Planning to install a new aircond? This comprehensive guide covers everything from choosing the right unit to what to expect on installation day.
Before You Start: Key Decisions
1. Choose the Right Size (HP)
The most common mistake is buying the wrong horsepower (HP) for your room. In Malaysia’s tropical climate, an undersized unit will run continuously, driving up your electricity bill without ever truly cooling the space.
| Room Size | Recommended HP | Cooling Capacity (BTU) |
|---|---|---|
| < 120 sq ft | 1.0 HP | 9,000 - 10,000 |
| 120-180 sq ft | 1.5 HP | 12,000 - 13,000 |
| 180-250 sq ft | 2.0 HP | 18,000 - 19,000 |
| 250-350 sq ft | 2.5 HP | 24,000 - 25,000 |
| 350-450 sq ft | 3.0 HP | 28,000 - 30,000 |
Critical Adjustments:
- The “West Sun” Factor: If your room faces the afternoon sun (West), add 0.5 HP.
- Top Floor / High Ceilings: Heat rises and accumulates. Add 0.5 HP for ceilings above 10ft.
- Kitchens: The heat from cooking requires an extra 0.5-1.0 HP.
2. Inverter vs Non-Inverter
This choice directly impacts your monthly TNB bill. With the new electricity tariff structure introduced in July 2025, efficient usage is more important than ever.
| Feature | Inverter | Non-Inverter |
|---|---|---|
| Price (1.0HP) | RM1,500 - RM3,000 | RM800 - RM1,500 |
| Electricity Savings | 40-60% less (if used >8 hours) | Standard consumption |
| Cooling Style | Maintains constant temp | Fluctuates (Starts/Stops) |
| Noise | Whisper quiet | Audible compressor clicks |
| Best For | Master bedrooms, Offices | Guest rooms, Store rooms |
The 2025 Verdict: Choose an Inverter for any room where you sleep or work daily. The new “Time of Use” (ToU) tariff options for domestic users make inverters even more economical during off-peak hours. Stick to Non-Inverter only for guest rooms used less than 3 times a month.
3. Choose a Brand
Don’t just buy a brand; buy the right model for your needs. Here are the specific 2025 favorites in Malaysia:
- Daikin (FTKF “Smart” Series): The market leader for a reason. Known for the “Gin-Ion Blue” filter and extreme durability.
- Panasonic (X-Premium / XU Series): Best for health-conscious families. Their Nanoe-X Mark 3 technology actively inhibits bacteria and viruses.
- Mitsubishi Electric (Mr. Slim): The “bulletproof” choice. Their outdoor units are coated to resist corrosion, making them perfect for Malaysian humidity.
- Acson (AVO Series): A local favorite that is affordable and has spare parts available everywhere.
- Midea (Xtreme Save): The budget champion. Offers decent inverter performance at a significantly lower price point.
Types of Installation
Back-to-Back Installation
This is the standard “free” or low-cost installation often advertised. The indoor unit sits on one side of the wall, and the outdoor compressor sits directly behind it on the balcony or corridor.
- Pros: Cheapest, most efficient cooling, easiest to service.
- Price: From RM300 (1.0 HP)
Extended Piping Installation
Most condo master bedrooms require this. The indoor unit is far from the designated compressor ledge.
- Cost Impact: You pay per foot for extra copper piping.
- Price: Installation Fee + RM25-35 per extra foot of pipe
Dismantle & Install (Replacement)
If you are replacing an old unit, there is a small fee to safely remove and dispose of the old equipment.
- Price: RM50 - RM80 per unit
Installation Cost Breakdown (2025 Rates)
Prices have adjusted slightly due to material costs. Here is what you should expect to pay for a standard job in the Klang Valley.
Standard Back-to-Back Package
| Component | Included? | Notes |
|---|---|---|
| Installation labor | âś… Yes | Professional mounting |
| Wall bracket | âś… Yes | For outdoor unit |
| 10ft Copper piping | âś… Yes | Standard 0.61mm thickness |
| Drainage pipe | âś… Yes | Up to 10ft |
| Wiring (Indoor to Outdoor) | âś… Yes | - |
| Wall penetration (1 hole) | âś… Yes | 3-inch diameter |
Common Extras
| Item | Price (Avg) |
|---|---|
| Extra copper piping (1.0HP) | RM25 - RM28 /ft |
| Extra copper piping (2.0HP) | RM35 - RM38 /ft |
| PVC Trunking (Casing) | RM18 - RM22 /ft |
| Power Point Installation | RM180 - RM250 |
| Dismantle Old Unit | RM60 - RM80 |
| Hacking (Concealed piping) | RM150+ per meter |
Pro-Tip on Copper Thickness: Ensure your installer uses copper pipes with a minimum thickness of 0.61mm (23 SWG). This is the SIRIM requirement for R32 gas, which operates at higher pressure. Cheap installers often use thinner 0.51mm pipes, which are prone to leaking gas after just a year or two.
The Installation Process
Day Before
- Get Management Approval: If you live in a condo, you likely need to pay a renovation deposit and fill out a form 3 days prior.
- Clear the Area: Move beds and electronics away from the wall to prevent dust damage.
Installation Day (2-4 hours)
Step 1: Site Survey (15 min) The installer confirms the route for the pipes. In condos, they must follow the building’s designated facade guidelines.
Step 2: Mounting & Drilling (45 min) They will install the metal backing plate for the indoor unit and drill a 3-inch hole through the wall.
- Note: The hole must be drilled with a slight downward slope to ensure water flows out naturally.
Step 3: Piping & Wiring (60 min) The copper pipes are connected.
- Critical Check: Watch for insulation. The black foam wrapping the pipes should be at least 3/8 inch thick (ideally 1/2 inch) to prevent condensation “sweating” in our humid weather.
Step 4: The Vacuum Process (20 min) This is the most skipped step by bad installers. The installer must use a vacuum pump to remove air and moisture from the copper pipes before releasing the gas.
- Why: Moisture + R32 Gas + Heat = Acid. This acid eats your compressor from the inside out.
Step 5: Commissioning (20 min) They release the gas, turn on the power, and check the pressure.
What to Check After Installation
Do not sign the completion form until you verify these points:
✅ The Pour Test: Ask the installer to pour a bottle of water into the indoor unit’s tray. Watch the drain pipe outside. The water should flow out immediately and smoothly. If it backs up, you have a leak waiting to happen.
✅ Cooling Speed: Set the unit to 16°C and maximum fan speed. The air should feel ice-cold within 10 minutes.
âś… Vibration Check: Go outside to the compressor. It should hum steadily. If it rattles or shakes violently, the rubber dampeners may be missing or the bracket is loose.
Common Installation Issues
Issue: Water Leaking Inside
The Cause: Usually a clogged drain pipe or a unit that wasn’t installed with a slight tilt for drainage. The Fix: Clear the blockage or re-level the unit.
Issue: Pipes “Sweating” (Water droplets on trunking)
The Cause: The black foam insulation is too thin or poor quality. The Fix: Replace with thicker (1/2 inch) Armaflex insulation.
Issue: Unit Not Cold Enough
The Cause: A gas leak due to poor flaring (connection) of the copper pipes. The Fix: The installer must re-flare the pipes and top up the gas.
Warranty Information
Protect your investment by knowing what is covered:
- Manufacturer Warranty:
- Compressor: 5-10 years (Part only, labor usually charged after year 1).
- General Parts: 1-2 years (PCB board, fan motor).
- Installation Warranty:
- Good installers provide a 30 to 90-day workmanship warranty. This covers leaking water or gas due to their installation errors.
Hiring an Installer: Tips
âś… Good Signs:
- They carry a vacuum pump (ask them beforehand!).
- They specify the copper pipe thickness (0.61mm+).
- They offer a workmanship warranty of at least 1 month.
đźš© Red Flags:
- “Gas top-up” is not needed for a new unit. If they ask to charge you for gas on a new install, they are scamming you.
- They suggest installing the outdoor unit in an enclosed yard with no ventilation.
Our Installation Service
At Aircond Man, we adhere to strict SIRIM standards for every job.
- Transparent Pricing: You get an itemized quote before we start.
- R32 Ready: We use 0.61mm+ copper pipes and proper vacuuming methods.
- Mess-Free: We use dust sheets and clean up after ourselves.
- Warranty: We stand behind our work with a solid installation guarantee.
Need professional installation? Contact us for a quote - whether you need a full supply-and-install package or just labor for a unit you bought online.
