptoms are triggered by odor and chemical pollutants, you’ll want to consider an asthma air purifier or an odor and chemical air purifier. These air purifiers contain added odor and chemical filtration as well as HEPA filters for allergen particle removal.
  • Smoke: Smoke air purifiers are specifically designed to remove smoke, fireplace soot, and other associated fumes that could aggravate existing respiratory conditions or cause unpleasant odors in your environment.
  • Pets: Select air purifiers are designed specifically for handling pets–they remove pet dander, odors, and hair. View pet air purifiers here.
  • Chemical Sensitivities: If you are extremely sensitive to chemicals, you might consider an air purifier for multiple chemical sensitivities (MCS). These models contain even more odor and chemical filtration and are often manufactured with materials that will not off-gas chemicals into the air and aggravate your symptoms.

2. What Size Air Purifier Do I Need?

To choose the right size air purifier for your needs, consider the square footage of the room you want to purify.

If you have allergies or asthma and are looking for an air purifier to help manage your symptoms, you should also consider an air purifier’s air change per hour (ACH) rate. ACH refers to the number of times an air purifier can filter the entire volume of air in the treatment space each hour.

Air purifiers that can clean the air in a space at least four times per hour are best for allergy- and asthma-sufferers. A rate of four air changes per hour also ensures that the air purifier thoroughly cleans the air and filters out as many microscopic symptom-triggering allergens as possible to keep you breathing easy.

Our air purifiers are sized for four air changes per hour. Use these guides:

3. What Features Do I Need on My Air Purifier?

After choosing the type and size of air purifier you need, consider whether or not you’d like any special features.

Features include:

  • To save money and conserve energy, look for air purifiers that are Energy Star-rated by the EPA.
  • You can also find wi-fi air purifiers you can control from your phone.
  • Air quality indicators give real-time updates on the quality of your air.
  • Other features include: caster wheels, handles for easy mobility, remote controls, multiple fan speeds, and filter change indicators.

4. Where Should I Put My Air Purifier?

son and daughter with air purifier In most situations, we recommend that you place your air purifier in your bedroom since that’s where you spend most of your time.

Keep in mind that portable air purifiers are designed primarily to purify the air in one room only, so you may need to invest in additional units for other rooms.

Alternatively, you can choose a unit that includes caster wheels, handles, and other portability features to make it easier to move it from room to room.

Whole house air purifiers are becoming popular choices for clean air in every room of your home. These units connect to your home’s existing HVAC system to purify your indoors as you heat, cool, or ventilate your home.

5. How Much Maintenance Do Air Purifiers Require?

The main type of maintenance required with air purifiers is replacing air filters. How often do you need to replace them?

  • HEPA Filters: HEPA filters last about one year depending on use. Certain brands, like IQAir HyperHEPA filters, last up to 5 years.
  • Carbon Filters: Activated carbon filters typically last 6 months.
  • Pre-Filters: Pre-filters generally last 3 months, but some filters are washable for long-term filtration.

Other types of air purifiers, such as our AirFree air sterilizers, use heat or ultraviolet light to purify your air and kill germs and allergens. These models never need filter replacements for your convenience.

In Summary

Before buying an air purifier: Get one that is equipped for your room size, filters out the particles in your home, and is easy to use.

Use our Product Finding Wizard to find an air purifier appropriate for your space.

Still Have Questions?

For more information on a specific air purifier or other air treatment solutions, browse our products and visit our Air Purifier Knowledge Center. Not sure what’s best for you? We can take the guesswork out of decision-making. Contact one of our air treatment specialists at 1-800-934-9194. We want to help make your indoor environment healthy and comfortable.