AC installation & ducting for duplexes in Alnuayriyah

Prepared by the technical team · editorial review · last updated 13 November 2026 · Sources

Before we start: what we know about Alnuayriyah

The centre of Alnuayriyah sits about 49 m above sea level (SRTM open elevation data). Main roads in or near Alnuayriyah: King Abdulaziz Road.

Team note on Alnuayriyah: Kashf teams serve this city and its nearby districts with the same documented inspection standard: device-based leak detection without demolition, a written report, and a clear scope before any work begins..

Before any unit is priced for a duplex in Alnuayriyah, the first thing a technician checks is the elevation of the site, because the centre of Alnuayriyah sits about 49 m above sea level (SRTM open elevation data). At that height the building is not exposed to the kind of flood-prone low ground found elsewhere, so the outdoor condenser can be placed on the roof or a side wall with the usual attention to airflow and drainage rather than special raising. The check then moves to the supply: split AC supply and installation is quoted at SAR 350–900 per unit, and the final figure depends on the wall route, the length of pipe run and whether the ducting passes through a shared core. Each duplex unit is inspected on its own, since the two halves often differ in orientation and in how the rooms were finished.

Several things are deliberately left to the site visit. The technician must walk the route for the refrigerant lines and condensate drain, decide where the indoor units can sit without blocking doors or ceiling access, and confirm whether an existing false ceiling or plaster will need to be opened. Where ducting is planned for a duplex that has already been finished, the cost of making good, whether that is plastering with guides at SAR 15–35 per m², painting with surface preparation at SAR 8–25 per m², or gypsum board false ceiling at SAR 40–90 per m², cannot be settled from the outside. A site visit and quantity survey costs SAR 150–400 per visit, and that survey is the point where these trades are measured and agreed rather than guessed.

To help the technician, the owner or occupant should have ready the age of the building, any previous drawings, the position of the electrical board, and a note of which rooms run AC most hours of the day. Tell the technician if the duplex is an annex or rest-house building, since that changes the scope and the rate, which can sit between SAR 700 and 1,800 per m². Mention any plan to tile or refinish afterwards, as tiling with adhesive and grout is priced at SAR 25–60 per m² and is easier to coordinate before the ducting is closed up. A clear list of these details lets the visit end with a usable scope instead of a follow-up call.

In a duplex, the two floors often share lines, so tests are done floor by floor.

Signs worth paying attention to

The following signs are worth checking before they grow:

• A new space that needs cooling
• Units that drip or cool weakly
• Replacing old units

The most common causes

• Long or poorly insulated copper runs — we check this before anything else.
• A common cause: a unit size that does not suit the room.
• A common cause: no proper drain line.

How we choose the tool in Alnuayriyah

The steps in order

1. Survey: Room sizes and unit positions are checked.
2. Sizing: Unit capacity is chosen for each room.
3. Installation: Units, copper, drain and breaker are installed.
4. Testing: Pressure, cooling and drainage are checked.

Quick comparison: facts and costs in Alnuayriyah

Short answers for Alnuayriyah

Common mistakes we see

• Choosing a unit by price, not by room size

The written outputs

The written output: the unit capacities, the routes and the test results. The report is numbered and can be checked with its verification code.