Honeywell HPA4300B specs
Honeywell HPA4300B is an ENERGY STAR certified air purifier listed for rooms up to 355 sq ft with a smoke CADR of 229 cfm and 185 kWh per year of energy use.
Honeywell HPA4300B lists a smoke CADR of 229 cfm (higher than 61% of the 216 certified ones) for rooms up to 355 sq ft, at 185 kWh per year and 0 ppb reported ozone.
Official specs
| CADR — smoke | 229 cfm |
|---|---|
| CADR — dust | 238 cfm |
| CADR — pollen | 245 cfm |
| Room size listed | 355 sq ft |
| Annual energy use | 185 kWh/yr |
| Efficiency (smoke CADR per watt) | 7.4 cfm/W |
| Ozone emissions | 0 ppb |
| Technology | Fan and Filter |
| Filter type | HEPA |
| Automatic mode | Air Quality Sensor |
| Connected | No |
| Noise level | n/c |
| ENERGY STAR certified | 2025-12-12 |
Similar air purifiers
| Model | CADR (smoke)cfm | Room sizesq ft | EnergykWh/yr | Ozoneppb |
|---|---|---|---|---|
| Honeywell HPA4300B this page | 229 | 355 | 185 | 0 |
| LEVOIT Core 400S | 231 | 358 | 237 | 0 |
| Winix C610 | 248 | 384 | 235 | 1 |
| Coway AP-1523D | 255 | 395 | 219 | 0 |
Skip it if
- Your room is larger than 355 sq ft: ENERGY STAR lists this model for rooms up to that size (8-foot ceiling).
- You want Wi-Fi control: the listing shows no connected feature.
- Low running energy is your priority: it lists 185 kWh per year, and 59% of certified air purifiers list less.
How it ranks in the ENERGY STAR list
- smoke CADR: 229 — rank 84 of 216 certified air purifier models (higher is better).
- annual energy use: 185 — rank 129 of 216 certified air purifier models (lower is better).
- energy efficiency (CFM/W): 7.4 — rank 40 of 216 certified air purifier models (higher is better).
Ranks compare this model with every air purifier in the ENERGY STAR dataset (2026-11-06), not with products on sale today.
Reading these specs
- CADR
- Clean Air Delivery Rate, in cubic feet per minute, as listed for smoke, dust and pollen. Higher means more air cleaned per minute for that particle size.
- Room size
- The room size in square feet that ENERGY STAR lists for this model.
- kWh/yr
- Annual energy use as listed by ENERGY STAR.
- Ozone
- Ozone emissions in parts per billion as listed.
Noise level is not part of the ENERGY STAR dataset, so it shows as n/c. Check the maker’s own specification sheet for decibels.
Where to buy
Search Amazon.com for this exact model. Prices and availability change, so we don’t print them.
View on Amazon — search results for Honeywell HPA4300B on Amazon.comSee our Affiliate Disclosure.
Frequently asked questions
What room size is the Honeywell HPA4300B listed for?
Start with the room-size rating, then compare it with the room where the unit will sit. ENERGY STAR lists 355 sq ft for this model, with a smoke CADR of 229 cfm. Ceiling height and layout change real-world results, so treat it as a rated figure and leave the clearance the maker’s manual asks for around the intake and outlet.
How much energy does the Honeywell HPA4300B use?
The listing gives 185 kWh per year and an efficiency of 7.4 cfm per watt.
What filter does the Honeywell HPA4300B use, and does it produce ozone?
ENERGY STAR lists the filter type as HEPA. Ozone emissions are listed at 0 ppb. Compare the stated filter type rather than marketing language such as “HEPA-like”. Noise level is not part of the ENERGY STAR dataset (n/c), so see the maker’s specifications for decibels.
Sources
- ENERGY STAR certified air purifier data, record 4518177 (data.energystar.gov, dataset gaa3-swy6, updated 2026-11-06)
- ENERGY STAR product guidance for air purifiers
We compile and compare published data; we do not run our own product tests. See How We Compare.