PuroAir 240 HEPA Air Purifiers for Home Large Rooms - Covers Up To 1,000 Sq Ft - Filters Up To 99.9% of Pollutants, Smoke, Pollen, Dust - Quiet HEPA Air Filter - Air Purifiers for Bedroom (2 Pack) - High-End Air Purifiers
70

PuroAir

240 HEPA Purifiers

4.6
$279
Check Price
VS
Shark HC451 3-in-1 Clean Sense Air Purifier, Heater & Fan, HEPA Filter, 500 Sq Ft, Oscillating, Small Room, Bedroom, Office, Captures 99.98% of Particles for Clean Air, Dust, Smoke & Allergens, Black - High-End Air Purifiers
74

Shark

HC451 3-in-1 Clean

4.3
$200
Check Price

Our Verdict

PuroAir PuroAir 240 Wins

PuroAir 240 HEPA Air Purifiers for Home Large Rooms - Covers Up To 1,000 Sq Ft - Filters Up To 99.9% of Pollutants, Smoke, Pollen, Dust - Quiet HEPA Air Filter - Air Purifiers for Bedroom (2 Pack) - High-End Air Purifiers

It offers superior air purification with 1000 sq ft coverage and 640 CADR smoke. Choose Shark HC451 for its 3-in-1 air purifying, heating, and cooling capabilities in smaller spaces (104 sq ft).

$279Buy on Amazon

Bottom Line: PuroAir PuroAir 240 is the better choice. It offers superior air purification with 1000 sq ft coverage and 640 CADR smoke.

Key Differences

The most significant spec differences at a glance

640

Cadr Smoke

860% more
66.67
1,000

Coverage Sq Ft

860% more
104.17

Advantages

Where each product wins

PuroAir 240 HEPA Air Purifiers for Home Large Rooms - Covers Up To 1,000 Sq Ft - Filters Up To 99.9% of Pollutants, Smoke, Pollen, Dust - Quiet HEPA Air Filter - Air Purifiers for Bedroom (2 Pack) - High-End Air Purifiers

PuroAir

  • Cadr Smoke: 860% higher (640.0 vs 66.67)
  • Coverage Sq Ft: 860% higher (1000.0 vs 104.17)

Who Should Buy Which?

Find the right product for your needs

PuroAir 240 HEPA Air Purifiers for Home Large Rooms - Covers Up To 1,000 Sq Ft - Filters Up To 99.9% of Pollutants, Smoke, Pollen, Dust - Quiet HEPA Air Filter - Air Purifiers for Bedroom (2 Pack) - High-End Air Purifiers

Buy PuroAir if...

PuroAir 240 HEPA Air

The PuroAir 240 is perfect for homeowners with large residences, open-concept living areas, or those needing to purify multiple rooms. If your priority is exceptional air quality across a significant space, this unit's 1,000 sq ft coverage and powerful 640 CADR for smoke make it ideal. It suits individuals sensitive to pollutants, pet owners, or anyone wanting rapid, efficient air cleaning without needing additional heating or cooling functions, appreciating its quiet operation and smart automation.

Shark HC451 3-in-1 Clean Sense Air Purifier, Heater & Fan, HEPA Filter, 500 Sq Ft, Oscillating, Small Room, Bedroom, Office, Captures 99.98% of Particles for Clean Air, Dust, Smoke & Allergens, Black - High-End Air Purifiers

Buy Shark if...

Shark HC451 3-in-1 Clean

The Shark HC451 is perfect for individuals residing in smaller spaces like bedrooms, home offices, or dorms, where space-saving multi-functionality is key. If you need a device that not only purifies your air but also provides supplemental heating in winter and cooling fan relief in summer, this 3-in-1 unit is an excellent choice. Ideal for those on a tighter budget who prioritize versatility and comfort in a compact footprint, even with its more modest 104 sq ft air purification coverage.

Spec Comparison

6 specs compared

Specification
PuroAir 240 HEPA Air Purifiers for Home Large Rooms - Covers Up To 1,000 Sq Ft - Filters Up To 99.9% of Pollutants, Smoke, Pollen, Dust - Quiet HEPA Air Filter - Air Purifiers for Bedroom (2 Pack) - High-End Air Purifiers
PuroAir 240 HEPA Air
Shark HC451 3-in-1 Clean Sense Air Purifier, Heater & Fan, HEPA Filter, 500 Sq Ft, Oscillating, Small Room, Bedroom, Office, Captures 99.98% of Particles for Clean Air, Dust, Smoke & Allergens, Black - High-End Air Purifiers
Shark HC451 3-in-1 Clean
Price$279$200
Rating4.6(16.0k)4.3(355)
Cadr Smoke64066.67
Coverage Sq Ft1000104.17
Energy StarYes—
Filter TypeHEPANanoseal HEPA
Smart SensorYesYes
Model Number—HC451

Swipe horizontally to see all columns

Pros & Cons

Quick overview of strengths and weaknesses

PuroAir 240 HEPA Air Purifiers for Home Large Rooms - Covers Up To 1,000 Sq Ft - Filters Up To 99.9% of Pollutants, Smoke, Pollen, Dust - Quiet HEPA Air Filter - Air Purifiers for Bedroom (2 Pack)

PuroAir 240 HEPA

Pros
  • Covers 1,000 sq ft area rapidly.
  • High CADR of 640 for effective smoke removal.
  • 3-layer filtration removes 99.9% of pollutants.
  • Smart sensor automatically adjusts fan speed.
Cons
  • Requires ongoing cost for filter replacements.
  • Specific noise output (dB) not detailed.
  • Lacks remote or smartphone app control.
Shark HC451 3-in-1 Clean Sense Air Purifier, Heater & Fan, HEPA Filter, 500 Sq Ft, Oscillating, Small Room, Bedroom, Office, Captures 99.98% of Particles for Clean Air, Dust, Smoke & Allergens, Black

Shark HC451 3-in-1

Pros
  • Purifies air, heats rooms, and provides fan cooling.
  • Nanoseal filter captures 99.98% of airborne particles.
  • Clean Sense IQ auto-adjusts purification power.
  • Operates quietly with dimmable lights for sleep.
Cons
  • Effective purification covers only 104 sq ft.
  • Low CADR of 67 for smoke limits purification speed.
  • Requires periodic filter replacements, adds cost.

Frequently Asked Questions

Common questions about this comparison

Which air purifier is better for large rooms?

The PuroAir 240 is significantly better for large rooms, covering up to 1,000 sq ft. The Shark HC451 is designed for small rooms, purifying only about 104 sq ft.

What is the main difference in smoke removal effectiveness (CADR)?

The PuroAir 240 has a much higher smoke CADR of 640, making it very effective for rapidly clearing smoke. The Shark HC451 has a CADR of 66.67, suitable for smaller purification needs.

Which product offers more features beyond air purification?

The Shark HC451 is a 3-in-1 device, offering air purification, heating, and fan cooling, providing versatility for climate control in addition to clean air. The PuroAir 240 focuses solely on air purification.

Which device has better coverage for general air purification?

The PuroAir 240 offers vastly superior coverage at 1,000 sq ft, compared to the Shark HC451's 104.17 sq ft. This makes the PuroAir ideal for larger open-plan living areas.

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