Gen 8 Digital 40 lit MINI

$1,393.00$1,543.00 Inc. GST

The revolutionary Gen 8 Digital Water Heater is your key to a premium hot water experience.

3X More Hot Water. Patented heating technology delivers extended, indulgent showers.

Instant Hot Water. Experience an uninterrupted stream of hot water in just 5 seconds.

Automated. Hot water boost activated automatically, compared to Gen 6’s manual activation.

Energy Saver. 24 hours of hot water without reheating, outperforms Gen 1’s 12-hour heat retention.


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Gen 8 HDB, BTO
Gen 8, HDB, BTO yard
Gen 8, Condo

Gen 8 Reviews

Purchased an AOS Gen 8 Digital Heater – and have been using it since December 2021. It’s a massive change from the instant water heaters we used to have. 

Water delivery is consistently hot. What is most impressive is the water tank’s ability to retain heat. Even if the power to the heater is turned off at 10pm, the water is still hot at 9am the next day. 

Arthur Yong
Google Review

I got mini gen 8 and it’s the best thing ever. I would highly recommend if you like instant and consistent hot water within seconds!

Their service is good and very responsive to my questions for any problems that I have with their products.

I also got their water filter as well so far no problems with it. I love the convenience without having to boil hot water plus it’s filtered water.

YH Wang
Google Review

I installed the AOS storage heater Gen 8 mini earlier this year in Feb. It has been 6 months. No regrets at all. We were use to instant water heaters at our old place but as we wanted rain shower in both our toilets for our new flat, we needed storage heaters. Pricing may seems higher than the other models.

But looking at operation, performance, reliability, aesthetically so far, it is a decision that we are happy with. Installers are well qualified and trained and professional. Safe installation is paramount, can’t muck around with that for some loose savings.

Edmund Lim
Google Review

Gen 8 FAQ

How do I use the heater?
The panel only needs to be set up once, after the heater is installed. Follow this link to the control panel guide. After initial set up, there is no need to always adjust the panel. You can power on and off at the main heater switch. 
Recommended Temperature

Showers: 50ºC
Bathtubs: 65ºC

Timers and AES

For Singapore’s climate, disable timers and AES. Why?


Do not set below 50ºC. Why?

The remote control is for Gen 8 heaters installed above false ceilings. Use the remote control to program your water heater.
After the initial set up, there is no need to always adjust the panel or use the remote control. You can power on and off at the main heater switch outside your bathroom. 

You should perform a maintenance every 3 years. This comes with a tank flushing to clear out any sediments in the tank, keeping your shower water clean. 

Keeping a clean tank also prolongs the life of your water heater. 

AES is an automatic timer function. 

Due to Singapore’s warmer climate, AES has been known to restrict the heater’s heating cycle. You are advised to disable the AES function.

At AOS Bath, we’ve got you covered with the most extended onsite warranty for water heaters in Singapore.

And here’s the best part—it’s a complete onsite warranty with no extra costs from your pocket. This means you’re fully covered for three years, including transport, parts, and labor.


Mini Heater wiring specification.
Mini Heater wall mount specification and illustration.
Power (kW)4.0
Voltage/frequency (V/Hz)220 / 50
Temperature range (°C)35 – 75 ± 5
Rated water pressure (MPa)0.8
Waterproof gradeIPX4
Capacity (litres)40
Length (mm)880
Width (mm)340
Height (mm)350
Weight (kg)21