10 Best Air Purifiers Under 100

The Philips Series 3000i is a powerful air purifier that excels in cleaning large rooms, covering up to 135 m² with fast, 360-degree airflow. It uses a combined HEPA and carbon filter capable of removing ultrafine particles as tiny as 0.003 microns, including dust, allergens, gases, and even bacteria and viruses. This makes it a great choice for thorough air purification in bigger spaces or for those with allergies and sensitivities.

The purifier offers smart features such as real-time air quality monitoring, app control, and voice commands through Alexa, adding convenience and ease of use. The night mode helps keep noise and light low while you sleep, making it less disruptive. Noise levels are generally well controlled, although some operation sounds may be noticeable in very quiet settings.

Considering the advanced features and larger coverage, this model might be priced above the typical budget under $100 and could be more than what small-room users require. If you’re looking for a reliable, smart purifier for medium to large rooms and can manage the upkeep, this Philips model delivers excellent cleaning performance and helpful technology.

The Levoit Core 300 is a solid choice for anyone looking for an affordable air purifier under $100 that works well in medium-sized rooms up to about 40 square meters. It uses a three-stage filtration system including a True HEPA filter, a pre-filter, and an activated carbon filter. This setup can capture 99.97% of tiny particles like dust, pollen, pet dander, and smoke, which is great for allergy sufferers or those wanting cleaner air. Its clean air delivery rate (CADR) of 187 m³/h means it can refresh the air effectively in its coverage area, making it suitable for bedrooms, offices, or living rooms.

Noise-wise, the purifier is impressively quiet in sleep mode at just 24 dB, so it won’t disturb your sleep, and the display light can also be turned off for added comfort. It offers four fan speeds and a timer option for 2, 4, 6, or 8 hours, giving you flexibility based on your needs. Maintenance is straightforward with an easy-to-check filter replacement indicator.

While it covers up to 40 m² effectively, it might be less suitable for larger rooms since heavy pollutants may require more powerful purifiers. Additionally, the size and weight are a bit on the bulkier side for portable use. With no ozone production and a focus on quiet operation, the Core 300 presents a reliable, user-friendly air purifier that balances performance and price well.

The Philips Air Purifier Smart 1000i Series stands out with its strong room coverage of up to 78 m², making it suitable for medium to large rooms. It features a 3-layer HEPA filter that captures 99.97% of tiny particles, including pollen, dust, and smoke, which is great for allergy sufferers. The Clean Air Delivery Rate (CADR) of 300 m³/h means it can clean air quickly, purifying a 20 m² space in under 10 minutes.

One of its major strengths is its quiet operation, running as low as 15 decibels in sleep mode, so it won’t disturb you at night. Plus, it’s energy efficient, using less power than a standard light bulb. The purifier also offers smart features like Wi-Fi connectivity and an app that lets you monitor air quality and control the device remotely, adding convenience. It has a built-in sensor to detect pollution levels and adjust its speed automatically, helping maintain good air quality without manual effort.

This model is highly capable, but filter replacements will be an ongoing cost and require regular maintenance to keep performance high. Also, given its size and weight (over 5 kg), it’s less portable than smaller models. If you are looking for a powerful, quiet, and smart air purifier for a larger room and don’t mind spending a bit on filter upkeep, this Philips unit is a solid choice under $100.