Why Hampshire homes get hot
The south coast is one of the warmer corners of the country, and the housing stock does the rest. Portsmouth's densely packed Victorian and Edwardian terraces — Southsea, Fratton, North End — hold heat in their brickwork long after the sun has gone down. Southampton has similar terraces around Portswood and Shirley, plus plenty of newer waterfront flats where big glazing turns a July afternoon into a greenhouse. Around Basingstoke the problem is different: the large modern estates built from the 1960s onwards are well insulated, which is exactly what you want in January and stifling in a warm spell — especially upstairs bedrooms and loft conversions.
Costs, conservation areas and the practical bits
A modern split system is a reversible air-to-air heat pump: it cools in summer and heats in winter, and it does both efficiently, giving several units of heat or cooling for each unit of electricity you put in. What you'll pay depends on the property and how many rooms you want covered, so rather than quote figures here, our cost guide sets out what installations genuinely cost and where the money goes. One thing worth knowing up front: air-to-air systems aren't covered by the Boiler Upgrade Scheme, which applies to air-to-water heat pumps only.
A few Hampshire-specific points before you get quotes:
- Winchester's historic centre includes conservation areas and listed buildings, so check with the council before an outdoor unit goes on a visible wall. The same caution applies in Old Portsmouth and some older village centres.
- Older terraces sometimes need electrical work before a system can go in — our guide on whether your electrics can handle air conditioning explains what an installer will look for.
- Flats and leasehold homes — common on Southampton's waterfront and across much of Southsea — almost always need freeholder consent for the outdoor unit.
Where Coolhouse is up to in Hampshire
Here's the straight answer: our vetted installers are currently in Hertfordshire, and we haven't yet signed anyone in Hampshire. We're building the network, and we'd rather tell you that plainly than promise a quote we can't deliver this week. If you use our estimate tool, we'll give you an honest picture of what your home likely needs, and we'll get in touch the moment an installer we trust comes on board here — no spam, no passing your details around, just a straight answer when the answer changes.