Air conditioning
in Cockfosters and East Barnet EN4
1930s semis and detached houses with wide plots, and the flat-roofed extensions that come with them. The photograph here is a pair of machines in cascade on one of those roofs.
From £2,400 fitted. We work in EN4 regularly.
Brands we work with
We install, service and repair air conditioning across Cockfosters and East Barnet EN4. A single room is £2,400 to £3,200 fitted and a whole house is £8,400 to £11,300, with a free survey and a written price that does not change.
A three or four room multi-split in a detached house, condenser at ground level or on a flat roof with a frame. Two to three days.
A job we did in EN4
Barnet EN4
Cascade pair of air source heat pumps
Two machines in cascade on a flat roof, flow and return in insulated copper with isolating valves on each leg, so one can be shut down and worked on while the other keeps the building warm.
What the housing in Cockfosters and East Barnet means for the job
EN4 is Cockfosters, East Barnet, New Barnet and Hadley Wood, and the plots are wider than almost anywhere else we work. Interwar semis and detached houses with side access and deep gardens mean an outdoor unit position is rarely a constraint, and the rooms are large enough that sizing matters more than positioning. The other recurring feature is flat-roofed rear extensions, which are both a common place to put plant and a common reason to need a proper frame and load spreading rather than feet on a membrane.
Worth knowing before you book. A flat roof position needs the load spread and the covering left intact. A condenser standing directly on a felt or single-ply membrane will damage it, and that is a roofing bill rather than an air conditioning one.
Price a Cockfosters and East Barnet installation
Our own rates, from the quotations we issued this year. Rooms first, because it is the biggest lever.
£2,400to£3,200
Supplied, fitted, commissioned and certificated. Includes VAT.
Every figure on this site is an estimate based on published UK market ranges and our own installation experience. It is not a quotation. The price you are given after the free survey is the price you pay.
Everything we do in EN4
Cooling is most of it. Since 2026 the same machine also heats, and we fit the renewables side too.
Installation
Wall units, ceiling cassettes and concealed ducted, one room or a whole house.
Servicing
Annual service from £95 plus VAT, any make, whoever fitted it.
Repair
£89 plus VAT to diagnose, waived if we do the work.
Heating too
The same unit is an air-to-air heat pump. It heats at three to four times the efficiency of an electric heater.
Cockfosters and East Barnet sits in Barnet, and the borough page covers the rest of it. All the areas we cover.
Air conditioning in Cockfosters and East Barnet: common questions
Can the unit go on my flat roof?
Yes, on a frame that spreads the load and leaves water running freely underneath. It is a common and perfectly good position in EN4.
It adds £300 to £750 over ground level, for the frame and the extra labour at height.
Is Hadley Wood different?
Larger houses, longer pipe runs and more rooms, so the jobs are bigger. The engineering is the same.
Pipework past twenty-five metres is £30 a metre, and on a house that size it is worth measuring rather than estimating.
Do you fit systems for whole houses?
Regularly. Whole house systems covers what three and four bedroom houses actually cost.
A four room job is £8,400 to £11,300.
Book a free survey in Cockfosters and East Barnet
A surveyor measures the rooms, checks the electrics and the outdoor position, and writes a fixed price. No cost, no obligation, no salesperson.
Monday to Friday 9am to 7pm, Saturday 10am to 3pm, Sunday closed
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