Your Fall Cleaning Checklist Isn't Complete Without This
You wash the windows, swap the furnace filter, and put the summer things away, and then you close the house up for six months and breathe the same air on repeat. Most fall cleaning checklists cover every surface you can see and nothing you can't. The part that gets skipped is the air itself, which is the one thing in the house that gets measurably worse the moment you stop opening windows.
Why Does Indoor Air Quality Get Worse in Fall?
Fall stacks three problems on top of each other. Ragweed and mold spores peak from late August into the first hard frost, so outdoor allergens are still arriving right when you start sealing the house against the cold. The furnace comes back on after months of sitting idle, pushing accumulated dust through the ductwork. And with the windows closed, the natural ventilation that diluted everything all summer disappears.
Your house might feel cleaner than it did in July, but it reads worse on any air quality measurement. Vacuuming and dusting move particles around. They don't remove what stays suspended in the air.
What Should Be on Your Fall Cleaning Checklist?
Start with the systems rather than the surfaces.
- Replace the furnace filter before the first cold night, vacuum the return vents, and run the heat for twenty minutes with a window cracked to clear the first burn-off.
- Wash bedding and curtains in hot water to break up the dust mite population that built up over the summer.
- Check window wells and basement corners for the damp spots where mold gets started, since those are the sources that keep reseeding the air, no matter how often you clean.
Then handle the air. Everything above reduces what enters the air. An air purifier continuously removes what is already in the air in the rooms where you spend the most hours.
How Does an Air Purifier Help With Fall Allergies?
Ragweed pollen and mold spores are small enough to stay airborne for hours and travel through the house on ordinary foot traffic. The Airmega Halo captures 99.97% of nano-sized particles down to 0.3 microns, including allergens and the household dust the furnace stirs up. Its three-in-one filter combines a pre-filter, a HEPA layer, and a deodorization carbon layer in a single cartridge with a one-year lifespan.
The MegaScan™ Particle Sensor tracks air quality continuously and detects smoke, fine dust, and allergens down to PM2.5. When ragweed counts spike, or the furnace kicks on, the unit responds to the change instead of running on a schedule that ignores it.
Can Wildfire Smoke Still Be a Problem This Time of Year?
Fire season no longer ends neatly in September. Smoke travels thousands of miles and settles into homes far from any fire line, and it arrives during the stretch when windows are closed, and you are least likely to notice the source. Carbon filtration handles odors, while the HEPA layer captures fine particulate matter, which lingers longest indoors.
Will An Air Purifier Keep You Awake?
This is the question that decides whether an air purifier gets used or unplugged by November. In Sleep Mode, the Airmega Halo drops to 17.8 dB(A), below the volume of a whisper, and an intelligent Night Sensor dims the display and shifts into that mode when the room goes dark. It also draws up to 38 watts and carries ENERGY STAR 3.0 certification, so running it throughout the heating season adds very little to the bill.
Finish Up That Fall Cleaning Checklist
Fall cleaning affects the air you breathe for the next six months. Add one purifier to the room where you spend the most time, size it to that room, and let it run. We think you’ll notice the difference pretty quickly.
Compare the full Airmega air purifier lineup to find the right fit before the season ends.
Disclaimers
1 Airmega air purifiers have been proven to trap dust, pollen, dander in the air based on KCL(Korea Conformity Laboratories) testing. They have been tested according to the Korea Air Cleaning Association standard (SPS-KACA 002-132:2022 Modified) to measure the 0.01㎛ size of particle removal rate. It was tested on maximum airflow speed in normal room temperature and humidity conditions. The performance may vary in the actual living environment of customers. Tested with Airmega Aim, 50, 100, 150, Tower AP-1216L, Mighty AP-1512HH, MightyS AP-1512HHS, 200M, Icon, 230, 240, 250, 250S, 300, 300S, 350, 400, 400S, 450, ProX
2Our HEPA filter complies with IEST-RP-CC007 standards at speed level 1 as tested by SGS (Société Générale de Surveillance). SGS's test report only reflects SGS's evaluation of the sample and does not reflect the evaluation of the batch of goods from which the sample was taken. Tested with Airmega 100, 150, 160, Mighty AP-1512HH, MightyS AP-1512HHS, 200M, 230, 240, 250, 250S, 250 Art, 300, 300S, 350, 400, 400S, 450, ProX
3 Tested by KCL(Korea Conformity Laboratories) according to JEM 1467: 2015 condition, the concentration of acetic acid was proven to be reduced up to 99.5% in 60 minutes. Results may vary depending on actual environment. Tested with Airmega 150, Mighty AP-1512HH, 200M
4 Tested by KCL(Korea Conformity Laboratories) according to SPS-KACA002-132:2022, showed result of over 99.5% removal rate of common household gases including Ammonia, Acetaldehyde, Acetic acid, Formaldehyde, Toluene, Benzene, Nitrogen dioxide (NO₂), and Sulfur dioxide (SO₂) within 30 minutes. Results may vary in different environments and not all odors or gas particles may be removed. Tested with Airmega MightyS AP-1512HHS, 250S, 300S, 400S, 350, 450
5 Test conducted using Coway Allergen filter media (5×5 cm) placed in a polyethylene bag. The allergen solution and sample were immersed in 2 mL of phosphate buffer (100 ng/mL) prior to the reaction and heat-sealed to specimen size. The reaction was maintained at 4°C for 24 hours. Nichinichi Pharmaceutical Co., Ltd. conducted the test using ELISA to measure allergen concentration. Results may vary in actual product usage environments. Tested with Airmega Mighty AP-1512HH, 200M
6 Removal rates of Ammonia (NH₃) and Hydrogen Sulfide (H₂S) were tested in a 1 m³ chamber under EL608:2023 conditions for 30 minutes. Gas Detector Tubes were used for measurement, and testing was conducted by KCL (Korea Conformity Laboratories). Results may vary in actual product usage environments. Tested with Airmega Mighty AP-1512HH, 200M
7 Reduction rates of Naphthalene, Sulfur Dioxide, and Nitrogen Dioxide were tested using the Airmega Mighty AP-1512HH in 1㎥ chamber, following JEM-1467:2015 standards. Tests were conducted by Intertek. Actual performance may vary depending on the living environment. Tested with Airmega Mighty AP-1512HH, 200M
9 Tested by KCL(Korea Conformity Laboratories) according to SPS-KACA002-132:2022. The test was conducted with Methyl mercaptan, Isovaleraldehyde, Isovaleric acid in a 1.0±0.1 m³ chamber with a test time of 60 minutes at (24±4)°C and (46±10)% Relative Humidity. A removal ratio of over 99.5% was achieved. Results may vary depending on the actual usage environment. Tested with Airmega 350, 450
10 Tested by the Guangzhou Institute of Microbiology, exposed the filter media to protein solutions for 24 hours under ISO 4333-2022 standard. The results showed strong reduction performance: >99.79% for pollen, >99.60% for dog allergen, >99.90% for cat allergen, and >99.80% for dust mites matter allergen. Actual results may vary depending on room size, airflow, and pollutant levels. Tested with Airmega 350, 450
11 Tested by KCL(Korea Conformity Laboratories) according to SPS-KACA002-132:2022. The test was conducted in a 1.0±0.1 m³ chamber for 60 minutes at (24±4)°C and (46±10)% Relative Humidity. A removal ratio of >99.5% was achieved for Formaldehyde and Toluene in 60 minutes. Results may vary depending on the actual usage environment. Tested with Airmega 350, 450
12 Tested by Intertek. The evaluation was conducted against designated test materials: Sulfur dioxide, Nitrogen dioxide, and Naphthalene. The test was performed in a sealed 1.0×1.0×1.0 m (1.0 m³) odor chamber at a test room temperature of (23±2)°C (measured between 23.6∼23.9°C) and a test room humidity of (45±5)% R.H. (measured between 40∼48)% Relative Humidity. It met the odor removal rate of ≥99.9% for Sulfur dioxide, Nitrogen dioxide, and Naphthalene. Results may vary depending on the actual usage environment. Tested with Airmega 350, 450
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