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, and we work in EN4 regularly.
Accredited, and fitting the brands you know
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.
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.
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.
Nearest postcodes we also cover: Whetstone N20, 1.3 miles; Southgate N14, 2.2 miles; North Finchley N12, 2.8 miles.
Cockfosters and East Barnet sits in Barnet, and the borough page covers the rest of it. All the areas we cover.
More of our work near EN4
The finished jobs closest to Cockfosters and East Barnet, nearest first, after the one above.
Heat pump
EN4
Cockfosters
Vaillant aroTHERM plus 7 kW air source heat pump
Replaced an old gas boiler in three days. Raised on feet over a gravel bed at the side of the garden, so the defrost water drains away rather than pooling round the base.
View the project
Heat pump
N14
Southgate
Vaillant aroTHERM plus air source heat pump
A gas boiler out and a heat pump in over three days, a few streets from our own base. The unit stands beside the garden decking on anti-vibration feet, with the pipework taken along the fence line.
View the project
Heat pump
N12
North Finchley
Samsung air source heat pump with hydrobox
Heat pump and hydrobox both outside in the side passage, which keeps the whole system out of the house and leaves the cupboard the old boiler used.
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Air conditioning
N11
New Southgate
Daikin multi-split condenser
Wall-mounted on brackets rather than stood on the ground, which is usually what a narrow side return leaves you, and the refrigerant lines dropped in a single trunked run.
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Heat pump and solar
N21
Winchmore Hill
Air source heat pump with roof-mounted solar
The panels sit across the rear pitch and the heat pump at the side of the house, which is the pairing that lets the pump run on its own generation through the middle of the day.
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Heat pump
N21
Winchmore Hill
Mitsubishi Ecodan air source heat pump
An Ecodan stood off the boundary fence far enough that the fan discharge is not bouncing straight back off it, which is what makes a badly sited unit sound louder than it is.
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Heat pump
NW7
Mill Hill
Vaillant aroTHERM plus air source heat pump
Gas boiler to heat pump in three days, with the grant approved within 48 hours. The unit stands on anti-vibration feet on a concrete pad close to the house, which keeps the pipe run short.
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Heat pump
N22
Wood Green
Samsung monobloc air source heat pump
Stood on a levelled base built up out of the border rather than on soil, so the feet stay out of standing water and the unit does not settle out of level over a winter.
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Your estimate
£2,400to£3,200
Supplied, fitted, commissioned and certificated. Includes VAT.
Send this on WhatsAppPrice a Cockfosters and East Barnet installation
Our own rates, from the quotations we issued this year. Rooms first, because it is the biggest lever.
Last step: where do we send your written price?
Every figure on this site is an estimate built from the quotations we issued in 2026 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 fit in EN4
Cooling is most of what we do in Cockfosters and East Barnet. The same engineers fit heat pumps with the grant, solar panels and batteries, and service any make.
Split air conditioning
One room or the whole house. Domestic and commercial.
See what it costs
Air source heat pumps
Replaces the gas boiler. We take the 7,500 pound grant off your invoice.
Price my heat pump
Servicing and repair
Book a service
Ducted air conditioning
The unit sits in the ceiling void. Only the grilles show.
How it is fitted
Solar panels
Get a roof survey
Battery storage
See if it paysAir 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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