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Air Conditioning 1 June 2026 6 min
Planning AC for a New Build in Luxembourg: What to Decide Early
Designing AC Into a New Build in Luxembourg
If you're building or buying off-plan, plan AC during shell construction, not after move-in. Retrofitting doubles the cost and looks worse.
Decisions to Lock In Early
- Topology: ducted (hidden) vs multi-split (visible indoor units)
- Outdoor unit location: ground vs façade vs flat roof
- Refrigerant line paths: stubbed walls or accessible chases
- Electrical: dedicated breaker per outdoor unit, sized for inrush
- Drainage: gravity condensate route to outside
Typical Budget for a 150 m² New House
- 4-zone multi-split: €7,500–€10,000
- Full ducted system: €11,000–€16,000
- Extra for pre-installation during shell: €600–€1,200 (saves €2k+ later)
Coordinating With Your Architect
We provide free pre-installation drawings the architect can integrate into the electrical and HVAC plans. Call +352 27 58 58 25 before plasterboard goes up.
Frequently Asked Questions
Can we pre-install refrigerant lines before walls close?
Yes — we lay sealed, pressure-tested copper lines and condensate routes before plasterboard. Final indoor and outdoor units get connected at handover.
Do we need a CTA declaration for AC on a new build?
Usually it's included in the building permit. We handle the F-Gas paperwork on commissioning.