What aircon installation involves
A proper installation is more than hanging a unit on a wall. The contractor should survey the room, size the unit (in horsepower or BTU) to the space, mount the indoor and outdoor units, run and insulate copper piping, lay a drain line with a proper fall, and connect power. Then comes the step that separates good work from bad: vacuuming the lines, checking for leaks, and testing the gas charge and cooling output before they leave.
In Petaling Jaya, most jobs are split units in terraces and condos in areas like SS2, Damansara and Kelana Jaya. Multi-split and ducted systems are less common and need more planning.
What to look for
- A written quote that lists piping length, brackets, wiring and extra charges.
- Clear terms on the installation warranty, separate from the manufacturer's unit warranty.
- Use of vacuum pump and gauges, not just "purging" the lines.
- Safe outdoor unit placement, especially on high-rise or condo ledges.
How our scoring helps
We list 127 businesses in this category. Our scores weigh review quality and consistency so you can shortlist quickly. See the ranked guide to air conditioning contractors in Petaling Jaya for the top picks, and read our methodology for how ratings are calculated.