Name: 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 HEP...
Brand: PuroAir
SKU: B0B286BFZQ
Price: 279 USD
Availability: InStock
Rating: 4.6 (16032 reviews)

Our Verdict

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 covers 1000 sq ft with a 640 CADR smoke rating, vastly outperforming Shark HC502's 208 sq ft and 133.33 CADR. Choose Shark for a 3-in-1 purifier, heater, and fan.

$279Buy on Amazon

Bottom Line: PuroAir 240 is the better choice. It covers 1000 sq ft with a 640 CADR smoke rating, vastly outperforming Shark HC502's 208 sq ft and 133.

Key Differences

The most significant spec differences at a glance

640

Cadr Smoke

380% more

133.33

1,000

Coverage Sq Ft

380% more

208.33

Advantages

Where each product wins

PuroAir

Cadr Smoke: 380% higher (640.0 vs 133.33)
Coverage Sq Ft: 380% higher (1000.0 vs 208.33)

Who Should Buy Which?

Find the right product for your needs

Buy PuroAir if...

PuroAir 240 HEPA Air

If you live in a large home or have an open-concept living space and prioritize powerful, rapid air purification, the PuroAir 240 is your ideal choice. With a massive 1,000 sq ft coverage and a smoke CADR of 640, it efficiently cleans air of pollutants, smoke, and allergens. Its smart sensor and quiet operation make it perfect for continuous use, ensuring clean air without disruption, all at a competitive price for its capabilities.

Buy Shark if...

Shark HC502 3-in-1 Clean

The Shark HC502 is best for individuals seeking a versatile, space-saving appliance for smaller rooms like bedrooms or home offices. If you need not only effective air purification but also the convenience of a heater and a fan in one unit, this is for you. While its 208 sq ft coverage and 133.33 CADR are modest for purification, its superior Nanoseal HEPA filtration and integrated climate control offer year-round comfort and clean air in compact spaces.

Spec Comparison

6 specs compared

Specification	PuroAir 240 HEPA Air	Shark HC502 3-in-1 Clean
Price	$279	$320
Rating	4.6(16.0k)	4.3(678)
Cadr Smoke	640	133.33
Coverage Sq Ft	1000	208.33
Energy Star	Yes	—
Filter Type	HEPA	Nanoseal HEPA
Smart Sensor	Yes	Yes
Model Number	—	HC502

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Pros & Cons

Quick overview of strengths and weaknesses

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 HC502 3-in-1

Pros

Offers air purification, heating, and fan functions.
Exceeds HEPA standards; captures 99.98% of particles.
Auto-adjusts power based on PM1/2.5/10 air quality.
Heats rooms while simultaneously purifying air.

Cons

Covers only 208 sq ft for effective 5x hourly air changes.
Requires periodic replacement of specialized Nanoseal filter

Frequently Asked Questions

Common questions about this comparison

Which air purifier is better for larger rooms?

The PuroAir 240 is superior for large rooms, covering up to 1,000 sq ft. In contrast, the Shark HC502 is designed for effective 5x hourly air changes in rooms up to 208 sq ft.

What's the main difference in their smoke removal capabilities?

The PuroAir 240 has a significantly higher CADR smoke rating of 640. The Shark HC502 has a CADR smoke rating of 133.33. This indicates PuroAir is much more effective at removing smoke.

Which product offers more combined functionalities?

The Shark HC502 offers more functionality as a 3-in-1 device, combining air purification with heating and fan capabilities. The PuroAir 240 focuses solely on air purification.

Do both air purifiers feature smart sensors?

Yes, both products include smart sensors. The PuroAir 240 automatically adjusts fan speed. The Shark HC502 auto-adjusts power based on real-time PM1/2.5/10 air quality readings.

Is there a significant difference in filter type and efficiency?

PuroAir uses a HEPA filter, capturing 99.9% of pollutants. Shark utilizes a Nanoseal HEPA filter, which it claims captures 99.98% of particles, exceeding standard HEPA efficacy.