Air conditioning installation in Reading

The hottest homes in Reading are often the newest ones. The town has built flats and estate houses at pace for two decades, and the recipe that makes a new home cheap to heat (airtight construction, thick insulation, large glazed areas to meet daylight standards) is the same recipe that traps summer heat. Building Regulations only began addressing overheating directly with Approved Document O, which applies to new residential buildings approved from mid-2022 onwards [1]. Almost everything built in Reading before then, from the canal-side apartment blocks to the estate houses on the town's southern edge, was designed with no overheating requirement at all.

The usual complaints follow from that: a south-facing bedroom on a newer estate that is still warm at midnight, or an apartment living room behind full-height glazing that overheats from May to September, with windows that barely open onto traffic noise. The fix is well understood: a properly sized system installed by a certified engineer. Our cost guide sets out typical prices.

Why new builds overheat, and what that means for sizing

An airtight, well-insulated house holds whatever heat gets in. Solar gain through glazing is the dominant input, and design guidance calculates it per window, per orientation, alongside occupancy and equipment loads [2]. In a new build that has three consequences. The calculated cooling load is often smaller than the room's size suggests, so be wary of an installer who sizes by floor area and lands on a big unit "to be safe": an oversized unit short-cycles, controls humidity poorly and costs more. The load arrives fast, because a south- or west-facing room with big glazing heats up within an hour of direct sun, so airflow matters as much as raw capacity. And the heat leaves slowly, because an airtight house does not cool overnight the way a draughty one does.

There are new-build installation questions too. Timber-frame and thin-joint blockwork walls need the right fixings for a condenser bracket; some developments carry covenants requiring management-company consent for external equipment; and an NHBC or similar warranty is worth checking before anyone drills the envelope. The new build guide covers all three.

The Victorian terraces are a different job

Reading's older neighbourhoods (the terraced streets of Katesgrove and Newtown, the roads off the Oxford Road in west Reading, the older parts of Caversham) sit at the opposite pole. The fabric leaks heat, so the summer problem is usually a top-floor bedroom under an uninsulated roof, or a rear kitchen extension in full afternoon sun. Solid nine-inch brick walls take a core drill without complaint, and the craft is concealment: pipework dropped through cupboards and floor voids, trunking colour-matched to brickwork, the condenser on a rear wall or a ground stand in the yard rather than on the street elevation. The period home guide shows what a tidy job looks like.

Ceiling height is the sizing trap here. A 3m Victorian ceiling holds a quarter more air than the 2.4m that rules of thumb assume, which is one more reason to ask for a written room-by-room calculation; the sizing guide explains what that should include. On a terrace the condenser also sits close to neighbouring windows, so unit selection and mounting (anti-vibration feet, sensible height, no reflective corner siting) matter for noise.

Flats and riverside apartments: permission before pipework

Along the Thames and the Kennet, and around the station, Reading has a large stock of apartments, many with full-height glazing that makes riverside living bright in January and punishing in July. The engineering is usually straightforward; the permissions are not. Permitted development rights for outdoor units do not extend to individual flats, so a flat usually needs planning permission from Reading Borough Council, and before that it needs freeholder or management-company consent to fix anything to the building [3][4]. Balconies can sometimes host a condenser where the lease allows; where nothing external is permitted, the options are a portable unit or a through-wall system, each with real trade-offs. Start with the flat guide, and start the consent conversation early: it is the longest lead-time item in the project, and it is why flat quotes follow the lease review rather than precede it.

The home office

Reading's business campuses around the M4 mean plenty of people work from home part of the week, and a home office is a distinctive load: occupied eight hours a day, several hundred watts of computing and screens, and a quiet requirement driven by calls rather than sleep. A unit sized for the equipment gain, with a low fan-speed sound level and airflow directed away from the desk, is the answer; the home office guide covers placement. If the office shares a floor with bedrooms, a two-room multi-split can serve both from one condenser, and the bedroom guide explains the low-speed noise figure to ask for.

Matching the system to the house

Undecided? The cooling planner narrows it down in a few questions.

The rules in brief

New systems use R-32 or R-290 refrigerant, and only an F-Gas certified engineer can work on the circuit; the installer guide covers what to check. For houses, an outdoor unit can be permitted development if it meets the siting and noise conditions, while a cooling-only unit, a listed building or a flat generally needs permission; the planning permission guide sets out the rules, and Reading Borough Council's planning pages settle specific addresses, including conservation areas in the town centre [4].

Questions Reading homeowners ask

Our new build is only three years old. Should overheating be the developer's problem? If the building was approved after Approved Document O took effect in 2022, it should have been designed against overheating and a complaint may be worth pursuing [1]. Most of Reading's stock predates that, and retrofit cooling is the practical answer.

Can I install air conditioning in a rented flat or shared-ownership home? You need the landlord's or housing provider's written consent, plus the freeholder and planning consents any flat needs. Shared owners should check the lease's alterations clause first.

How long does an install take? One room in a house: typically a day. Two or three rooms: two to three days. Flats take longer end to end because consent, not labour, sets the timetable.

Can one system heat the home office in winter? Yes. A modern split is a reversible air-to-air heat pump, so it can heat one occupied room on demand without running the whole house's heating.

Next steps

Guildford's larger family houses and London's flats each get their own page. For Reading, request an installer match, note which rooms overheat and when, photograph the window wall and any external constraint, and if you are in a flat, open the freeholder conversation now. We'll review your requirements and match you with a suitable installer operating in your area.