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Aircon Installation Procedure: A Step-by-Step Guide

Installing an air conditioning unit isn’t just a matter of plugging it in and hoping for the best. Many folks might think that once the system is up and running, it’ll perform optimally without much further ado.

Yet, installation mishaps can lead to a surge in energy bills and constant malfunctions. At iCare Aircon, we understand that getting your installation spot-on is key to ensuring your cooling system serves you efficiently right from the outset.

With our two decades of expertise in servicing, repairing, and managing large-scale air conditioning installations across Singapore’s demanding weather conditions, we’re well-versed in what it takes to keep your system ticking over nicely.

Our dedication lies in delivering top-notch services customised to meet your exact requirements. Proper installation makes all the difference – allow us to demonstrate how it’s mastered with precision.

Key Takeaways

  • Installing your aircon correctly saves energy and avoids malfunctions. iCare Aircon experts know how to do it right in Singapore’s weather.
  • Choose the best location for both indoor and outdoor units. It should be clear of blockages, away from direct sunlight, and at least 7 feet high for the indoor unit.
  • Prepare the site with a strong wall or frame support. The outdoor unit needs a level pad and space all around it.
  • Connect lines and wires carefully following safety guidelines. Make sure to vacuum out moisture from pipes before starting your aircon.
  • Regular maintenance like changing filters every three months keeps your system efficient. Avoid common mistakes by drilling holes with care and checking all connections during installation.

Choosing the Best Location for Aircon

The image depicts a centrally positioned air conditioner unit in a modern living room.

We always make sure the indoor unit goes in a spot where nothing blocks it, away from direct sunlight and heat sources. It needs to sit at least 7 feet off the ground. This setup stops problems and helps air flow through your home better.

For outdoor units, we keep them clear of TV or radio antennas by 10 feet to avoid any signal issues. We also fit it at least 1m away from power lines or anything that could mess with its operation.

Picking a central place like your living room for the indoor part makes cooling more efficient across your space.

Our team focuses on these details because they ensure your climate control works well without hassles. Making these choices gets you a smooth-running system that keeps your home comfortable all year round.

With our experience, we’ve found these steps critical for setting up air conditioners right – making sure every corner of your place gets just the right amount of cool or warm air when needed.

Preparing the Site for Aircon Installation

We make sure the wall can support the aircon. Sometimes, we add a metal or wood frame for extra strength. The outdoor unit needs to be within 50 feet of the indoor one. It also requires space—12 inches around it—and should sit in a shady spot away from wind and dust.

For this unit, we laid a level concrete pad on the ground and fixed it with anchor bolts to reduce vibration.

In flats upgraded under MUP/HIP with a 40 amps main switch, specific rules apply. We follow these guidelines closely to ensure everything is set up correctly for your aircon system.

Fixing the Mounting Bracket for the Indoor Unit

We secure the mounting plate to the wall, making sure it’s straight. First, we use a level tool for precision. Then, we drill holes and put in plastic anchors to hold the plate firm.

Finally, tapping screws keep everything tight.

Next comes drilling a 3-inch hole through the wall for pipes. We ensure it tilts down slightly outside for water to flow out easily. Before drilling, we check carefully behind the wall to avoid hitting any wires or pipes.

This step is crucial for the safety and smooth installation of your aircon unit by iCare Aircon.

Setting Up the Indoor Aircon Unit

We find the right spot on an interior wall, away from direct sunlight and heat sources. It’s crucial to place it 7 feet off the ground. This height ensures good airflow in your room.

We make sure there’s 6-12 inches of clear space around it for air to move freely.

Next, we lift the front panel and check the electrical connections inside. We match cable wires to screw terminals following a wiring diagram. Pipes and cables go through a hole in the wall outside.

Copper pipes, a power cable, and a drain pipe are secured together with tape for proper drainage. The unit must tilt backwards slightly—2-3 degrees—to let water flow out easily.

After all this, we attach the indoor unit firmly to its mounting plate on the wall.

Placing the Outdoor Aircon Unit

An outdoor air conditioning unit placed on a concrete pad.

We always make sure to place the outdoor air conditioning unit in a spot that avoids too much heat, dust, or areas with lots of people moving around. This means finding a space that gives it 12 inches of clear room all around.

We lay down a level concrete pad and add rubber cushioning beneath the condenser unit to cut down on noise from vibrations. It’s also key to keep this unit no more than 50 feet away from the indoor part to ensure they work well together.

Care is taken that there are no antennas close by; specifically, we check that no radio or television antenna is within 10 feet of the outdoor condenser. This helps prevent any interference and keeps your air conditioning system running smoothly.

By following these steps, we ensure your outdoor unit is set up perfectly for efficient cooling and long-term performance.

Connecting Lines and Wires

We carefully connect electrical wires following the unit’s wiring scheme. This involves using a cable clamp to ensure cables are securely fixed. It’s crucial to do this right for safety and efficiency.

We then attach the piping and cable to the outdoor aircon unit. We use flare nuts for copper pipes and link the power cable correctly.

Next, we remove moisture and air from the refrigerant circuit with a vacuum pump. This step is key to keeping your aircon running smoothly. All pipes on the walls get clamps, and we check every valve and joint for leaks.

It ensures everything is tight, with no risk of problems later on.

Testing the Aircon System

We turn on the aircon starting from the indoor unit to ensure cool air flows. This step checks if all parts work well together. We look at valves and joints for any leaks using tools designed for this task, ensuring nothing escapes our notice.

All pipes get a layer of insulating material and tape to keep them safe and efficient.

Next, we follow every instruction from the manufacturer’s manual. It’s vital to do this right for your aircon system to run smoothly. Our team always makes sure refrigerant levels are perfect and that there’s no humidity or unwanted air in the circuits.

Finally, we double-check every connection – electrical wires meet their correct matches in the breaker box without issues, making sure your home stays cool and comfortable without risking safety or efficiency.

Additional Steps in Aircon Installation

After getting your cooling system up, we shouldn’t stop just yet. Sealing gaps and a good clean-up make sure your cooler works great and stays that way.

Sealing and Insulating

We seal the hole in the wall with expanding polyurethane foam. This keeps hot air and insects out. We also insulate the tubes between outdoor and indoor units. This stops the walls or studs from getting damaged by drainage pipe sweat.

Final Checks and Adjustments

We always check the indoor unit is tilted backwards 2-3 degrees for proper water flow. This ensures no water leaks inside. We make sure all electrical connections are secure, including circuit breakers and ground wires.

It’s crucial for safety and the system’s reliability.

Our team tests air filters to guarantee they’re clean for optimal airflow and checks both evaporator and condenser coils for any signs of dirt or damage. Proper insulation around refrigerant lines is confirmed to avoid energy loss.

We ensure no unusual noises are present when the system runs, suggesting everything is set up correctly.

Cleaning After Installation

After we finish installing your air conditioner, cleaning is a must. We take our vacuum cleaners to the work area, making sure no dust or debris is left behind. This step keeps your room clean and ensures no particles enter your newly installed system, which can prevent aircon problems like dirty filters or blocked evaporator coils.

We also wipe down the indoor unit and outdoor compressor with a damp cloth. This clears any fingerprints or marks, keeping the external wall face stain-free. Regular maintenance starts from day one; that way, your air conditioning systems stay efficient and last longer.

Maintaining Your Aircon for Durability

We always swap out air filters every three months to stop dust and dirt from blocking the airflow. This step ensures our HVAC systems run smoothly. We also keep an eye on the outdoor condenser unit, removing any debris that might affect its efficiency.

Before winter hits, covering the aircon’s outside part protects it from harsh weather.

Our team makes sure no stains mar the external wall face where we install room air conditioners or central AC units. Regular checks and cleans of this area prevent build-up that could slow down heat dissipation.

Following these steps means less trouble with our aircon and more years of cool, clean air inside homes.

Avoiding Common Aircon Installation Errors

We make sure to pick the right spot for your aircon. It avoids sunlight and heat sources, helping it run better. Our team drills holes with a careful slope for water to flow out, stopping damage and leaks.

We always stick to the maker’s guide. This keeps your warranty safe.

Our crew connects all wires and pipes correctly to stop short cycling and power issues. They set up each part of your cooling system with care. This means no refrigerant leaks or dirty air filters that can cause trouble later on.

We’ve got this down to an art, ensuring everything works just as it should from day one.


Our guide showed every step to put in an aircon the right way. We covered picking the place, getting it ready, and installing both indoor and outdoor parts. Then we connected everything and made sure it all worked well.

After that, we sealed, checked, cleaned up, and shared tips on keeping your aircon running smoothly. Plus, we tackled common mistakes people make.

Doing this makes sure your cooling system works great from day one. And if things seem tricky or you need expert help—reach out to us at iCare Aircon – hello@icareaircon.com. Our team is ready to lend a hand with any aircon needs you have!


1. How do we start the aircon installation process?

First, we inspect the area for ductwork and power supply needs. This ensures the central air conditioning system fits perfectly.

2. What’s crucial in preparing for a central air conditioner installation?

We must ensure the floor is stable and drilled properly for secure mounting. Weatherstripping around windows helps prevent energy loss.

3. Can you explain how to connect an HVAC unit?

Connecting involves wiring to the fuse box and ensuring the thermostat communicates with both furnace and air-conditioner units correctly.

4. How does troubleshooting work if there are issues post-installation?

We follow a step-by-step troubleshooting guide focusing on common problems like mildew in ducts or faults in the printed circuit board.

5. Why is regular maintenance important after installing an A/C unit?

Regular servicing prevents buildup in air ducts, maintains energy efficiency, and extends your system’s lifespan—key components include cleaning filters and checking refrigerant levels.

6. Who should I contact for professional aircon installation services?

For expert service, reach out to us at hello@icareaircon.com; we specialise in everything from split systems to central air conditioners with precision and care.

About the Author James Tan

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