Royal Tunbridge Wells was built for taking the waters, not for sleeping through a heatwave. If a top-floor bedroom has been unbearable all week and a fan is just stirring warm air around, here's what actually works in a house like yours, what it honestly costs, and where Coolhouse is up to in TN1–TN4.
Why Tunbridge Wells homes overheat
The town's best feature is also its summer problem. The tall Regency and Victorian townhouses — around the Pantiles, up towards the Common, along the terraces of TN1 and TN4 — have solid brick and rendered walls with no cavity. Lovely in January; less so in a hot spell, when the walls soak up warmth all day and release it into your rooms all evening.
Height makes it worse. In a three- or four-storey townhouse, heat rises floor by floor, so the top bedrooms and any office under the eaves end up warmest — right at bedtime.
A properly installed split system fixes this, and because it's a reversible air-to-air heat pump it also heats a hard-to-heat period room efficiently in winter. One local caveat: Tunbridge Wells has extensive conservation areas and plenty of listed buildings. The outdoor unit sits on an external wall, so placement needs care — often to the rear, out of sight — and it's worth checking with the council before anything is fixed to the house. Check, don't assume; a good installer will treat that as part of the job. Our Victorian and period homes guide covers the detail.
Sort the electrics first
Before anyone talks units, look at your fuse board. Plenty of the town's period homes are still on older consumer units, and a split system wants modern, safe electrics behind it — sometimes that means a new consumer unit before the house can take the extra load.
It's rarely a dealbreaker, just something to price in early rather than discover on install day. An Electrical Installation Condition Report from a local electrician settles the question, and costs little next to the install itself. Can my home's electrics handle air conditioning? walks through what to check.
What it costs — and where we're up to here
For a single room — that top-floor bedroom, say — a wall-mounted split system typically comes in around £1,500–£3,000 fitted, depending on the unit and how far the pipework has to run in a tall house. A multi-split covering three or four rooms is roughly £3,500–£7,000. Most households don't do the whole house; they cool the two or three rooms that actually get hot.
And the straight answer on Coolhouse: we're just opening in Tunbridge Wells and are onboarding vetted local installers now — there's no active network here yet, so we won't pretend to promise next-day quotes. Leave your details via our quick estimate form and we'll match you with a vetted installer as the local network comes online. No barrage of calls in the meantime.