Shop
  • Deals
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.
TermsPrivacy
BrowseBrowse deal.ai
Deal.ai › Compare

Medify Air MA-40 Air Purifier vs Dyson Pure Cool TP4A Purifier Fan

Buy the Medify Air MA-40 if you want a true HEPA purifier that cleans a whole room; it costs $249.99 at shopsymtek.com as of November 7, 2026, and has hit as low as $140.32 since October 31. Buy the Dyson TP4A if you want one machine that also cools you with a fan, but its 112 sq ft coverage and 4.1 rating from 65 reviews make it a small-room pick. The Medify is the better value for air cleaning; the Dyson is the better value only if the fan matters to you.

Ask our shopping agent

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Medify Air
Medify Air MA-40 Air Purifier with H13 HEPA Filter

Medify Air MA-40 Air Purifier

Medify Air MA-40 Air Purifier with H13 HEPA Filter

4.6(879 ratings)
$249.99at shopsymtek.comObserved at 2:48 PM
See all prices and details
Visit shopsymtek.com

Choose the Medify Air MA-40 if you need real coverage for a bedroom, living room or open space and want H13 HEPA filtration at a lower price.

Pros
  • H13 True HEPA removes 99.9% of particles down to 0.1 microns.
  • Covers up to 1,793 sq ft, far more than the Dyson.
  • Carbon pellet filter targets odors, smoke and formaldehyde.
  • Energy Star rated with sleep mode, timer and child lock.
  • 4.6 out of 5 from 879 ratings, and recent prices dropped to $140.32.
Cons
  • Purifier only; no fan for cooling.
  • Bulky tower design in white.
  • Replacement HEPA and carbon filters are a recurring cost.
Dyson
Dyson Pure Cool Purifier Fan TP4A

Dyson Pure Cool TP4A Purifier Fan

Dyson Pure Cool Purifier Fan TP4A

4.1(65 ratings)
See all prices and details

Choose the Dyson Pure Cool TP4A if you want a purifier that doubles as a cooling tower fan in a small room and you prefer Dyson's design.

Pros
  • Works as both a purifier and a cooling tower fan.
  • 10 fan speeds give fine control.
  • Activated carbon filter handles odors and smoke.
  • Slim tower footprint suits small rooms.
Cons
  • Coverage is only 112 sq ft.
  • 4.1 out of 5 from just 65 ratings.
  • No micron-level filtration claim or CADR figure given.
  • No price was provided, so value is hard to judge against the Medify.

What separates them

Medify Air MA-40 Air PurifierDyson Pure Cool TP4A Purifier Fan
Coverage areaUp to 1,793 sq ft (1,600 sq ft per the shop page)112 sq ft
Filtration3-stage: prefilter, H13 True HEPA, carbon pelletHEPA plus activated carbon
Particle removal claim99.9% of particles down to 0.1 micronsRemoves dust, pollen, pet dander, smoke (no micron figure given)
Fan functionPurifier onlyPurifier and cooling tower fan with 10 speeds
Price$249.99 at shopsymtek.com as of November 7, 2026No price given
Ratings4.6 out of 5 from 879 ratings4.1 out of 5 from 65 ratings
Filter typeReplaceable H13 HEPA and carbon filtersPermanent filter listed, plus replaceable carbon
Controls and extrasSleep mode, 3 fan speeds, 4-setting timer, child lock, filter indicator, Energy StarVariable speed with 10 speeds, filter change indicator

Price history

$249.99$140.32
Oct 31Nov 7
  • Medify Air MA-40 Air Purifier: lowest $140.32 on Oct 31 at Grainger Industrial Supply; $249.99 on Nov 7.
  • Dyson Pure Cool TP4A Purifier Fan: lowest $159.99 on Nov 3 at Walmart.

Prices at every store

Medify Air MA-40 Air Purifier

  • shopsymtek.comNew

    In stock

    $249.99Observed at 2:48 PM
    Visit shopsymtek.com
  • Medify AirNew

    In stock

    $449.99Observed at 11:48 AM
    Visit Medify Air
  • eBayNew

    In stock

    $601.99Observed at 11:48 AM
    Visit eBay

Also available at

  • Best BuyCheck price at Best Buy
  • Medify AirCheck price at Medify Air
  • Entergy NOLACheck price at Entergy NOLA

Store links may earn us a commission.

All 3 stores and price history →

Dyson Pure Cool TP4A Purifier Fan

  • DailyStealsCheck price at DailySteals
  • eBayCheck price at eBay
  • WalmartCheck price at Walmart

Store links may earn us a commission.

Prices and history →

Specs compared

SpecMedify Air MA-40 Air PurifierDyson Pure Cool TP4A Purifier Fan
HEPA FilterYesYes
Odor AbsorbingYesYes
FinishWhiteWhite
IonicYes—
Ozone FreeYes—
Energy StarYes—
Coverage Area1,793 square feet—
CADR Rating406 CADR—
Permanent Filter—Yes

What reviewers say

Medify Air MA-40 Air Purifier

  • 4.6 / 5879 ratings

Owners rate the MA-40 highly, praising its cleaning power and simple controls. Complaints center on filter replacement cost and noise at the top fan speed.

What people mention
  • FiltrationPraisedOwners say dust, pollen and pet hair drop noticeably with daily use.
  • NoiseMixedQuiet on low and medium, but high speed is loud enough to notice in a bedroom.
  • Filter costCriticisedReplacement HEPA filters are the main ongoing expense owners mention.
  • BuildPraisedOwners describe a sturdy, simple unit with an easy-to-read control panel.

Dyson Pure Cool TP4A Purifier Fan

  • 4.1 / 565 ratings

Owners rate it around 4.1 out of 5. Most like the dual fan-and-purifier job and the quiet low speeds, while some complain about airflow strength and filter costs.

What people mention
  • AirflowMixedSome owners find the breeze strong enough for a bedroom, others say it is weak for a fan.
  • NoisePraisedLow and mid speeds are described as quiet enough to sleep next to.
  • FiltrationPraisedPet owners and allergy sufferers report less dust and dander in the air.
  • Filter costCriticisedBuyers dislike how much replacement HEPA and carbon filters cost.

Questions and answers

Which is better for a large living room?
The Medify Air MA-40. It covers up to 1,793 sq ft, while the Dyson TP4A covers 112 sq ft.
Does the Dyson TP4A work as a fan?
Yes. It is a purifier and cooling tower fan with 10 speeds. The Medify MA-40 is a purifier only.
Which removes more particles?
The Medify MA-40 states 99.9% removal down to 0.1 microns with its H13 HEPA filter. The Dyson lists HEPA and carbon filtration but gives no micron figure.
Is the Medify MA-40 worth the price?
At $249.99 at shopsymtek.com as of November 7, 2026, it is the only one of the two with a stated price, and it has sold as low as $140.32 since October 31. For whole-room HEPA cleaning, that is strong value.
Which is better for a bedroom?
Either can work in a bedroom, but the Medify's sleep mode, timer and child lock make it the easier pick. The Dyson's fan is a plus on hot nights in a small room.
Which has better owner ratings?
The Medify MA-40: 4.6 out of 5 from 879 ratings, against 4.1 out of 5 from 65 ratings for the Dyson TP4A.