The Essential Guide to Aircon Piping Installation

Essential Guide to Aircon Piping Installation

Aircon Piping Installation Introduction

Aircon Piping Installation is commonly needed in Singapore. Are you thinking about re-installing your aircon piping for your house, or planning to install a new Aircon unit? You have come to the right place! In this article we will break down all that you need to know about aircon piping installation for you. This includes the materials needed, things to take note of and several ways you can get shortchanged. However, we will not be covering Aircon installation via ducting. Aircon Piping installation is always included in the process of Aircon installation. Additionally, if it is your first time doing Aircon installation, click on the link to find out more.

aircon piping

If you are too lazy to read about aircon installation,



When do you need Aircon Piping Installation or Reinstallation?

Firstly, if you trust your Aircon technicians, there won’t be a need to read this article. This is because they will generally provide you with quality Aircon installation materials. Therefore, it will be less likely for the aircon piping to wear out and require a replacement. Nevertheless, there are times when you need to get your Aircon piping reinstalled such as if there are condensation issues with your Aircon Piping or trunking for example. That is because most of the older Aircon models used in the past are made of outdated materials. Whereas the current inverter Aircon models use upgraded installation materials. The air pressure from an inverter Aircon unit is higher. Hence, using outdated aircon installation materials will cause condensation problems.

aircon installation

Want to know more about


Types of Aircon Piping

When we are talking about Aircon pipes. There are only 2 types of piping. Namely, copper pipe and water pipe.

Different Types of  of Aircon Gas Pipe

Almost all aircon installers in Singapore use copper pipe for Aircon gas pipe. In the past there were installers who used aluminum pipe instead. However, copper pipe is far superior and is generally a bit more expensive. There are a few differences in the types of copper pipe you can use.




The thickness is referring to how thick the copper pipe is. The way to classify it is using SWG. The lower the SWG number, the thicker it is. For example, SWG22 is thicker than SWG23.




The size of the copper pipe refers to the size of the opening of the copper pipe. The Aircon gas pipe size is determined by the size of the fan coil. And different manufacturers have different requirements. For example Mitsubishi electric Starmex FCU of 9000 BTU uses ⅜ inch and ¼ inch size pipes.




In our opinion, the brand of the copper pipe generally doesn’t matter. There is not a single brand that has dominated this industry in terms of branding. Most importantly, if an Aircon installer has been installing AC for many years. They will stick to a brand in which they prefer. That is because they would have trusted that particular brand of copper pipe. Furthermore they will also be more familiar with the ease of bending that particular brand of copper pipe

Lifespan of Aircon Pipe

Typically, a landed or condominium unit don’t change their Aircon piping. This is because it is rather troublesome to change it. To a regular homeowner, this is akin to a minor renovation work. The point is, Aircon copper pipe generally has a very long lifespan. Nevertheless, the insulation that is surrounding the copper pipe may be subjected to wear and tear. So over the long run, they may lose or decrease in their ability to absorb the condensation formed on the Aircon copper pipe.

As for water pipe, in a condominium or landed property. The water pipe is embedded under the floor tiles or walls. It is extremely rare for the water pipes to be broken. Hence, Aircon water pipe has an extremely long life span. The only maintenance needed is to regularly flush the water pipe during routine Aircon servicing.

Read this article about whether aircon pipe can be reused.

Click to find out our



Daikin Aircon Promotion


Midea Aircon Promotion


Panasonic Aircon Promotion


Mitsubishi Aircon Promotion

Aircon Materials Needed for Aircon Piping Installation

Armaflex Insulation

Armaflex Insulation

This is pretty much the most important Aircon material you need to take note of. It is advisable to use thicker insulation for installation of air-conditioners at home. The thicker the insulation, the more likely it is to absorb condensation from the water pipes. Besides, it is extremely costly to re-run Aircon piping. That is due to the cost of the materials and the labor involved. Therefore you want to prevent this by installing thicker, higher quality aircon piping.

For insulation, there is a general term being used by Air-conditioning installers in Singapore, namely “upgraded materials”. For upgraded materials, the insulation used is ½ Inch Armaflex insulation; whereas normal materials will be using 3/8 inch Armaflex insulation. If you take a look at the picture above, you can see the difference in size of the insulation. The thicker insulation will be having much better absorption ability.

Other than thickness of the insulation, another property you might be concerned of is the class of insulation. You might have seen the term “ ½ inch Armaflex class 1” or “1/2 inch Armaflex class 0”. The class refers to the fire-resistant property of this insulation. Honestly, it doesn’t make any difference to the quality of the materials for your Aircon installation. So it is not something you will need to pay much attention to.

Copper Pipes

copper pipe

If there’s any issue of gas leaking, you will either have to change your entire condensing unit or re-install your Aircon piping. As mentioned earlier, the cost of re-running your Aircon piping installation is extremely costly. The cost of a Aircon Pressure Test which is to find out location of the gas leak is also pretty expensive. If you would like to know more about Aircon gas leaking, click on the link: Aircon Gas Leaking

The upgraded copper pipe used will be SWG22 copper pipe or “G22 copper pipe” for short. The normal, outdated material used is G23 copper pipe. The G22 copper pipe is thicker, hence it is less likely to have gas leak. This is because it is be better able to withstand pressure of the refrigerant.

Water Pipe


Aircon Piping Installation involves the usage of water pipes. These water pipes used have no distinctive brands. Generally, the only 2 sizes used for HDB are 13mm/16mm. The bigger the better, as water will be better able to flow through it, without causing drainage issue. 

Cable / Electrical wire

LG aircon spare parts

Aircon Piping Installation also involves the usage of electrical wires. The ones used to connect your fan coil unit from your compressor is usually three core. The term 3C70 stands for 3 core wire with 70 strands of wire in each cable. In general, you should go for the Singapore brands (for e.g Sigma cable / keystone cable), and use the ones that are 3C70.

Aircon Trunking / Casing


Aircon trunking or casing as shown in the picture above is used to cover or hide all the relevant Aircon installation materials. The brand or type of trunking does not matter. The type of trunking that will be used depends on which brand the Aircon installer is familiar with. Installation materials are concealed in landed property ceiling. Therefore, you will not be able to see it during landed property aircon installation. Aircon Trunking is usually more visible in HDB.


Here at Silverback Aircon, our friendly staff and technicians provide you with the most efficient service for the best price. All of our spare parts are tested, refurbished and commissioned before selling it to you so you can trust us with all your aircon needs! For enquiries regarding aircon piping installations, don’t hesitate to contact us and our friendly staff will provide you with the information you need. Furthermore, you can even schedule an appointment with us for a site visit. This way, we can offer a better diagnosis of your aircon piping situation and advise you accordingly. Lastly, we also provide other aircon services as well.

Facebook Review
Carousell Review
Qoo10 Review


Upon understanding some of the different materials used for your Aircon Piping, it equips you with the ability to decide what is best for you, and ensure that you do not get shortchanged by your suppliers. If you ever require, feel free to look for us at Silverback Aircon and we will be able to assist you. In addition, we also provide a one-stop solution package which consist of Aircon Purchase and Installation as well, inclusive of replacing the aircon piping (if required).  Above are some of the brands that we sell, and you can click on the links to know more about the brands.

In conclusion, it is imperative to use good Air-conditioning materials for your Aircon Piping Installation. This is to prevent serious issues from arising in the future, such as condensation problem or electrical tripping due to broken wire. If you need help or assistance in Aircon Piping installation, feel free to call us at 9651 5152 for more information.

For more information on Aircon Piping, CALL / WHATSAPP us at 9651 5152!

silverback aircon
Leave a reply