Quick answer
A single-split connects one indoor unit to one outdoor unit. A multi-split serves several indoor units; the permitted number depends on the model. Correct sizing, pipe routing, condensate drainage and noise control matter. Equipment prices alone do not describe the total cost.
Single-split or multi-split for several rooms?
Plan around actual use: three bedrooms used simultaneously with closed doors each need suitable cooling provision. A large hallway unit is not a reliable substitute. For multi-split, check the outdoor unit’s total available capacity when several rooms need cooling at once.
Compare part-load operation, minimum output and maintenance access too. Oversizing does not automatically improve comfort. Ask the installer to explain cooling-load and simultaneous-use assumptions.
What should the quote include?
| Item | Specify | Possible extras |
|---|---|---|
| Sizing | Rooms, loads, models and capacities | Further design and supporting documents |
| Drilling | Position, sealing and making good | Scaffolding, painting or plastering |
| Pipework | Included length, insulation and route | Extra metres and difficult access |
| Condensate | Gravity fall, drain or pump | Pump noise and servicing |
| Electrical work | Responsibility and required connection | Separate electrician |
| Commissioning | Checks, records and instruction | Disposal and future servicing |
Qualifications and handover
Professional or commercial work involving refrigerants is subject to permit requirements; recognised qualifications or work under appropriate instruction can also qualify. Ask who the responsible qualified person is. Association membership alone does not demonstrate a particular permit.
At handover, ask for explanations of controls, filter care, condensate drainage and fault messages. Keep model details, inspection records, warranty conditions and contacts. There is no general requirement for every installer to issue a document specifically called a “FOEN commissioning certificate”.
Frequently asked questions
Can I connect a Quick-Connect system myself?
A marketing description does not replace checking the requirements. Ask a professional which work is permitted for the particular product. Do not open the refrigerant circuit yourself.
How do I obtain comparable quotes?
Send each installer the same floor plan and usage requirements. Compare included work, exclusions, VAT and payment terms rather than just the final price.
Find a suitable installer
Search companies by canton and compare services and coverage. Send the same project description to several installers for comparable quotes.
Find companies by cantonSources and scope
For private households in Switzerland. Manufacturer information applies to the named models. Local requirements and system suitability need individual assessment. Sources link to their original language.
- SIA: SIA 384/4:2025 – Klimakälteanlagen in Gebäuden ↗Checked: 2026-10-30
- Bundesamt für Umwelt: Fachbewilligung für den Umgang mit Kältemitteln ↗Checked: 2026-10-30