Large-room / whole-floor · Honeywell

Honeywell HPA300 HEPA Air Purifier

Large-room / whole-floor air purifier

Updated October 2026

Quick verdict

A well-matched choice for rooms up to about 2250 square feet.

Strength
Rated for 2250 square feet.
Trade-off
Filters are an ongoing cost.
Right buyer
Rooms up to about 2250 square feet.
Room coverage
2250 sq ft
Filter type
HEPA
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Why it matters

The Honeywell HPA300 HEPA Air Purifier is a large-room / whole-floor air purifier that its maker rates for 2250 square feet.

At the usual 4.8 air changes an hour and an 8-foot ceiling, a 2,250-square-foot rating implies about 1,440 cubic feet of clean air a minute. In a 12-by-15-foot bedroom that would turn the air over roughly 60 times an hour.

Filtration: HEPA.

It qualifies for our lists Best Air Purifiers for Large Living Rooms, Best Honeywell filters and air products, where it is ranked against every model that meets the same rule.

Its rated room size of 2,250 square feet is one of the largest ratings we cover: 134 of the 152 purifiers with a stated figure come in lower, and the range runs from 62 square feet to 4,800 square feet.

Compared with the Honeywell QuietClean HFD-010 Air Purifier: rated room size 2250 square feet here vs 62 square feet.

Who it's for, and who should skip it

Good fit if

  • Rooms up to about 2250 square feet
  • Large open rooms

Look elsewhere if

  • Whole-home filtration on its own
  • Removing gases without a substantial carbon stage

Pros and cons

Pros

  • Rated for 2250 square feet

Cons

  • Filters are an ongoing cost
  • Size to the room at 4.8 air changes per hour

Limitations to weigh

  • Specifications are the maker's or seller's own figures; check fit against your equipment's model number and the actual size.

Specifications

The bracket shows where each figure comes from.

ControlTouchRetailer
Filter typeHEPARetailer
Room coverage2250 sq ftRetailer

Alternatives worth comparing

More air purifiers we cover

All air purifiers, compared in one table · Every Honeywell product we cover

Final verdict

A well-matched choice for rooms up to about 2250 square feet. Confirm the model it fits before ordering.

Where to buy

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

How big a room does the Honeywell HPA300 HEPA Air Purifier cover?
The maker rates it for 2250 square feet. Treat that as the room size for allergy-level cleaning; larger figures quoted per hour describe one air change, not continuous cleaning.