🔍 Eleven's Air Purifier Guide to Avoiding Pitfalls (900+ words of dry goods you must memorize before buying!) Handy to teach you how to pick a life-saving device in 2025!
Friends Don't be crippled by the business “99% of aldehyde removal” “silent black technology” advertising words! Air purifier parameters are as many as they are. Buying the wrong one is more heartbreaking than buying the expensive one! Remember these life and death line ⬇️
🌫️ 1 CADR value! Not the higher the better, but it must meet the standard!
Recognize the double CADR!
Ask yourself before you buy: do you need to get rid of PM2.5 (solid pollutants) or formaldehyde (gaseous pollutants) more?In 2025, conscientious models will be labeled with a double CADR value! To give a chestnut 🌰: small bedroom with solid CADR ≥ 300m ³ / h gaseous CADR ≥ 150m ³ / h enough living room space at least solid ≥ 500 gaseous ≥ 300!
What is CADR value?
CADR (Clean Air Delivery Rate) that is “clean air delivery rate”, is a key indicator to measure the core performance of the air purifier. It indicates the unit time (usually 1 hour) machine can filter and output of clean air volume (unit of cubic meters / hour, m'/h). Simple understanding: the higher the CADR value, the higher the purification efficiency of the air purifier, the larger the applicable area.
Classification of CADR value
Particulate CADR:Purification efficiency for solid pollutants such as PM2.5, dust, pollen and pet dander. Give priority to this value when choosing. Formaldehyde CADR: for formaldehyde, TVOC (volatile organic compounds) and other gaseous pollutants purification efficiency. Newly renovated homes or formaldehyde sensitive people need to focus on reference.
CADR value size selection of air purification?
Calculate the applicable area formula: applicable area (㎡) = CADR (m ° / h) x 0.1 ~ 0.15 Example: If the particulate matter CADR for 400m'/h, the applicable area of about 40 ~ 60m'. Suggestion: choose the CADR value slightly larger than the actual room area of the model, to avoid “small horse-drawn cart”.
Be wary of false labels! Look at the test report! Many labeled manufacturers mark a scary CADR results in the actual measurement of 70% discount! Directly find customer service to the third-party test report recognized “Shanghai Environmental Protection Product Quality Supervision and Inspection Station” such authority seal
Applicable area = CADR × 0.12! 50 square meters of living room needs 600m³/h CADR buy small equal to take a toothbrush to wash the floor!
🛡️ 2 CCM value! The hidden big brother that determines filter life!
Both CCMs are important to look at! This indicator represents the filter “drug ceiling” The national standard is the highest grade of solid CCM ≥ P4 gaseous CCM ≥ F4! But 2025 rolled out a new height - solid CCM> 60,000mg (P4 5 times!) Gaseous CCM＞15000mg (4 times of F4!) that is considered to be the true conscience.
1. What is CCM value?
CCM (Cumulate Clean Mass) refers to the total mass of pollutants (unit: milligram, mg) that the filter can cumulatively clean before it fails. The higher the value, the longer the filter life and the lower the replacement frequency. The Chinese standard (GB/T18801-2015) divides CCM into two categories: particulate matter (PM2.5, etc.) and formaldehyde, which are indicated by P and F grades respectively, with the top ones being P4 and F4.
2.The grading standard of CCM of particulate matter
CCM of particulate matter (P1-P4)
P1:3000~5000mg P2:5000~8000mg P3:8000~12000mg P4:≥12000mg (superior)
3. Formaldehyde CCM grading standards3
Formaldehyde CCM (F1-F4)
F1:300~600mg F2:600~1000mgF3:1000~1500mg F4:≥1500mg(good)
The higher the value, the more money you save! CCM low filter two months to change once a year can eat you a cell phone! High-end machine filter with a year not change is really save money
calculate the cost of consumables! Check the price of the filter before you buy the machine! An international brand sells you 3999 machines, the filter dares to sell 1099/piece, this is the real leek harvester 💸!
⚔️ 3 Aldehyde Removal Technologies! Adsorption vs. decomposition I'm with the latter! Activated charcoal adsorption: basic, but vomiting! If you rely solely on activated carbon filters to absorb formaldehyde, you will “vomit” when the temperature gets high! Decomposition technology recognizes these three!
▶️ catalytic decomposition: formaldehyde into water + carbon dioxide mother and baby families preferred
▶️ ultraviolet photolysis: high-energy ultraviolet light to break the molecular chain of formaldehyde hospitals elimination of homologous technology
Step 1 rapid capture of aldehyde nano-micropore structure to quickly capture the precise locking of formaldehyde, high efficiency and non-desorption of
Step 2 complete deformalization modified amino acid catalyst, rapid decomposition of formaldehyde into water and harmless substances, no secondary pollution
▶️ chemicals (Honeywell P22W): filter containing amino compounds active capture ): The filter contains amino compounds that actively trap formaldehyde. Suitable for new house blitz
See the decomposition certification! Recognize the formaldehyde removal rate of “wide micro-measurement” “Chinese Academy of Sciences” and other institutions of formaldehyde removal rate of long-lasting report Do not believe in 24 hours of experimental data!
🦠 4 Sterilization! The immediate need in the post epidemic era! Medical grade certification is hard currency! Ordinary “99% sterilization” is the same as not saying! Recognize the record of the consumer (or medical grade certification) test report to see the inactivation rate of specific strains of influenza A / syncytial virus, etc.
Beware of ozone assassins! Some Negative Ion/Ultraviolet models secretly emit ozone, which smells like “rainy day” but actually hurts your lungs! Choose a non-ozone-emitting certified model. Pet families should keep an eye on these two items ⬇️
✅ Anti-allergy certified - specializing in cat dander allergy
✅ Sterilization of living things - dare to do experiments on mice to be the real thing!
🔇 5 Noise & Power Consumption! It's about wallet and sleep!
Sleeping gear ≤30dB is the bottom line! Put it on the bedside to be like the lowest fan “white noise” Measured more than 35dB quickly return it can wake you up 3 times in the night!
Energy saving look at the energy efficiency labeling! 24 hours on must choose a first-class energy efficiency! Do some math: a machine power 80W (three energy-efficiency) to open a year of electricity costs 700 + first-class energy-efficiency 40W save an electric fan!
Inverter motor is smarter! Automatically detect the air becomes dirty before accelerating than the fixed-frequency machine to save 30% of electricity noise fluctuations are also smaller.
1. Aldehyde just need to see decomposition technology! Relying on activated carbon adsorption is 2023 old calendar catalytic decomposition/photolysis/chemical agent three choose one!
2. Families with children stare at the death of medical certification! Ordinary sterilization report is not as good as a piece of A4 paper, medical grade sterilization is the real armor!
3. Late stage of lazy cancer to choose no consumables! IAM zeolite carousel to help you say goodbye to the nightmare of changing filters (but accept the slight noise)
4. calculate the cost of filters! The kind of annual consumables 3000 + before buying ask yourself wallet to carry not to carry
5. small room do not buy the big guy! Some large air purifiers in the bedroom are like a truck in an alley - you can't turn the corner!
This air purifier thing is a life saver when used correctly and an electric tiger when used incorrectly Don't pay the IQ tax in 2025! There is what entangled Comment area are said out, susan online and you chat! Feel useful please turn to the family , after all, breathing safety is the top priority! 🔥
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