Honeywell AllergenPlus HPA304 HEPA Air Purifier
- 465 sq ft room, filtered up to 4.8 times an hour
- 2250 sq ft in 1 hour per the title
- 3 cleaning levels, including Turbo Clean
- HEPA filtration for allergens, dust, pollen and smoke
- Genuine Honeywell filters recommended
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A large HEPA purifier with three cleaning levels and a Turbo Clean setting for big rooms. Dimensions, noise level and filter life are not given, and the coverage figures use different bases.
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ASIN: B07DD9H6YHModel: HPA304Category: HEPA Air Purifiers
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Overview
A homeowner with a big open room and allergy concerns gets a large HEPA purifier from the Allergen Plus series, with three cleaning levels. Turbo Clean is among them, and the maker pairs the unit with its own filters.
A big coverage rating and a Turbo Clean level suit large rooms. The title and the specs quote coverage on different bases, so judging the real fit takes care, and noise, size and filter life are missing.
Who it's for
Allergy-conscious households with a large open room are the target. Smaller bedrooms where noise matters, and shoppers who need dimensions or replacement-filter details, should look at another model.
Pros and cons
- Turbo Clean level
- Three cleaning levels
- Part of the Allergen Plus series
- Noise level not listed
- Coverage quoted on different bases
Performance notes
Air is drawn through the HEPA filter and recirculated, and the fan level sets how fast the room air turns over. Turbo Clean is the level for fast cleanup. Coverage depends on the room layout, and the maker recommends genuine filters for the best results.
Specifications
| Brand | Honeywell |
|---|---|
| Model | HPA304 |
| Construction & materials | |
| Color | White |
| Compatibility & installation | |
| Replacement filters | Genuine Honeywell recommended |
| Other details | |
| Floor Area | 465 sq ft, filtered up to 4.8 times an hourlower than 71% of 22 hepa air purifiers |
| Filter Type | HEPA |
| Title coverage | 2250 sq ft rooms in 1 hour |
| Cleaning levels | 3, including Turbo Clean |
| Series | Allergen Plus |
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Frequently asked questions
How do I install or replace filters in the Honeywell HPA304?
The listing gives no steps. It says to use only genuine Honeywell air purifier filters for best performance, so follow the manual.
What is Turbo Clean on the Honeywell HPA304?
It is one of three air cleaning levels listed for the purifier.
Can I use generic filters in the Honeywell HPA304?
The listing warns that compatible does not mean comparable and recommends genuine Honeywell filters.
How big a room does the Honeywell HPA304 cover?
The specs give an extra-large room size, and the title gives a separate whole-hour figure. The two use different bases, so choose by the smaller one.