Cooling designed for London buildings and their rules

London summers have made cooling a genuine requirement rather than a luxury, particularly in top-floor flats, glazed extensions and commercial space. GEM designs and installs air conditioning systems that are sized correctly, sited discreetly and, critically for leasehold and conservation contexts, specified with the consents and acoustics in mind from the start.

Consents before condensers

In a flat, an external condenser usually needs the freeholder's consent, and sometimes planning permission, particularly in conservation areas where visible plant is restricted. We flag the consents needed during the survey, prepare the technical details for the application, and design around the constraint where a visible unit will never be approved: discreet siting, acoustic enclosures or low-noise units that meet the terms of a lease. Skipping this stage is how installations end up removed at the owner's cost a year later.

Sizing and siting done properly

An undersized system runs flat out and still disappoints; an oversized one short-cycles and dehumidifies badly. We calculate loads from the actual room, glazing and orientation rather than a rule of thumb per square metre, then site internal units where airflow works and external units where neighbours and lease terms stay happy. We install split and multi-split systems from the established manufacturers.

For anyone weighing a portable unit against a fixed installation, the physics is one-sided: a portable machine exhausting through a window gap fights its own intake and costs more per degree of cooling than a properly installed split system, which also runs at a fraction of the noise. Multi-splits let one discreet external unit serve several rooms, which is frequently the only workable design on a lease that permits a single condenser.

Servicing, F-Gas and keeping systems efficient

F-Gas regulations require documented handling of refrigerants; our engineers are certified and every service visit is logged against the asset so your records stand up to inspection. Annual servicing covers refrigerant checks, filter and coil hygiene, condensate management and electrical inspection. Neglected filters and coils quietly raise running costs long before a system visibly fails, which is why the boring annual visit is the cheapest part of owning cooling. Blocked condensate drains are the classic summer failure, announcing themselves as a ceiling stain under a unit that ran perfectly the day before, and a serviced system simply does not get there.