Picking the right air purifier might seem tough with all the different options out there. While people usually know a few things about air purifiers, knowing all the features of an air purifier to look for can help you find the right one the first time.
This guide explains the key features to look out for, helping you find a purifier that really suits what you need. Whether it’s the type of filters or less known, knowing these details will make sure you get a device that improves your air at home in the most effective way.
Best Features to Look For in an Air Purifier
- True HEPA Filter
- Activated Carbon Filter
- Pre-Filter
- Ionizer
- High Clean Air Delivery Rate (CADR)
- Air Quality Sensor
- Multiple Fan Speeds
- Sleep Mode
- Energy Efficient
- Warranties
1. True HEPA Air Filter
A HEPA (High-Efficiency Particulate Air) filter is essential for any effective air purifier. It captures at least 99.97% of particles as small as 0.3 microns or smaller, including common allergens like pollen, dust mites, and pet dander. This feature is crucial not only for improving air quality but also for safeguarding health by reducing respiratory issues and capturing airborne pathogens.
It’s important to choose true HEPA filters, not “HEPA-like” alternatives, to ensure genuine effectiveness. These filters need to be replaced so often per the manufacturer’s guidelines. This helps the air purifier operate optimally, maintaining clean and healthy indoor air. The best air purfiers today have either a true HEPA 13, or 14 filter.
2. Activated Carbon Filters
Activated carbon filters are crucial in any air purifier, specifically targeting odors and gases that HEPA filters can’t capture. These filters work through adsorption, trapping odor molecules and volatile organic compounds (VOCs) on the surface of activated carbon. This action is vital for eliminating unpleasant smells from smoke, pets, cooking, and chemical vapors.
An activated carbon filter is particularly important for those sensitive to smells and chemical exposure. This filter is usually connected as one of the layer next to the HEPA filter. It also has a certain lifespan that can vary and needs to be replaced.
3. Pre-filter
Pre-filters play a pivotal role in extending the lifespan of the more specialized filters within an air purifier. It is the first initial layer of defense, they capture larger particles such as hair, dust, and lint before they reach the HEPA or activated carbon filters. This not only prevents these primary filters from clogging prematurely but also enhances overall efficiency.
Not all pre-filter are made equal and operate at peak performance by focusing on smaller, more problematic pollutants. Some purifiers have special pre-filters that make the HEPA filter more powerful. This filter also needs to regularly cleaned or replaced if it is a part of a multi-stage filter.
4. Ionizer
Ionizers enhance air purifiers by introducing negative ions into the environment. These ions charge airborne particles like dust, pollen, and smoke, causing them to bind together and become heavier. As a result, these larger particles are easier to filter out or settle faster onto surfaces, which can be cleaned away. This feature helps to significantly refine the purification process.
The ionizer feature can be built in or available as an option mode. However, it’s important to use ionizers with care, as some can produce ozone which can be unsafe for pets or people. Look for models with certifications for low or no ozone emissions to ensure safe indoor air quality. For additional help finding a purifier without ozone, see our Are Air Purifiers Safe for Pets guide.
5. High Clean Air Delivery Rate (CADR)
The Clean Air Delivery Rate (CADR) measures the volume of clean air an air purifier produces on its highest setting, specifically evaluating its efficiency against pollutants like dust, smoke, and pollen. A higher CADR indicates better performance in larger rooms; for instance, a purifier with a CADR of 200 cubic feet per minute (CFM) can effectively clean a 400-square-foot room, while one with 150 CFM is ideal for a 300-square-foot space.
While CADR does not factor in for removal of odors or volatile organic compounds (VOCs), it it still a valuable metric for comparing the particle removal capabilities of different air purifiers. Higher CADR is better, but purifiers with a higher CADR usually costs more. The CADR can help you make sure your purifier is powerful enough to clean your specific room or area.
6. Air Quality Sensor
An air quality sensor is an excellent feature to look for when selecting an air purifier. When the device has the ability to automatically monitor quality, it can adjust its filtration settings based on the detected levels of pollutants.This smart functionality ensures that the purifier operates more efficiently.
By choosing an air purifier equipped with an air quality sensor, can get a more responsive and hassle-free approach to air purification. Some purifiers with an air quality sensor not only automates the purification process but also provides real-time visual display so you can see it working in real time.
7. Multiple Fan Speeds
Having multiple fan speeds is a staple feature that most air purifiers have. It allows you to customize the device’s performance based on your current needs, from low speeds for quieter operation during night or times of minimal activity, to higher speeds for rapid air cleaning when pollutant levels are high. Some purifiers have more one touch speed option or even a custom timer.
This feature can come more in handy than you might think. For instance, you can set a low speed to maintain a peaceful environment while reading or watching TV, and switch to a higher speed to quickly clear out cooking smells or reduce allergens after cleaning. This adaptability makes an air purifier with multiple fan speeds a smart choice for maintaining great air quality in ever changing indoor conditions.
8. Sleep Mode
Sleep mode is a valuable feature in air purifiers designed to maintain air quality without disrupting sleep. This mode adjusts the purifier to operate at lower, quieter settings, reducing noise to a barely audible level while still effectively cleaning the air. This ensures a night of uninterrupted rest in a fresh, pollutant-free environment.
The benefit of sleep mode extends beyond just noise reduction. It also helps conserve energy by optimizing the purifier’s performance to suit nighttime conditions, which often require less intensive air filtration due to decreased indoor activity. Most purifiers have this feature, but it is a good one to look at for.
9. Energy Efficient
Energy efficiency is important factor to consider when selecting an air purifier. Choosing a model designed to operate with lower power consumption can significantly reduce electricity costs and minimize environmental impact. Look that the air purifier is Energy Star certified, as this indicates it meets the strict set energy performance standards.
An energy-efficient air purifier does not just help in cost savings but also contributes to sustainable living. Energy Start certify models are designed to deliver maximum air purification without excessive use of energy, ensuring that they keep the air clean while being kinder to the planet. Energy-efficient models also tend to operate more quietly.
10. Warranties
When choosing an air purifier, the warranty important as some are quite the investment. It protects you from paying out of pocket if the device breaks under normal use. Many brands offer a standard 1-2-year warranty, which covers most issues you might encounter. The warranty length, coverage, and conditions are all important things to consider when selecting an air purifier to ensure it meets your long-term needs.
Some companies, like Medify Air purifiers, offer a lifetime warranty, which shows they have confidence in their products’ durability and performance. Longer warranties can provide peace of mind and also help justify the initial cost.
- True HEPA 13 Filter
- Activated Carbon Filter
- CADR Rating: 187m3/h
- Covers 403 Sq. Feet
- Lifetime Warranty
- True HEPA 13 Filter
- Activated Carbon Filter
- CADR Rating: 406m3/h
- Covers 896 Sq. Feet
- Lifetime Warranty
- True HEPA 13 Filter
- Activated Carbon Filter
- CADR Rating: 1009m3/h
- Covers 2298 Sq. Feet
- Lifetime Warranty
Other Important Features to Consider When Buying an Air Purifier
Child Lock: This safety feature is crucial for households with young children. A child lock prevents kids from accidentally changing the settings or turning the device on or off, ensuring the air purifier operates as intended without unintended interruptions.
Quiet Operation: For those sensitive to noise or for use in quiet environments such as bedrooms or offices, selecting an air purifier with a quiet operation mode is essential. This feature allows the purifier to clean the air effectively while minimizing noise, ensuring comfort during sleep or concentration-heavy tasks.
Smart App Integration: Air purifiers with smart app capabilities offer convenience and enhanced control. Through an app, you can monitor air quality, adjust settings remotely, and receive real-time updates about filter life and air status. This integration makes managing indoor air quality effortless and accessible from anywhere.
UV-C Light: Some air purifiers include UV-C light to help eliminate bacteria and viruses. This feature uses ultraviolet light to provide an extra level of sanitization, destroying microbial pollutants that can affect health. It’s an added layer of protection that can be particularly beneficial during cold and flu season.
Large Coverage Area: If you need to purify air in a large space, consider the coverage area of the air purifier. Models designed for larger spaces can efficiently circulate and clean air in extensive areas, making them ideal for open floor plans or larger rooms.
Portable Design: A portable air purifier is a good choice for those who need to move their unit between rooms or take it on travels. Lightweight and often compact, these purifiers provide flexibility in where you can achieve clean air, whether it’s at home or on the go.
Final Thoughts
When it’s time to choose an air purifier, think about what matters most for your space and health. While a HEPA filter is critical component, what other features might be nice or a necessity. Are you looking for a model that doesn’t rack up the electric bill? Or maybe you need a purifier that’s easy to use and fits right into your daily routine?
Consider the size of the room, the kind of pollutants you need to deal with, and any features that make the purifier easy to handle. With the right priorities in mind, you’ll find an air purifier that not only cleans the air effectively but also matches your life perfectly, keeping your air clean and safe for a long time.
