Greater London · Air conditioning installation
Air conditioning installation in Harrow, Greater London
Air conditioning for Harrow and the surrounding area: a survey or diagnosis, a fixed price, careful work and proper paperwork. Ask us for a fixed-price quote.
- Rooms that get too hot to sleep or work in
- Fans and portables that don’t keep up
- Old electric heaters you’d like to replace with something more efficient
Air conditioning installation in Harrow
A new system normally needs a dedicated circuit from the fuse board. Under Part P, a new circuit is notifiable unless a registered competent person does it, and our NICEIC approval means we install and certify it ourselves. Most split systems we fit in Harrow are reversible: in heating mode they work as an air-to-air heat pump, so a system bought for summer earns its keep in winter too.
Most single-room installs in Harrow are done in a day, with multi-room systems taking longer depending on pipe routes, and we leave the room clean and the controls explained.
Space outside is often tight in Harrow, as in much of London, which means a rear wall bracket, a flat roof or a balcony is often the best spot for the outdoor unit. We look at noise towards neighbours and windows as well as looks, and we plan the pipe route so it’s as short and tidy as the building allows.
Some manufacturers make regular servicing by a qualified engineer a condition of their warranty. Where yours does, a regular service with us keeps that side in order and each visit is recorded.
- Where
- Harrow (HA2, HA1, UB5, HA3)
- Region
- Greater London
- Response
- Answered the same working day
- Quote
- A fixed-price quote up front
- Guide price
- Single room from £1,200 + VAT
- Accreditations
- NICEIC approved, F-Gas certified
- Call
- 07833 053749
- Updated
- 30 October 2026
Air conditioning in Harrow: local notes
About 33% of homes in Harrow and the neighbourhoods around it were built between the wars, according to VOA council tax data, and the last census (2021) found about 48% of households live in flats. We check the wall construction on homes of that age, as it decides how the pipework goes through. For a flat, we look at balconies, flat roofs and rear walls for the outdoor unit, and the lease often needs checking first. In London, outdoor unit positions, building rules and access tend to need more planning than the install itself.
If you work from home near Harrow-on-the-Hill station, a home office that overheats is one of the easiest rooms to cool. If your home is in one of the older streets near Church of St Peter, it’s worth checking whether it’s listed or in a conservation area before an install.
Harrow is about 7 miles south of Watford, in Greater London. Our engineers cover Harrow for air conditioning, along with the rest of Greater London. Our area takes in 764 places across Greater London. We also work in London, around 12 miles away.
Not far from Harrow, a recent job of ours was on Richmond Hill, Richmond (TW10), about 8 miles south: installing a Mitsubishi Electric Zubadan multi-split system serving four bedrooms, the study and the living room: six indoor units in total. More about it
That includes properties on High Street, London Road and Perceval Square and nearby roads. Getting to Harrow is easy by the B457 and B458. Places around Harrow that are also on our list: Roxeth (1 mile south), South Harrow (1 mile south), North Harrow (1 mile north-west), Harrow on the Hill (1 mile south-east) and Rayners Lane (1 mile west). Within a short drive, we also cover London (12 miles south-east), City of Westminster (9 miles south-east), Marylebone (10 miles south-east) and Kensington (8 miles south-east).
Near you in Harrow
Locally, jobs take us to houses, flats and workplaces close to Kingsfield Arms, Grange Primary School and Northwick Park. The closest station to Harrow is Harrow-on-the-Hill station, about 0.7 miles north-east. Well-known places in the area include St. George's Shopping Centre (0.7 miles north-east) and Clementine Churchill Hospital (1 mile south-east). Not far away are Islip Manor Meadows and Northala Fields.
What happens on the day
Where something has to be switched off during the work, we agree it with you first, so you can plan around it. In a business, work can often be done one area at a time. On site, it takes a day for most single-room installations, with multi-split, ducted and cassette systems taking longer. The more we can see beforehand, the smoother the visit to Harrow will be.
- We survey the property, or work from your photos for a simple job.
- Each room is sized and the unit positions agreed, then you get a fixed-price quote.
- On the day, dust sheets go down and the indoor and outdoor units are fitted.
- Pipework, cable and drain are run, the circuit is connected and the pipework is pressure tested and evacuated.
- The system is commissioned, the controls explained and the F-Gas records handed over.
Preparing for the visit
- Keep pets out of the rooms we are working in
- Make sure someone can let us in at the agreed time
- Move furniture away from the wall where we’ll be working
Get a fixed-price quote
To help us quote: the address and the type of property, a few pictures, the make and model of any existing system and any symptoms, from error codes to drips. Then give us a ring on 07833 053749 or email us.
Read more
What air conditioning will not do
A few issues sit outside what this work can do:
- A building fabric problem such as single glazing or no loft insulation
- Work that needs permission from a landlord or the council
- Damp from leaks or a lack of ventilation
If you’re not sure, just call us on 07833 053749, or email if that’s easier and we will give you a straight answer before you book.
Where we work
- Multi-split systems
- VRF systems
- Wall-mounted split systems
- Air-to-air heat pumps
- Ceiling cassettes
- Ducted systems
Common questions in Harrow
Can I have air conditioning in a flat in Harrow?
Usually, yes, though leaseholders normally need the freeholder’s agreement. Permitted development rules for flats are tighter than for houses, so we check the outdoor unit position and give you the details to send to the freeholder or managing agent.
Is air conditioning in Harrow permitted development?
It depends on the property. A conservation area takes in the middle of Harrow. Permitted development only covers heat pumps that are not used solely for cooling, and not within the grounds of a listed building. Conservation areas add limits on outdoor units facing a road. Where necessary, we check with the local planning authority (for Harrow, normally Harrow council).
Do you work for landlords and businesses?
Yes. Homeowners, landlords, agents and businesses all book us in Harrow and across Greater London. Tell us who should receive the paperwork.
When will I hear back?
We reply to enquiries the same working day. For a breakdown that can’t wait, call our 24/7 emergency line.
Will you work on another installer’s system?
Yes. We work on systems fitted by other installers as well as our own, on all the main brands. Send us the make and model, and any records you have.
Which type of air conditioning is best?
Number of rooms, space outside and how much of the unit you want to see all decide it. Ducted units need a void or loft, and cassettes need a suspended ceiling and the survey confirms what’s possible.
Whose job is it to check the system for leaks?
The F-gas rules share it between the equipment’s operator and the engineers who work on it. The interval depends on the refrigerant charge, measured in tonnes of CO2 equivalent: at least every 12 months from 5 tCO2e, and every 6 months from 50 tCO2e.
What else we do in Harrow
Pricing air conditioning in Harrow
Before we fix a price, we need to know a few things. We look at:
- Whether the existing supply is suitable
- The pipe route between the units
- One-off work versus a regular service cycle
The pipe route, the height of the units and how we reach them all affect the cost. We take each of them into account, and the price is fixed before work begins.
What to send for a quote
What to send for a quote:
- A photo of the consumer unit with the cover closed
- The outside wall, roof or yard where the outdoor unit sits or would go
- Photos showing the indoor unit and the space around it
Photos are enough for some jobs; others need a visit first. Bigger systems, commercial sites and awkward pipe routes are normally surveyed on site. Either way, you get a fixed price before any work is booked.
Looking after your system
Once we have finished, these simple steps help:
- Clean the filters every few weeks when the system is in heavy use
- Refit filters properly after cleaning
- Book an annual service
Commissioning is the last stage: every mode is tested before we go. We check it’s running as the manufacturer intends, then show you the controls and the timer so you know how to get the best from it.
Report drips, noises or error codes early. Water from the indoor unit, a new rattle or a code on the display typically means something needs attention, and early repairs are normally simpler.
A customer’s words
“Very professional from the initial survey through to installation. The engineer explained everything clearly and the quote was exactly what we paid. Would not hesitate to recommend AirCon Doctor.”
David W., Haywards Heath