Why Cardiff homes struggle in warm weather
Much of Cardiff's housing was built long before anyone worried about keeping it cool. The Victorian and Edwardian terraces that fill Cathays, Roath, Canton and Grangetown — and plenty of Barry and Penarth besides — have solid brick walls that soak up heat over a warm week and let it go slowly at night. Bedrooms under slate roofs stay stuffy long after the street outside has cooled, and loft conversions are usually the hottest rooms in the house. If that sounds like your place, our guide to air conditioning in Victorian homes was practically written for it.
The newer stock has the opposite problem. Cardiff's apartment sector has grown fast, from Cardiff Bay to the city centre, and many flats pair large glazed areas with windows that barely open. They can be uncomfortable on days when a terrace copes fine.
What to check before you get quotes
We are not going to print prices here, because the honest answer is that it depends on your rooms, your walls and your electrics, and a number on a web page rarely survives contact with a real survey. Our cost guide explains what actually drives the price. One thing worth knowing: a modern split system is a reversible air-to-air heat pump, so the same unit that cools in July can heat you through a damp Welsh January.
- Older terraces often need their electrics looked at first. Ask an electrician about the condition of your wiring and consumer unit before anyone quotes — it can change the size of the job.
- Flats and leasehold homes almost always need freeholder consent for an external unit. In Cardiff Bay and city-centre blocks, start that conversation early; it is usually the slowest part.
- Some streets in Penarth and central Cardiff fall within conservation areas. Check with the council before fixing anything to an outside wall, rather than assuming either way.
Where Coolhouse is up to in Cardiff
Honestly: we are not live in Cardiff yet. Our vetted installer network currently covers Hertfordshire, and we are building it out region by region. What we can usefully do now is take your details, so that when Cardiff installers come on board and pass our vetting, you are first in the queue — and if you ask in the meantime, we will tell you plainly where things stand rather than promising a quote we cannot deliver. Register your interest through our estimate form. Our guides are free and apply anywhere, and most of Cardiff's terraces are exactly the houses they were written for.