Choosing the Right Water Heater? Start with Our Top 3 Bestsellers
Shopping for a water heater isn’t exactly thrilling. But when your comfort, utility bills, and long-term peace of mind are all on the line, it pays to make the right choice.
At AOS Bath, we’ve helped thousands of homeowners find their perfect match. If you're wondering which models truly stand the test of time, look no further. We’re breaking down the top 3 best-selling heaters iight here!
We'll cover what makes them so popular, who they're perfect for, and why home owners in Singapore keep coming back for more.
1. Gen 6 Digital Water Heater: Supercharged Speed Heating
Topping the charts is our Gen 6 Digital Water Heater. If you hate wasting time waiting for hot water, this one is for you.
Save Energy: The built-in control panel lets you fine-tune your water temperature. Lowering to 50º instead of the usual 70ºC helps you save up to 10% energy.
The panel also has a built-in timer so you can adjust your heater to run when you need it to. Never again will you have to endure cold showers in the morning.


Get hot water in 2 min: My personal favourite feature? The Gen 6 heats up in just 2 minutes!!
Compare this with the usual 20 min heating time for a normal storage heater. You get piping hot showers, fast!
This speed heat feature is probably what makes it the most popular choice for HDB and Condos.
Double Your Hot Water!
The trade secret 'multiple mode' activates a patented hot water feature.
This doubles the hot water delivery, making sure you never run out halfway!
That's up to four back to back showers with zero complaints.
If you have long hair, thank me later. No more cold surprises mid-shampoo for you.

Pros
Fast Hot Water
• no wasted time, no waiting
Built in Timer
• no need to wake up early to preheat shower.
Multiple back to back showers
• great for morning rush hours
Cons
Wired Control Panel
• can't be concealed for HDB, need to use white casing.
Best for:
• Back to back showers
• Can produce extra hot water if needed
Been using another brand of heater for over 5 years and always felt that the insulator is not working well, the heated water always cools off by morning time. After using AOS, there is definitely difference in insulation and the water remains warm even 24 hours later!
The digital display allows temperature setting to lower and eventually saving electricity. Everything is great!
The digital display allows temperature setting to lower and eventually saving electricity. Everything is great!

Katherine Lim
Google review
I am very satisfied with the Gen6 40L storage heater, as the water pressure is not affected during shower and the heat retention is very long as i tested by turning off the power (roughly 10 hours). The instant heat function is much needed and is very useful.

Fareez Farhan
Google review
2. Heat Pumps: The Energy Saving Powerhouse
Heat pumps are the undisputed Kings of Energy Efficiency. This is the greenest heater in our lineup and even more energy saving than solar heaters.
Save $600 on heating every year. Heat pumps pull in Singapore’s warm, ambient air and converts it into energy to heat your water. It runs on less than 75% of energy compared to a normal heater.


Climate Vouchers help you save an Extra $400. Yes, you can use your NEA issued Climate Vouchers on this cutting edge technology.
Because Singapore is hot all year round, heat pumps run at max efficiency here. They are a solid win-win for your wallet and the planet.
Incredibly Long Lifespan: When you invest in a high end technology like this, you want to know it has durability to match.
This is where AO Smith delivers. As the #1 water heater brand in USA, AOSmith’s legendary Blue Diamond tanks have a proven lifespan of over 10 years. In fact, the Singapore record stands at 25 years. Now that’s staying power!


Weatherproof Version for Landed Homes:
If you live in a landed property, even better. You can install the unit at the roof, freeing up precious indoor space. Clean, efficient, and beautifully out of the way!
With a central system, you get lower power load and hassle free maintenance. More on central heaters here.
Pros
80% Lower Running Cost
• Than a storage heater. Uses free, renewable air heat available all year round.
High Water Pressure & Temp
• Good for bathtubs and rain showers
Cons
Large size
• Need to make room for a tank and a compressor.
High upfront cost
• Cutting edge technology doesn't come cheap.
Best for:
• Large families with over 4 members
• Bathtubs and rain showers
After experiencing multiple cold showers with our previous water heater, we decided that it'll be a priority for us to invest in a good water heater for our new home.
After extensive research, we decided on A.O Smith as it was a reputable brand from the US with a long history in manufacturing water heaters. When we headed down to the showroom, we were impressed by the service and knowledge of the staff.
After extensive research, we decided on A.O Smith as it was a reputable brand from the US with a long history in manufacturing water heaters. When we headed down to the showroom, we were impressed by the service and knowledge of the staff.

Louis W
Google review
Alhamdulillah! Kalam and Sumon did an amazing job, and we were really hoping against hope that, insya'Allah, the heat pump would fit!
I'm excited for more climate-friendly and comfortable showers! No more dealing with intermittent hot water or waiting for turns like we did with our gas heater.. After three years of waiting, this upgrade feels like a blessing!
I'm excited for more climate-friendly and comfortable showers! No more dealing with intermittent hot water or waiting for turns like we did with our gas heater.. After three years of waiting, this upgrade feels like a blessing!

Jaclyn Chen
Google review
3. BathBox, Sleek and Modern
Clean Lines: This sleek and modern water heater is built for tight spaces without compromising performance.
Space Saver: Fantastic for BTOs because it doesn’t block your door or your light, and fits beautifully into any minimalist design.


Fast Heating: Don’t let its size fool you! The BathBox delivers hot water in just a few seconds.
It is Energy Saving too! With zero heat loss, the BathBox is 30% more energy saving than a regular storage heater. Take a long shower, guilt free!
Pros
30% Lower Running Cost
Compared to a storage heater. You pay less every month.
Subtle Design
Fits perfectly, even in smallest spaces.
Cons
One Shower at a Time
Lower water pressure
Only hand showers
If you want a rain shower, go for the max water pressure option, storage tanks.
Best for:
• Small families around 2 members
• People who don't take very hot showers
Just installed a tankless BathBox at my owner's house. Thanks to the installer, Shamemul, for his patience and cooperation during the installation. The tank looks sleek and space-saving compared to the other heater brands.

Sheireen Sim
Google review
Moez came to help us replace our faulty storage heater with the AOS bath box! So slim and sleek looking. Very pleased with the hot water and pressure in both our toilets

혜민•Jac
Google review