Common Aircond Installation Mistakes That Cause Problems Later
Many air conditioner problems do not come from the aircond brand itself, but from poor installation practices. In Malaysia’s hot and humid climate, correct installation is critical for performance, electricity savings, and long-term reliability.
Below are the most common aircond installation mistakes homeowners should be aware of before installing a new unit.
1. Reusing Old Copper Pipes Without Proper Inspection
One of the most common cost-cutting mistakes is reusing old copper piping without flushing or pressure testing.
Why this is risky:
- Old pipes may contain sludge, moisture, or acid
- Different refrigerants (R22 vs R32/R410A) are incompatible
- Higher chance of gas leakage and compressor damage
When copper pipe reuse may be acceptable:
- Same refrigerant type
- Correct pipe size and thickness
- Flushed with nitrogen and vacuum-tested
Without these checks, copper pipe reuse can shorten the aircond lifespan significantly.
2. Incorrect Copper Pipe Size or Poor Insulation
Using the wrong pipe diameter or low-quality insulation affects cooling efficiency.
- Reduced cooling performance
- Higher electricity consumption
- Water dripping due to condensation
Proper insulation thickness is especially important in Malaysia’s humid environment.
3. Poor Drainage Installation
Improper slope or undersized drain piping can cause:
- Water leakage indoors
- Ceiling stains and mold growth
- Bad smell from stagnant water
Drainage issues are among the most common post-installation complaints.
4. Why Cheap Aircond Installation Can Cost You More Later
Low-priced installations often cut corners to reduce cost:
- Thin copper pipes
- Low-grade insulation
- No nitrogen flushing or vacuum testing
- Unskilled workmanship
While the initial price looks attractive, homeowners may face:
- Higher electricity bills
- Frequent gas refilling
- Early compressor failure
- Voided manufacturer warranty
In the long run, a proper installation saves money and avoids unnecessary repairs.
How to Avoid These Installation Problems
- Use experienced and authorized installers
- Confirm copper pipe size, thickness, and insulation quality
- Ask whether nitrogen flushing and vacuum testing are included
- Do not choose based on price alone
A good installation is an investment, not an expense.
Frequently Asked Questions (FAQ)
Is it safe to reuse old copper pipes for new aircond?
It depends. Copper pipes can only be reused if they are compatible with the new refrigerant, properly flushed, pressure-tested, and in good condition. Otherwise, reuse is risky.
Can poor installation increase my electricity bill?
Yes. Incorrect piping, insulation, or gas leakage forces the aircond to work harder, increasing electricity consumption.
Why do cheap aircond installations fail more often?
Cheap installations often skip essential steps like nitrogen flushing, use thin pipes, and low-quality insulation, leading to long-term failures.
Does bad installation affect aircond warranty?
Yes. Many manufacturers may reject warranty claims if installation does not follow their technical guidelines.