Convert: Gas to Storage Heaters

Are you planning to fix a storage heater in place of your existing gas heater? Use this 5-step guide to help you out.


1. Provide details of existing gas heater

Send a photo of your gas heater to us. Instead of just taking a close up of the heater, include also the space around it. Useful photos include, the top of aircon ledge, space available at aircon ledge, yard or balcony. This will be helpful for determining the position of your new storage heater.

Gas heaters are usually installed outdoors in case there is a gas leak. Storage heaters should be installed indoors or in a sheltered area as they are electrical appliances and are not weatherproof.

Other bits of helpful information you can provide:
– Is there a dedicated 15A switch available nearby?
– Have other neighbours done similar installations?
– Does your building management approve of the works?


2. Contact your building management for approval

Once you have confirmed a location for the new storage heater, contact MCST for approval. You may be asked to fill in an application for renovation works. HDB owners usually skip this step as their heaters are installed indoors.

HDB: The town council does not allow heaters to be fixed at the air con ledge.
Private: Most MCST will approve the changes, but it is possible to get rejected. Please seek approval before proceeding.

3. Terminate gas supply and remove gas heater (optional)

Updated as of  (5/3/2020): If you are already living on the premises, it will be more convenient to shut off the gas supply from the lever. If you can find another space for the storage heater, there is no need to remove the existing gas heater.

However, if you want to proceed with the termination of gas supply and heater, here are some things to expect:

  • Termination fees range from $40 to $100 to remove existing heater and shut off the gas point. Confirm that the team going up to your house will do both, some only do one.
  • Several homeowners told us that Citygas is unwilling to terminate the supply and are asking for many reasons, personal particulars and owner’s IC. This is similar to the termination of a mobile phone line.. It is not necessary to give out your life story and IC number.
  • Many homeowners also reported Citygas saying they cannot do the uninstallation and that homeowners should go and find their own uninstaller. Please do not perform an unauthorized uninstallation. It is safer to get contacts from Citygas directly. They should provide them on request.


4. Arrange to install the storage heater

If you choose to skip the termination of gas supply and removal of gas heater, you may skip step 3 in the diagram below.

For those who need to contact Citygas: Once you have a removal appointment, you may proceed to arrange for the installation of your new heater. Try to give a 2 working day buffer for any uninstallation or installations. If you plan things right, the disconnection of gas can be done in the morning and the installation of the new heater on the afternoon of the same day (2pm onwards). This will minimize hot water downtime.


5. Summary of work required and estimated costs

For a brief recap, see below table for an overview of costs and works to expect.


Works Citygas AOS
Terminate gas Required 40 – 60
Disconnect heater Required 40 – 100
Install storage heater Required 130 – 160
Run water pipe Optional 0 – 150
Run power source Optional 150

Note on control panels:
Gas heaters usually come with a control panel, some are fixed on the heater and some are fixed on the wall. We usually leave the wall panels in place but if it bothers you, you may ask Citygas to remove the panel at the same time they remove the heater. To make up the gap in the wall, you will need to engage an external wall plasterer and painter.


Thats it! 

There you have it, a 5-step checklist that will hopefully give you a clearer picture of the process. If you have any other questions, or an update on the $$ table.. do reach out to us! We value all feedback and information you would like to share with the community.

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Which water heaters are most popular in Singapore?
How do you determine which is the best size for your family?

How long does my heater take to heat up? 

No one wants to sit around waiting for hot water. The good news is, if you are using your water heater everyday, you probably don’t have to wait a second.

5 ways digital heaters saves you time and money

From our range, the most popular water heaters for HDB are digital heaters while heat pumps take top spot for private housing. Find out why.

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Amanda Zhong

Amanda Zhong

Amanda is the bookish personality of AOS Bath. She loves reading in quiet places over a good cup of tea. Like her other Gen Y peers, she has a penchant for advanced technology that delights and engages people.