Moving a split is a refrigerant job. The gas is recovered, the pipes are remade or extended, the system is pressure-tested, vacuumed and charged again, and the electrics and drain move with it. A 2026 illustration for shifting an indoor head a short distance in the same room can sit in the high hundreds. Moving the outdoor unit to another wall often costs as much as a large slice of a new install, into the low thousands, because access, brackets and pipe length all change. On an old system, replacement can be the better spend. Use an F-gas certified company. A careful mover beats any badge.
Sliding an indoor head along the same wall
Sliding an indoor unit along the same wall, with a short extra pipe and a drain that still falls, is the small version. You still open the refrigerant circuit, so it is not a furniture move. The finish on the old holes has to be priced. The company that opens those pipes has to be certified under the GOV.UK F-gas rules.
Moving the outdoor unit to another wall
Moving the outdoor unit changes noise, planning, brackets, vibration and usually the pipe length. A longer pipe can mean extra refrigerant weighed in by the certified engineer, not a guess. A shorter pipe can mean removing charge. Both are skilled steps. If the new spot fails airflow or neighbour tests, the move is the wrong purchase.
Recovery, a new drain and tired pipe
Every opened system needs recovery, a pressure test, a vacuum and a recharge. A new drain route is a common hidden cost. Old flares and tired pipe are often replaced rather than reused. Cheap relocation that reuses perished pipe is how you buy a leak.
- Recovery, test, vacuum and recharge on every opened system.
- Outdoor moves need a legal position, not only a free wall.
- Old flares and tired pipe are often replaced rather than reused.
When a new pair costs less than the move
A fifteen-year-old pair that is short of gas, noisy, or on a refrigerant the market no longer sells as new equipment can swallow a relocation budget and still be old. New small splits offered in Britain are R32 matched pairs. You cannot pour a different refrigerant in as a shortcut. Sometimes the honest quote is recovery, disposal and a new system on the wall you actually want. As a 2026 illustration, if the relocation labour, access and gas approach the price of a straightforward new single split (itself often high hundreds to low thousands), ask for both numbers on one page. For a young system and a short move, relocation is often the better spend.
The supply, the consent and a day without cooling
The supply must reach the new indoor position safely. A new circuit, if one is required, is competent-person electrical work. This is not a wiring guide. The outdoor move may need fresh planning thought. Read the Planning Portal air source heat pump notes rather than assuming the old consent travels with the bracket. Budget a day without cooling, and more if a part or a longer pipe has to be ordered.
A flat that already disliked the old hole
Flats need landlord permission for a new hole even when you are only moving plant they already disliked. Often a longer pipe needs more refrigerant, weighed in against the manufacturer data by the installing engineer. It is not a DIY top-up. Energy Saving Trust describes the air-to-air heat pumps you would be moving or replacing.
Frequently asked questions
Can a plumber move the indoor unit if they do not touch the gas?
Not lawfully if the pipes are opened. Relocating a split means handling refrigerant. Use an F-gas certified company.
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How this guide was prepared
This guide was written by the Local AC Installers Editorial Team. We compare official guidance, legislation and established consumer information, separate general information from project-specific advice, and show publication dates and sources. We do not accept installer accreditation claims at face value.