4 Things to Check at Your New Aircon Installation Handover

A system can look neat and still have setup issues. Trunking can be straight and tidy while the drain line behind it slopes the wrong way. Cosmetic finish does not confirm functional quality. Checking before sign-off avoids the later friction of recalls and rework: once the completion form is signed, getting an installer back for corrections usually involves delays and sometimes extra charges.

The aircon checks at office fitout handover cover more than a home checklist. They include zone controls, ceiling access, final drawings and tests under normal use.

No technical knowledge is required for a good handover review. Most checks are observational, does it cool, does it drain, does the scope match what was quoted. A structured walkthrough catches more than you might expect.

Turn each indoor unit on individually using the remote and confirm it starts, responds, and cools as expected. Check that airflow direction and fan speed both respond to changes.

If one room takes noticeably longer to cool than others of similar size, flag it before sign-off. Do not assume it will improve on its own. Longer pipe runs or higher ceilings can cause slower response, but ask the installer to explain the reason so you can monitor it going forward.

Let each unit run for a while, then check around the indoor unit edges and drain outlet for any moisture. Early drip signals are easier to fix on the spot, before the installer has packed up.

Review pipe insulation, trunking finish, and access points. Insulation should be continuous with no exposed copper sections, especially where pipes pass through walls. Gaps invite condensation and future drip issues. A tidy finish should still keep service access practical; trunking sealed shut or screwed into awkward positions makes routine filter cleaning and future servicing unnecessarily difficult.

Record the exact model numbers for both indoor and outdoor units. These are needed for warranty claims and future part orders. Ask for the warranty card and any documentation confirming the installation scope.

For an HDB installation, record the BCA-qualified aircon installer and certificate number shown on the paperwork. Form AC-02 should be co-signed, submitted to the HDB Branch managing the flat within 14 days after installation, and kept as a copy by the flat owner or tenant.

Take photos of pipe routing, drain outlet locations, and outdoor unit placement before you leave the site. These details are hard to recall accurately later. A technician diagnosing a future problem can work faster when they see the original layout instead of guessing what is behind the trunking.

Handover-day checks catch the obvious. The first month of real use reveals everything else. Run each unit under normal conditions and record how long each room takes to reach comfort. A room that consistently takes much longer than others of the same size may have a setup issue such as incorrect pipe sizing, low gas charge, or a fan speed set too low during commissioning.

Watch for noise changes over the first few weeks. A brief click on startup, a soft hum from the fan, and a low draining sound when the unit cycles off are all normal. Noise that gets louder over time, a growing vibration, a rattle that starts after a week, or a knocking sound from the outdoor unit, requires a closer inspection. Record the type of sound, which unit it comes from, and when it occurs.

Check for drain and moisture signs during the second and third week. In Singapore's climate, a new unit running long daily sessions pushes significant water through the drain line. A drip from the indoor unit after extended sessions, or damp marks below the unit on the wall, indicate a drain issue that may not have been visible on handover day.