Powerful large-room air purifier with triple True HEPA filters
Visit Honeywell →The Honeywell HPA300 is the best large-room air purifier, designed to clean the air in spaces up to 465 square feet with impressive speed and efficiency. Honeywell is a trusted name in air quality, and the HPA300 is their top-of-the-line consumer model featuring three True HEPA filters that work together to capture 99.97% of airborne particles as small as 0.3 microns — including dust, pollen, pet dander, mold spores, and smoke. With a CADR of 320 CFM for dust, 300 CFM for pollen, and 280 CFM for smoke, it delivers more clean air per minute than most competitors in its class. The HPA300 is straightforward and easy to use: three fan speeds plus turbo mode, a filter reset indicator, and a simple timer. It doesn't have fancy smart features like air quality sensors or Wi-Fi, but it focuses on doing one thing — cleaning air — and does it extremely well. If you have a large living room, open-concept space, or just want maximum air cleaning power, the Honeywell HPA300 delivers proven performance from a brand you can trust.
Three True HEPA filters working simultaneously to capture 99.97% of particles as small as 0.3 microns. More filter surface area means more clean air per minute and longer filter life. Perfect for large rooms and heavily polluted environments.
AHAM-verified to clean the air in rooms up to 465 square feet 5 times per hour (5 ACH). That's one of the largest coverage areas you'll find in a consumer air purifier. Great for living rooms, open-concept spaces, and basements.
No confusing menus, no apps to set up, no Wi-Fi required. Just turn it on, select your fan speed (low/medium/high/turbo), and let it clean. The filter indicator lets you know when it's time to replace filters. Sometimes simple is best.
Independently tested and verified by AHAM (Association of Home Appliance Manufacturers) for CADR performance: 320 CFM (dust), 300 CFM (pollen), 280 CFM (smoke). You can trust the numbers are real.
| Filtration | 3-stage: Pre-filter + Activated Carbon + 3x True HEPA |
|---|---|
| HEPA Type | True HEPA (99.97% at 0.3μm) |
| CADR (Dust/Pollen/Smoke) | 320 / 300 / 280 CFM (AHAM verified) |
| Room Coverage | Up to 465 sq ft (43 sq m) at 5 ACH |
| Noise Level | 31 dB (low) — 65 dB (turbo) |
| Filter Life | HEPA filters: ~12 months · Carbon pre-filter: ~3 months |
| Smart Sensor | No — manual speed control only |
| Weight | 17 lbs (7.7 kg) |
| Feature | Honeywell HPA300 | Coway AP-1512HH | Blueair Blue Pure 211+ |
|---|---|---|---|
| Price | $299 | $229 | $349 |
| HEPA Type | True HEPA (x3) | True HEPA | HEPASilent |
| CADR (Dust) | 320 CFM | 246 CFM | 350 CFM |
| Room Size | 465 sq ft | 361 sq ft | 540 sq ft |
| Air Sensor | No | Yes | No |
| Auto Mode | No | Yes | No |
| Filter/Year | $60-80 | $30-40 | $50-70 |
| Warranty | 5 years | 3 years | 1 year |
The Honeywell HPA300 has more cleaning power and covers larger rooms (465 sq ft vs 361 sq ft). The Coway has a smart air quality sensor with auto mode, is quieter on low, and is cheaper to buy and maintain. If you have a large room and maximum cleaning power is your priority, get the HPA300. If you want auto mode, quieter operation, and better value, get the Coway. Both are excellent air purifiers.
No, the HPA300 does not have a built-in air quality sensor or auto mode. You manually select the fan speed (low, medium, high, or turbo). This is actually a plus for some people — no sensors to calibrate or break, just reliable, straightforward operation. If you want auto mode, look at the Coway AP-1512HH or a smart air purifier.
The HPA300 uses two types of filters: the True HEPA filters (3 included) and the activated carbon pre-filters. The HEPA filters last about 12 months and a full set of 3 costs $60-$80. The carbon pre-filters should be replaced every 3 months and cost $15-$20 for a 4-pack. Total annual filter cost is about $60-$100 depending on where you buy.
On the lowest setting, it's fairly quiet (about 31 dB) — comparable to a whisper or soft background noise. On medium and high, it gets noticeably louder, and turbo mode is quite loud (65 dB — about as loud as a vacuum cleaner). For bedroom use, the low setting should be fine for most people. If noise is a top concern, the Coway AP-1512HH is quieter.
The Honeywell HPA300 is the best large-room air purifier you can buy. With three True HEPA filters, AHAM-verified high CADR ratings, and coverage for rooms up to 465 square feet, it delivers serious air cleaning power. It lacks smart features like auto mode and Wi-Fi, but if you want proven performance from a trusted brand and don't mind manual control, this is the one to get.
Buy HPA300 →