How often do I need to replace the filter?

GermGuardian recommends replacing the HEPA filter every 6 to 8 months, depending on use and air quality.

Does it have an auto mode?

Yes, the Intellisense indicator monitors air quality 60 times per minute and automatically adjusts fan speed.

Is it quiet enough for a bedroom?

On the lowest speed it runs in an ultra-quiet mode, but higher speeds produce more noise.

What is included in the box?

The purifier comes with a True HEPA filter installed and a 5-year limited warranty.

Does it connect to an app or smart home system?

No, it does not have Wi-Fi or app connectivity; controls are on the unit.

GermGuardian AirSafe Intelligent Air Purifier, HEPA Pure Filter, AP3151W

Best price now

$71.99at WalmartChecked Nov 10

Prices are checked against each store and labelled with when.

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GermGuardian AirSafe Intelligent Air Purifier, HEPA Pure Filter, AP3151W

Best price now

$71.99at WalmartChecked Nov 10

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $71.99 at Walmart on Nov 10.

Our take on the GermGuardian AirSafe Intelligent Air Purifier, HEPA Pure Filter, AP3151W

The GermGuardian AirSafe AP3151W is a white tower air purifier with a 360-degree True HEPA filter and three layers of protection. It has four speed settings, an ultra-quiet low mode, and an Intellisense air quality indicator that samples the air 60 times per minute and adjusts speed automatically. It circulates a 226 sq. ft. room every 12.5 minutes or a 1000+ sq. ft. room hourly, suiting bedrooms, offices, and open spaces. Compared with rivals, it offers smart auto mode and a 5-year warranty, but its coverage is modest for very large rooms and replacement filters are proprietary.

Best forBedrooms and offices up to 226 sq. ft.Allergy sufferers wanting HEPA filtrationPeople who want automatic air quality controlOpen-concept spaces needing hourly circulation

Pros

360-degree True HEPA filter with three layers
Intellisense monitors air quality 60 times per minute
Four speeds including an ultra-quiet low setting
5-year limited warranty
Compact tower design in white

Cons

Coverage drops to one air change per hour in large rooms
Replacement filters are proprietary and add ongoing cost
No remote control or app connectivity
Higher speeds can be noisy

GermGuardian AirSafe Intelligent Air Purifier, HEPA Pure Filter, AP3151W prices at every store

WalmartNew
In stockSold by Mirwood LLCReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$71.99Free shippingChecked Nov 10
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What reviewers say

4.7 / 551 ratings

Owners rate the AP3151W highly for its effective HEPA filtration and automatic air quality sensing. Many appreciate the quiet low setting for bedrooms, though some note that higher speeds are louder and filter replacements are costly.

What people mention

FiltrationPraisedReviewers say the HEPA filter noticeably reduces dust and allergens.
Auto modePraisedThe Intellisense auto mode is seen as responsive and convenient.
NoiseMixedLow speed is very quiet, but higher speeds are noticeably louder.
Filter costCriticisedSome owners find replacement filters expensive over time.
CoverageMixedWorks well in medium rooms but may struggle in large open spaces.

About the GermGuardian AirSafe Intelligent Air Purifier, HEPA Pure Filter, AP3151W

The GermGuardian AirSafe AP3151W is an air purifier that filters odors and traps allergens. It uses 3 layers of protection, including a 360 Degree True HEPA filter.

An Intellisense air quality indicator measures the air quality 60 times per minute and monitors it 24/7. When it detects poor air, it adjusts the fan speed automatically. The purifier has 4 speed settings, and the lowest is an ultra-quiet mode.

It circulates the air in a medium 226 sq. ft. room every 12.5 minutes, or in a large 1000+ sq. ft. room every hour. It is designed for rooms such as bedrooms, offices, basements and other open spaces. Genuine GermGuardian replacement filters are made to fit specific unit styles.

Model: AP3151W
Color: White
Filtration: 3 layers of protection with a 360 Degree True HEPA filter
Speed settings: 4, with an ultra-quiet mode on the lowest setting
Air quality sensor: Intellisense indicator, measures 60 times per minute, adjusts speed automatically
Air changes: 226 sq. ft. room every 12.5 minutes; 1000+ sq. ft. room every hour
Suited rooms: Bedrooms, offices, basements, open concept spaces
Warranty: 5 year limited

Specifications

color: WhiteSource

Questions and answers

How often do I need to replace the filter?: GermGuardian recommends replacing the HEPA filter every 6 to 8 months, depending on use and air quality.
Does it have an auto mode?: Yes, the Intellisense indicator monitors air quality 60 times per minute and automatically adjusts fan speed.
What room size does it cover?: It circulates a 226 sq. ft. room every 12.5 minutes, or a 1000+ sq. ft. room once per hour.
Is it quiet enough for a bedroom?: On the lowest speed it runs in an ultra-quiet mode, but higher speeds produce more noise.
What is included in the box?: The purifier comes with a True HEPA filter installed and a 5-year limited warranty.
Does it connect to an app or smart home system?: No, it does not have Wi-Fi or app connectivity; controls are on the unit.
Where is the GermGuardian AirSafe Intelligent Air Purifier, HEPA Pure Filter, AP3151W cheapest?: At Walmart, for $71.99, as of our latest check.
What do buyers say about the GermGuardian AirSafe Intelligent Air Purifier, HEPA Pure Filter, AP3151W?: Rated 4.7 out of 5 from 51 ratings.