Uner normal conditions how often does the filter need to be replaced?

I have had the 250 for a few months and a slightly different model, 2 Airmega 100 for about a year. These allow you to change the charcoal filter. I vacuum the screen and filters monthly. With these cleanings and open windows with maybe 2 weeks of A/C in summer I would say the filters last a year. No wild fire smoke, a little second hand smoke from another apartment maybe once a night for 15 minutes in the winter in 1 room. To run at an acceptable sound level 24/7 over many days in heavy smoke conditions or summer I recommend getting MORE capacity than you need if you do anticipate wild fire or other smoke. I'm in a 700 sq ft apt divided into 1 large and one smaller area. I have the 250 and a100 for the larger section, and a 250 for the smaller section in anticipation of wildfire smoke years like 2020 when we had this for a few weeks. In summer I run at least one at level 2 all the time. I wouldn't be able to stand hearing them on setting 3 for more than a quick clear out, but on setting 2 they are okay should keep the air clean enough. I bought them slowly over a year's time. They do seem to also act as dehumidifiers - which may or may not be helpful depending on conditions where you live and time of year.

Are the Airmega 250 filters the same as the Airmega 400 filters, i.e., interchangeable?

No, they are not interchangeable! The 250 & 400 filters are different sizes AND the 400 filters are sold in sets of two, because the 400/400S requires two filters (one on each side), whereas the 250/250S requires only one filter.

No, it goes in regular trash in my city.

Coway Airmega 250 250s Air Purifier Replacement Filter Set Max

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Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌬️ Breathe Brilliance: Elevate your air, elevate your life

TRUSTED QUALITY - Genuine Coway filter engineered for premium durability and efficiency
ODOR VOC DEFENSE - Eliminates 99%+ of odors from pets, smoke, and chemicals
BROAD COVERAGE AREA - Purifies spaces up to 930 sq ft—perfect for your home or office
DUAL ACTION PURIFICATION - Combines Green True HEPA & Activated Carbon for unmatched air clarity
LONG LASTING PERFORMANCE - Enjoy a full year of fresh air without filter swaps

The Coway Airmega 250/250S Replacement Filter Set features Max2 technology combining Green True HEPA and Activated Carbon filters to remove 99.9% of airborne particles and 99% of odors and VOCs. Designed for spaces up to 930 sq ft, these filters offer a robust 12-month lifespan, ensuring sustained premium air purification for your home or workspace.

Specifications

ASIN	B092XCDTWC
Best Sellers Rank	#166,919 in Kitchen ( See Top 100 in Kitchen ) #936 in Air Purifier Filters
Brand	Coway
Brand Name	Coway
Color	Black
Colour	Black
Contaminant Filtration Capability	Odors, Pet Dander, Pollen, Volatile Organic Compounds (VOCs)
Control Method	Push Button
Control method	Push Button
Controller Type	Button Control
Customer Reviews	4.6 out of 5 stars 243 Reviews
EU Spare Part Availability Duration	12 Months
Filter Class	HEPA and Activated Carbon
Filter Type	HEPA
Floor Area	930 Square Feet
Item Dimensions D x W x H	39D x 45W x 47H millimeters
Item Type Name	HEPA Replacement Filter Parts for Airmega 250/S
Item Weight	3.15 Pounds
Item weight	3.15 Pounds
Manufacturer	Coway
Model Number	AP-1720-FP
Number of Packs	1
Part Number	AP-1720-FP
Particle Retention Size	0.1
Power Source	Corded Electric
Power source	Corded Electric
Product dimensions	39D x 45W x 47H millimeters
UPC	826439000431
Unit Count	2 Count

Reviews

N**.

Worth the premium, extremely long service life.

Wouldn't say I look forward to buying these filters due to the cost, that being said these genuine units last a looooong time and I would not want to cheap out. These are as good as any high-end 3m filter in terms of construction and have a huge amount of surface area. The activated carbon still seems to work after running 24/7 for a year or more.

20.07.2025

J**L

QUE FILTRE MUY BIEN EL AMBIENTE

LLEGO MUY RAPIDO EL REPUESTO

8.06.2023

J**J

Good quality

Works well, great filter. Easy to clean.

12.01.2026

L**S

Great filter

It is pricey however it made my home smell clean. The quality is great. It fit right in with no problem.

12.12.2024

A**R

Easy to install

build quality to last for long time. easy to install

10.05.2025

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₨96101

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Sri Lanka.

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