Most new-build flats overheat aggressively by August because the fabric was designed for winter, not summer; air-conditioning options are usually constrained by the lease rather than the budget.
Before any kit conversation, the building tells you what is possible. A new-build flat typically presents highly airtight. Most also carry often mvhr-equipped. These facts shape every later decision about comfort.
The most common issue this property surfaces is bedroom overheating, followed by stale air. Any sensible plan addresses those first.
The constraint is permission. Few managed buildings allow an external condenser on the facade, and almost no leases permit penetrations of the structural envelope without freeholder consent. The honest first call is the managing agent, not the installer.
Where the lease allows it, a single split with the outdoor unit on a balcony screened from neighbours is usually the cleanest answer; brackets exist to lift the unit clear of the floor and reduce vibration into the slab below.
Where it does not, a portable monobloc with a sealed window kit is the realistic fallback. The unit is noisier and less efficient than a split, but it cools the bedroom for the eight or nine nights a year that genuinely warrant it and it requires no permission at all.
The published cost range for this work lives in the cost registry, not on this page. The scope it covers is single-room split air-conditioning unit, professionally installed.
Flats are the property type where air-conditioning advice has to start with the lease rather than the kit list. The owners who do best are the ones who establish what is allowed before they price the install, because the difference between a permitted split and a tolerated portable shapes both the budget and the realistic expectation of how cool the room will get.
The knowledge graph
Sourced from the Your Home Climate knowledge engine; every connection updates centrally.