📌 I. Buying tips: a must-see for newbies! Water purifier to avoid the pit of the 5 core logic
📝 friends, I am susan, today hand in hand to teach you how to choose a water purifier!
First of all, the big principles:
1️⃣ Water quality testing should be done enough Water quality to determine the programme,
Northern hard water area (scale more) → Select RO reverse osmosis (filtration precision 0.0001 micron)
Southern soft water area (residual chlorine more) → Select ultrafiltration activated carbon combination
Northern hard water selection RO reverse osmosis (heavy metals, scale all take out), the southern water quality is good can be selected ultrafiltration (retention of minerals).
👉🏻 RO membrane filtration accuracy of 0.0001 micron, direct drinking are safe!
2️⃣ Flux to choose the right not to choose the big Flux to match the number of people in the family
1-2 people 400-600G (water 1.5L/min)
3-5 people 800-1200G (3-4L/min)
Lesson learned from the blood and tears: before the cheap bought a 400G, the whole family grabbed the water to use, and now intestines are remorseful! 😭
3-member family: 800G to start (≤8 seconds to fill a cup of water)
Multi-member family: 1000G-1400G (measured Haier Fresh Water 1400G to catch water like tap water)
3️⃣ Filter cost to be calculated
Don't be fooled by the low price! Calculate the annual core money:
👉🏻 Case: a brand advertised ‘cartridge lifetime free of change’, the results of a change of 2000 yuan! RO membrane life of ordinary models 2-3 years, high-end models 6-7 years (recognition of Dow, Toray membrane) generic filter average annual cost than the special filter element to save 50%! (A brand of dedicated cartridge 1 year 800 yuan, general models only 200)
avoid pit: do not believe that the "cartridge lifetime free of change", are IQ tax! 🚫
4️⃣ Brand after-sales should be reliable After-sales is more important than the parameters
Priority to choose a large factory, after-sales outlets covering a wide range of repair is not tossed! Is the replacement of the filter element on the doorstep? How long is the warranty period? I stepped in a pit: a miscellaneous brand filter cartridge production, maintenance to wait 3 months!
Real experience: once the cartridge alarm, maintenance master 2 hours door to door, but also teach me how to flush the RO membrane! 👨🔧
5. Look at the certification! Recognition CCLC six-star certification
National Health Commission approval + water-related products health permit
🚫 Second, avoid the pit guide: 90% of the sets of water purifiers in 2025 are here!
Second, avoid the pit guide｜Don't get caught in these sets!
❌ Filter cartridge false label life
Actual measurement method
buy back to note down the cartridge number, check the production date online case a miscellaneous brand said RO membrane can be used for 5 years, the results of 1.5 years on the TDS exceeds the standard!
❌ Wastewater ratio counterfeiting
formula
wastewater ratio = pure water ÷ wastewater (national standard ≥ 1:1) measured a nominal 3:1, the actual 1:2, the water bill can not afford to drink!
❌ Pseudo-health concepts
Magnetised water/small molecule water
Health Commission clearly stated that there is no scientific basis!
Mineral RO machine
Mineral content <1%, drink mineral water more real!
❌ Installation of hidden catnip must sign an agreement
write "not bundled cartridge / not indiscriminately charge the door fee"
tearful lessons have master installed to charge 500 yuan "debugging fee", angry I complained to 12315!
set 1: "mother and baby direct drinking" ≠ safety!
👉🏻 Truth: You must look at whether it contains scale inhibitors, heavy metal precipitation test report
Set 2: ‘Zero Chenshui’ is an IQ tax!
👉🏻 Actual test: all RO machine first cup of water TDS value is high, fresh water 2.0 technology (Haier) can reduce 80%
Set 3: ‘long-lasting RO membrane’ play word games!
👉🏻 Comparison: Midea said 5 years, Angel said 6 years, the actual life depends on the hardness of the water! Hard water in the north may shrink by 30%
Set 4: ‘Mineralisation cartridge’ is added with stones!
👉🏻 overturn scene: a brand publicity ‘strontium element increment’, test results only 0.02mg / L (not as good as eating a walnut)
set 5: ‘wastewater ratio false standard’ pit money!
👉🏻 Pit avoidance: 3:1 wastewater ratio is the bottom line, 352 flagship 4:1 is really water saving!
III. Notes on use｜Newcomers must see!
🚰 First use of three steps
rinse cartridge
connect tap water 15 minutes (do not drink directly!)
Test the water quality
Measure the first glass of water with a TDS pen (>50 directly to the after-sales service)
Setting reminders
⚠️ 5 fatal details
1. First use must be rinsed for 30 minutes, rinse the filter cartridge
Connect the tap and let the water run for 15 minutes (don't drink directly!)
I've seen a fan case: I drank the water directly without rinsing it, and it tasted like plastic!
2. test the water quality
TDS pen to measure the first cup of water (> 50 directly to find the after-sales)
3. filter cartridge replacement do not wait for the alarm! RO membrane life expectancy 1 month before the change (do not wait for the alarm!)
RO membrane life of 70% discount should be replaced (such as nominal 5 years, the actual 3.5 years)
4. Limescale? Add a pre-filter!
Northern friends must see: Intercept sediment rust, RO membrane life extension of 2 years
5. After stopping the water first drain before drinking!
Water pipe storage water may contain rust, I measured the water stop 8 hours TDS value soared to 500 +
6. Regularly check for leaks!
Water hammer effect may burst the pipe, it is recommended to install a leakage alarm (spend a small fortune to save your life)!
⚠️ Daily Maintenance Highlights
Monthly
Flush the water storage tank (to prevent bacterial growth)
Quarterly
Check the inlet water pressure (<0.1MPa to add a booster pump)
Yearly
Change the rear activated carbon (to prevent odour)
Water purifier is not metaphysics! Remember the three principles:
water quality match, cartridge transparency, after-sales reliable.
Avoid pit mnemonic: do not look at the advertisement to see the approval, do not spell parameters spell cost, do not buy cheap miscellaneous brand!
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