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10 Best Air Purifiers Under 100
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Buying Guide for the Best Air Purifiers Under 100
Choosing the right air purifier can make a big difference in your home’s air quality, especially if you have allergies, pets, or simply want cleaner air. When you’re shopping for an air purifier under $100, it’s important to focus on the essential features that provide the best value and performance for your needs. Pay particular attention to the key specifications to find a model that fits the size of your room, your specific air quality concerns, and your day-to-day lifestyle.Filter TypeThe filter type determines what kind of particles the air purifier can remove from the air. Common filters include HEPA (captures small particles like dust, pollen, mold), activated carbon (removes odors and gases), and basic pre-filters (catching larger debris like hair). If you’re focused on removing allergens, look for a true HEPA filter. Those concerned about odors or smoke should consider models with activated carbon filters. Think about what bothers you most—dust, allergies, pet smells, or smoke—and choose a filter type that targets those problems.
Room Coverage AreaRoom coverage area indicates the maximum size of space the air purifier can effectively clean, usually measured in square feet or meters. Small units generally cover spaces up to 100 sq. ft., which suits bedrooms or offices. Medium units can cover up to 200-300 sq. ft., ideal for living rooms. Larger coverage areas are rare under $100 but sometimes available for more open spaces. Match the purifier’s coverage with your room’s size for the best results; using a smaller purifier in a large room will not be effective.
Clean Air Delivery Rate (CADR)CADR is a measurement of how quickly the air purifier can clean air of certain particles (like dust, pollen, and smoke). A higher CADR means faster and more efficient cleaning. You’ll usually find values for each particle type, but even one good rating can be useful. For small rooms, a CADR of 60-100 is adequate, while medium spaces benefit from 100-150. Choose a CADR that matches your room size and your sensitivity to airborne particles; the more sensitive you are, the higher the CADR you may want.
Noise LevelNoise level tells you how loud the air purifier is during operation, often listed in decibels (dB). Lower numbers mean quieter operation. If you’ll use the purifier in a bedroom or study, look for models with a noise level below 50 dB on the lowest setting for undisturbed sleep or work. If you plan to use the purifier in a living area where noise isn’t as important, a higher noise level may be acceptable.
Filter Replacement and MaintenanceChanging filters is a regular part of owning an air purifier, and the ease and cost of replacement can affect your long-term experience. Look for info on how often filters need to be replaced (typically every 3-6 months) and how easy it is to swap them out. If you prefer less maintenance, choose a model with longer-lasting or washable filters. Consider how much effort and cost you are willing to invest in upkeep when making your decision.