6 Facts To Consider When Buying A Water Heater

1. Water pressure

Water pressure is crucial in determining a suitable heater for your home. Low-pressure heaters include electric instant, gas, and multipoint models. Meanwhile, high-pressure heaters consist of electric storage, heat pump, and solar.

Note that water pressure in Singapore fluctuates based on the area’s elevation. The Water Supply Department ensures a minimum water pressure for HDB but there are many other high rise and privately owned units that don’t fall under their purview.

If your water pressure is below 2-3 bars, opt for a high-pressure heater. This will allow you a more comfortable shower experience.

2. Energy efficiency

Solar and heat pump water heaters are energy-efficient. They both use renewable energy sources. Solar water heaters absorb sunlight and convert it to heat. Meanwhile, heat pumps get heat from the surrounding air to warm water.

Heat pumps are a highly efficient option for water heating in Singapore. They have an 80% heating efficiency compared to solar water heaters, which offer only 50% efficiency. For Singapore’s climate, definitely choose heat pumps for greater money-value.

A family of 4 can save up to $700 each year with a heat pump. They consume much less energy than traditional electric or gas water heaters.

3. Family’s usage patterns

Your household’s usage patterns are also crucial in selecting a water heater. For instance, if everyone in the family needs hot water all at once, opt for a heater that can keep up. This applies during peak hours like the morning rush. Size your heater correctly, and you never have to wait!

If you are planning to get a bathtub, choose a high performing digital heater which can multiply your hot water volume.

For most families of up to 4 members, the AOS Bath Gen 6 Digital Water Heater is one of the most popular choices. With its speed heating and hot water multiplier technologies, you can enjoy the full benefits of your rain shower!

4. Space requirements

When considering which water heater to buy, keep in mind the space available in your home. Don’t commit until you are sure there is sufficient space to install the water heater. Take measurements and get the help of a heater specialist.

If you are replacing an old heater, choose a similar-sized replacement to fit within the existing space and configuration.

5. Pricing and budget

The water heater is expected to last you over 10 years, so invest wisely. In Singapore, the average heater’s lifespan is only 5 years! So while it is true that you can get a super cheap heater online, it is no longer that affordable if you have to replace it too often.

Never scrimp on installation. You want your heaters to be installed by a water heater specialist at the very least. All major mishaps regarding water heaters in Singapore have occurred not due to product failure, but because of poor installation. Get a qualified installer for the highest wattage item in your household and keep your family safe.

6. After-sales service

Prompt and reliable support makes a difference after buying your water heater. Imagine a situation where your hot water suddenly stops working, leaving kids or elderly family members in the lurch? Quick after-sales service can swiftly restore the hot water supply.

At AOS Bath, our sales and service hotline are the same. This means you can immediately speak to our specialists to service your water heater.

Some suppliers can take over a week to respond to service requests, which is inconvenient. But our specialists are ready to address issues with your unit so you can get it up and running in no time.


A water heater is a long-term investment that requires careful planning. We hope these points can help you make an informed decision.


How often should I service my water heater?

You should perform a tank flushing once every 3 years. A safety check is also important to ensure your heater is working in good condition

We recommend hiring a professional. Do not try to install the heater on your own unless you are a trained professional. Incorrect installations usually render your heater warranty void.

Due to hygiene concerns, trading in your old water heater is not an option. In addition, the condition and maintenance history of a pre-owned heater is uncertain. This makes it difficult to assess its remaining lifespan and reliability. It is better to dispose of your old water heater and invest in a new one.

Yes. Do remember to engage your designer or contractor to run the necessary drainage points, pipes and power source to your desired location.

AOS Bath Team

AOS Bath Team