AOS Reverse Osmosis Drinking Water Filter
RO is a trusted, science-backed water filter. It removes fine particles to deliver clean, pure water for your home.
What is Reverse Osmosis (RO)?
Most water dispensers in Singapore are only filter to 95%. For a higher level of filtration, you must go for a specialised water filter called reverse osmosis or RO.
RO filters get rid of smaller and finer sand. This is a scientifically proven method, and these higher technology filters cost more. But you get 99% of sediments removed.
AOS RO Filters Save 75% instead of Wasting 75%
AOS RO filter holds the patent for highest water saved.
This gives you 99% pure water while only wasting 1 glass of water.
This makes the AOS RO filter the most efficient in the world.
In addition, a MAX4 RO filter can last up to 4 times longer than a regular RO filter. This means that not only do you save more water, you also save more money.
I bought an under-sink water filter from them. After piping and electrical works are done, you can basically forget that the unit is under your sink. There's just a small elegant tap that comes out of your sink counter.
Overall an excellent company with quality products and quality service. Definitely would recommend to friends.
Jacob Yao
Google review
Dispensers Focus on Different Temperature. RO Filters Focus on Pure Water.
Many “filters” sold in Singapore are actually dispensers, not true filters.
What’s the difference?
Dispensers focus on water output giving you hot, cold or warm water.
They cost more to run because their wattage is higher. They filter water 95% clean.
RO filters focus on giving you pure water.
They cost less to run because the wattage is low.
They filter water 99% clean.
RO Filters are Bigger and Heavy Duty.
Dispenser filters are small, less than half the size of an RO filter. There is only one small filter in a dispenser, about 18 x 7cm.
In an RO system, there are at least 3 filters about 36 x 10cm. That is because in RO filters, filtration is the priority.
To make a choice, decide on what is important for your family: different temperatures or pure water.
RO Filters: a Powerful and Space-Saving Cleanser.
Unlike dispensers, RO filters go under the sink. They don't take up precious countertop space.
Water passes through 3 high-precision filters and all this work happens under your sink. You can easily get filtered water from a slim tap at your sink.
Tankless vs. Tank RO Filters
Tankless (MAX4)
• advanced tankless design
• takes up less space.
• DIY filter cartridge (less waste, use till 0%)
Tank (AR75)
• 3-lit built-in tank
• No DIY filter change, call service hotline.
DIY-Changes Save You Time
Change your filters at home, on your own. This will save you precious time. No need to make a service appointment.
Each filter has a microchip that notes your water usage. Lower use means longer lifespan. You can max out each filter till end of its life. Change only when it is at 0%!
Follow this full video guide:
Get Zero Waste: Change at Exactly 0% Life
Use the 3-light indicator. Wait till it hits 0% and change only then.
This is an advantage over dispensers. Many water dispensers don't track usage as they are not specialised. Instead, they use timers.
At a fixed 6 months or 1 year, they start to beep regardless of your usage. That is not an accurate measure of filter life.
Easy-View Light Prompt
There are filter change light prompts conveniently located at the tap. This is useful for you.
You don't have to keep opening your sink cabinet door to check if your RO filter is doing fine. You can tell from the tap.
Saw rave reviews and took the plunge. Bought the 40L Digital Water Heater, pre-filter and RO Water Filter. The water heater works like a charm, fuss free and quick to heat up. The technicians are professional and installed the water piping for the filters neatly and did a good job. Highly recommended!
Pablo Pabla
Google review
AO Smith's professionalism and their high quality products really makes my renovation much much easier..
Fast forward 6 months later, the water heater and water filter works well without any issues. Would recommend highly to anyone looking for water heaters or water filters!
Hwee Li Wang
Google review
Before (top) and after (bottom) of the filters after use.
Another Benefit of the Water Filters: Self Cleaning
The MAX4 RO filter has an automatic self cleaning feature. Great for busy families who want to let a system run on its own.
Self-cleaning takes place after an electric reset, or for every half an hour of continuous use. Your water filter stays clean, always ready for next person's use.
Get the Tank Filter if you are Looking for a No Frills RO Water Filter.
Small family of about 4? Office use? We love the Tank RO system. In fact, this is the model we use in our own office pantry. We get great flow rate, zero wait times, and wonderful water.
If this sounds like what you need at home too, then this no frills model is good enough for you.
RO Water Doesn't Contain Essential Minerals.. How Does This Affect Us?
Here's what you need to know.
While it is true that RO has less minerals than tap water, we get our minerals from food, not water.
By consuming more leafy greens, fruits, and nuts, we can already get the necessary nutrients we need.
PUB Uses Reverse Osmosis too
PUB has been known to use Reverse Osmosis to treat our water in Singapore.
It is an expensive process which requires a lot of investment. Clean and safe water for Singapore is certainly a top priority.
Resources
DIY Cartridge Change
After changing filter 1, 2 or 3, let water run from the filter tap for 1 min.
Caution
Do not let filter tap run over 20 min or this will cause ‘leak protection’ to be activated and system will shut down.
Manual
Installation diagram
Product Specifications
| Model | Tankless | Tank |
|---|---|---|
|
|
|
|
|
Model |
MAX4 |
AR75 |
|
Maintenance |
DIY $250/year |
Non-DIY $280/year |
|
Size (mm) |
140 (W) x 430 (H) x 445 (D) |
260 (W) x 420 (H) x 410 (D) |
|
Power (W) |
107 |
25 |
|
Voltage, Hz |
220V, 50-60Hz |
220V, 50-60Hz |
|
Filtration rate |
1800 ml/min |
196 ml/min |
|
Water supply pressure (MPa) |
0.10 – 0.35 |
0.10 – 0.35 |
|
Weight (kg) |
15.5 |
11.0 |
|
Warranty |
1 year |
1 year |
