Wall-mounted air conditioning in Stevenage
The East of England is one of the sunniest and driest parts of the UK, which makes glazed rooms and lofts hard to keep cool. A single wall-mounted unit is often all a bedroom or sunny living room in Stevenage needs.
Where a home in Stevenage faces the street, the outdoor unit usually goes at the rear, out of sight. Stevenage sits around 19 miles from Watford, inside our Hertfordshire area. Postcode districts we cover here include SG1.
Prices in Stevenage
In the East of England, our guide range for wall-mounted air conditioning is £1,295–£3,295 per room, including VAT. The East of England is one of the dearer parts of the UK for trades, which shows in the range. What moves a quote in Stevenage up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. Typical Popular work (quieter mid-range unit with Wi-Fi control and better seasonal efficiency for a living room) lands around £1,745–£2,395 in this area.
Essential
Reliable 2.5–3.5 kW unit for a bedroom or study, standard pipe run, basic remote.
Popular
Quieter mid-range unit with Wi-Fi control and better seasonal efficiency for a living room.
Premium
Design-led or very quiet model, larger capacity or concealed pipework through a void.
Guide prices show VAT at 20%. HMRC treats most fixed air conditioners and air-to-air heat pumps installed in homes as energy-saving materials, zero-rated until 31 March 2027 when we supply and fit them. If your installation qualifies, your quote shows 0% VAT and a lower price. Servicing, repairs, cleaning and controls are charged at 20%.
Planning and permissions
Since 29 May 2025, England's permitted development rules allow larger outdoor units (up to 1.5 m³) and no longer require a 1 m gap to the boundary, provided the MCS 020(a) noise check is met. Listed buildings and pitched-roof installs still need permission.
The survey
At the survey we look at how each room is used, where the sun hits it and how the pipes can reach the outside wall, then put it all in a written quote. Surveys in Stevenage cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
Here is what is included on every job in Stevenage:
- Core-drilled wall penetration and sealed sleeve
- Supply of an R32 inverter unit sized to the room
- Handover of the remote, Wi-Fi app (where fitted) and filter cleaning
- Insulated copper pipework, drain and interconnecting cable
- Free site survey and room heat-gain check
Nearby
Close to Stevenage, our coverage also includes Hitchin (5 miles), Letchworth Garden City (5 miles) and Welwyn Garden City (7 miles). See all services in Stevenage or wall-mounted air conditioning across Hertfordshire.