Wall-mounted air conditioning in Northolt
Where a home in Northolt faces the street, the outdoor unit usually goes at the rear, out of sight. The urban heat island effect means London bedrooms can stay uncomfortably warm on summer nights.
In a semi or terrace in Northolt, the indoor unit often goes on a back bedroom wall with the outdoor unit on a bracket below. Northolt lies roughly 11 miles from central London, and we cover it as part of London. We cover UB5 and the streets around them.
Prices in Northolt
In London, our guide range for wall-mounted air conditioning is £1,495–£3,895 per room, including VAT. Prices here sit above the national middle, reflecting London labour rates and parking and access costs. Quotes move with the length of the pipe run, where the outdoor unit can sit and how much electrical work the job needs. For reference, the Popular option in Northolt (quieter mid-range unit with Wi-Fi control and better seasonal efficiency for a living room) usually comes to about £2,045–£2,845.
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
The free survey is where the real price is set: room measurements, pipe and drain routes, electrical checks and the outdoor unit position, all written into your quote. On a survey in Northolt the engineer looks at room size, glazing, the route for pipes and drains, the electrics and where the outdoor unit can sit quietly, then the written quote follows.
What is included
What a job in Northolt covers:
- Supply of an R32 inverter unit sized to the room
- Nitrogen pressure test and deep vacuum before commissioning
- Free site survey and room heat-gain check
- Insulated copper pipework, drain and interconnecting cable
- Core-drilled wall penetration and sealed sleeve
Nearby
Close to Northolt, our coverage also includes Greenford (1 mile), Harrow (3 miles) and Southall (3 miles). See all services in Northolt or wall-mounted air conditioning across London.