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Aircon Installation Guide Singapore

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Once you have bought an aircon of your choice, you can now have an aircon installation done. But how exactly should one conduct this process?

Like an aircon chemical overhaul and aircon repair, an aircon installation requires many things to be considered. Thus, in order to assist you, we have prepared an aircon installation guide:


Factors To Consider Before Installing Your Aircon

  • Your Home’s Electrical Load
    • Before you install your newly purchased Daikin or Panasonic aircon, you should take note of your home’s electrical load. Unlike flats which have undergone the Main Upgrading Programme (MUP) or Home Improvement Programme (HIP), old HDB flats (i.e. completed before 1 January 1994) tend to have minimal load capacity. As such, most people residing in them are required to obtain HDB permits before installing 15-amp power points or 20-amp isolators for their newly bought aircons
  • Warranty Availability
    • Obtaining an extended warranty for your aircon is a must especially if you plan to use it daily. That way, you will be able to minimize spending in case your unit experiences common aircon issues.
  • Dirt and Dust Obstructing Aircon
    • For your System 1 or System 4 aircon to run smoothly, ensure that it is free from dirt and dust before you install it. Most aircon maintenance companies recommend that you clean the air filters and check the drain pipes for any obstruction to ensure that air is distributed freely.
  • Good Aircon Servicing
    • When engaging an aircon service to install your unit, make sure to choose a provider with a reputable record of aircon works. Moreover, remember to check that their aircon servicing prices are reasonable. By doing these, you can install your aircon smoothly and at an affordable cost.


Critical Aircon Parts and Recommended Models


In order for your new aircon to last long, make sure that it is set up using high-quality aircon parts. This will prevent problems such as aircon water leaks and improper insulation which often require expensive aircon repairs.

Here are some standard aircon parts as well as their higher quality counterpart you can look out for:

  • PVC Drainage Pipes (Standard: 13mm Diameter / Upgradable to: 16mm Diameter)
    • These pipes work to drain condensed water and are connected to the aircon’s fan coil. Though they usually have a standard size of 13mm in diameter, a 16mm model will allow better flow of water from the fan coil.
  • Copper Pipes (Standard: Gauge 23 / Upgradable to Gauge 22)
    • Copper pipes connect the fan coil of the aircon to the compressor and transport the refrigerant gas between the internal and external units. It is recommended that you purchase Gauge 22 copper pipes instead of the standard Gauge 23. This is because the former tend to be thicker and can thus withstand a higher amount of pressure to prevent aircon leaks.
  • Armaflex Insulations (Standard: 3/8″ Insulation / Upgradable to: 1/2″ Insulation)
    • Insulated rubber foams absorb water droplets that form on the copper pipes during condensation. When installing your aircon, it is best that you purchase rubber foams which have fulfilled Fire Propagation Test Standards and are thick enough to slow down condensation and prevent aircon leaks.
  • Wire Cables (Standard: 3 Core 40 Wires / Upgradable to: 3 Core 70 Wires)
    • Wire cables provide electric current to both the indoor and outdoor aircon units. So that your entire aircon can withstand heavy current flow, make sure to install it with 3 Core 70 mm cables. That way, you can protect your aircon from severe damage in case electrical issues take place.
  • Brackets (Standard: Steel / Upgradable to: Stainless steel bracket of Grade 303)
    • Most aircon suppliers use steel brackets for their aircons. That said, you might want to opt for high-quality Grade 303 stainless brackets when installing your aircon so that it is fastened securely.
  • Compressors (Standard: Reciprocating / Upgradable to: Scroll)
    • Reciprocating compressors are known to be the most commonly used compressor type for residential and office aircons. This is because of its ability to hold multiple cylinders and its low maintenance level. However, if you are looking for a compressor type which is more reliable, consider purchasing a scroll compressor. Unlike a reciprocating compressor, this requires fewer parts to compress refrigerant and performs quieter. As such, it is much more efficient and convenient to use for home and commercial/industrial aircons.


Common Aircon Installation Mistakes To Avoid

  • Purchasing An Improperly-sized Aircon
    • Before you install your new Mitsubishi or Daikin aircon, it is important to consider the size of the room where you intend to set it up. By ensuring that your room is wide enough to accommodate your aircon, you will be able to guarantee proper air ventilation.
  • Failing To Fasten The Aircon Securely
    • Many people make the mistake of not fastening their System 1 or System 2 aircon securely while installing them. When this happens, the entire unit can loosen and incur damage. To prevent this, ensure that your aircon is set up with durable mounts or brackets.
  • Lack of Proper Insulation
    • Proper insulation foams are another thing you should consider during a commercial or HDB aircon installation. For instance, window aircons usually require insulation foams when being installed to cover up the open spaces at their sides. Meanwhile, there are other aircons which need to have sheet metal ducts to properly transport cooled air.
  • Installing The Aircon In The Wrong Place
    • When installing a System 2 or System 3 aircon, it is imperative that you situate it in a well-ventilated area, free from airborne particles. If not, you might end up feeling uncomfortable and your unit may even experience various issues which require an aircon repair.
  • Not Checking Refrigerants
    • One of the most important components often ignored during an aircon installation are the refrigerants. If refrigerant levels are low from improper installation, your aircon will not be cold enough for ventilation. Furthermore, any aircon leaks which can occur as a result may cause you to have high power bills. Thus, be sure to check that they are in optimal condition before setting up your unit.




For your aircon to be installed properly, it’s best that you engage Everyworks Singapore. We have professional technicians who can cater to all your aircon repair or installation needs. See our price list to know more about our servicing costs.


Everyworks Singapore provides the best home maintenance solutions available in Singapore. Moreover, we ensure quick customer response, prompt booking, and reasonable and affordable prices for whatever services you acquire. Our highly experienced and skilled plumberelectricianaircon servicing technicians and handyman teams can also guarantee that the work performed is completed professionally and efficiently as illustrated by our highly-rated Google and Facebook reviews. See our past home maintenance works and articles  to learn more about our home services in Singapore. To set an appointment promptly and have your issues resolved immediately, simply contact our attentive customer support team by sending a quick text or picture through Whatsapp at +65 82410032 or by calling us at +65 6909 0990. You can also email for any email enquiries you might have.


This article is reproduced from DW Aircon Singapore.

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