Medify MA-40

Specs only matter in context. Here's where the Medify MA-40 genuinely fits — and the trade-offs worth knowing before you buy. If you're deciding between this model and similar options, focus on the fit cards below: they highlight the specific use cases where this purifier shines and the situations where it falls short.

• Keep in mindAudible in a quiet bedroomIts quietest setting is 46 dB — above the 30 dB most light sleepers need. Fine for living rooms and offices; light sleepers should plan on a hallway spot or a timer.
• Good fitOdors, pets, and smokeAn activated carbon stage traps the gases a particle filter can't — cooking smells, litter-box odor, VOCs, and wildfire smoke gases.
• Good fitAllergy and asthma householdsA True HEPA filter captures 99.97% of particles at 0.3 microns — pollen, dander, dust mite debris, and most smoke. Run it continuously for real symptom relief.
• Keep in mindHigh speed reaches 66 dBThat's conversation volume. CADR is measured at max speed, so on quieter settings the effective CADR drops — buy the headroom and run it on medium.
• Keep in mindFilters cost $12.00 a monthReplacement filters run $59.99 every 5 months — above average. Factor that into the price comparison before judging the sticker.

These alternatives share key traits with the Medify MA-40 — same brand family or similar room coverage. Compare their scores, owner sentiment, and specs side by side to see which fits your specific needs better.

• Medify$594.99Medify MA-1123.3/5★★★★★3.3 out of 5 stars(3)iAHAM VerifideEnergy StarCARBSleep friendly2500 sq ft“I have multiple Medify purifiers (MA-112 and MA-40). I have run them 24/7 365 for about 4 years now.”
• Medify$148.99Medify MA-254.0/5★★★★★4.0 out of 5 stars(3)iEnergy StarCARBAllergy reliefCADR & airflow500 sq ft“The Medify Air MA-25 has a larger coverage area (up to 1,000 sq. ft.) and a higher CADR of 230, making it great for slightly bigger rooms.”
• Mila$408Mila Air Purifier2.4/5★★★★★2.4 out of 5 stars(0)iEnergy StarCARB1000 sq ft
• Rabbit Air$619.95Rabbit Air MinusA21.9/5★★★★★1.9 out of 5 stars(0)iAHAM VerifideEnergy Star815 sq ft

Quick answers to the questions shoppers most often ask before buying. If your question isn't covered here, check the full specifications below or compare against similar models above.

• What size room can the Medify MA-40 handle?It's rated for rooms up to 840 sq ft.
• Is the Medify MA-40 quiet enough for a bedroom?Borderline. Its quietest setting is 46 dB, above the 30 dB target for light sleepers — it suits living rooms and offices better than bedside duty.
• What does the Medify MA-40 cost to own?Filters run $59.99 every 5 months — about $12.00 a month. Over three years that's $432 in filters on top of the $250 sticker, a $682 total.
• Can the Medify MA-40 handle odors and smoke?Yes — its activated carbon stage traps odor and VOC gases while the True HEPA H13/H14 filter handles the particles, which is the combination smoke and pet households need.

price usdiThe listed US price when we indexed this model. Prices move — check the retailer for today's number.

249.99

dimensions

10.5 x 11 x 22 in

energy stariEnergy Star purifiers use roughly 40% less electricity than standard units — meaningful for something that runs 24/7.Certifications guide →

True

filter typeiThe particle filter grade. True HEPA captures 99.97% of particles at 0.3 microns; 'HEPA-type' has no standardized efficiency.Filter guide →

True HEPA H13/H14

model numberiThe manufacturer's exact model identifier — handy when comparing listings across retailers.

MA-40

noise db maxiThe loudest fan setting, in decibels. 60 dB is normal conversation; above that you'll hear it across the room.Noise guide →

66

noise db miniThe quietest fan setting, in decibels. 20 dB is a whisper, 40 dB a quiet library — for bedrooms, look for under 30 dB here.Noise guide →

46

aham verifiediAHAM Verifide means CADR and room-size claims were verified in an independent lab, not self-reported.Certifications guide →

True

carb certifiediCARB certification means ozone emissions stay below California's strict safety threshold.Certifications guide →

True

room coverage sqftiThe largest room, in square feet, this purifier can effectively clean — assuming standard 8-foot ceilings and 4–5 air changes per hour.Room size guide →

840

has activated carboniActivated carbon traps gases, odors, and VOCs that HEPA filters can't catch — essential for smoke, cooking smells, and pet odor.Filter guide →

True

filter lifespan monthsiHow long the manufacturer rates the filter to last under normal use. Running in smoky or dusty homes shortens it.Ownership cost guide →

5

filter replacement usdiWhat a genuine replacement filter costs. Divide by the lifespan to get the real monthly cost of ownership.Ownership cost guide →

59.99