Kent · Air conditioning installation
Air conditioning installation in Northfleet, Kent
Air conditioning in and around Northfleet, from the first look to the final check and a fixed price agreed before we start.
- An old system that needs replacing
- Fans and portables that don’t keep up
- A study or office that overheats during the day
What air conditioning will not do
Not every problem is solved by air conditioning, and we’d rather say so up front. It won’t put right:
- Gas boiler or central heating faults (we do not work on gas boilers)
- An installation that needs consent nobody has given yet
- Damp from leaks or a lack of ventilation
If in doubt, call 07833 053749 or write to us at info@aircondoctor.co.uk and we’ll say what we think before you book.
What we work on in Northfleet
- Wall-mounted split systems
- VRF systems
- Ceiling cassettes
- Air-to-air heat pumps
- Ducted systems
- Multi-split systems
About our air conditioning in Northfleet
A single-room split system is typically £1,200–£2,200 + VAT, while a two-room multi-split is typically £2,800–£4,500 + VAT and three to five rooms £4,500–£8,500 + VAT. Supply, installation, commissioning and F-Gas documentation are all included, with commercial and VRF systems priced after a survey. Every installation in Northfleet begins with a look at the rooms, the walls and where the outdoor unit can go, followed by a fixed-price quote with the brand, model and every part of the job set out.
Many installs in Northfleet can go ahead as permitted development, but listed buildings, conservation areas and flats often need consent first: we flag that at the survey.
Northfleet has a mix of older and newer homes, and the walls decide a lot about the install. Solid walls take longer to core drill than cavity walls, while a loft space can hide pipe runs that would otherwise be on the outside.
AirCon Doctor is an F-Gas certified company and NICEIC approved for electrical work, MCS certified for heat pumps and a Checkatrade member. Our engineers hold the F-gas qualifications needed to work on refrigerant.
- Where
- Northfleet (DA11)
- Region
- Kent
- Quotes
- Fixed, in writing
- Replies
- We reply the same working day
- Prices
- One room: £1,200–£2,200 + VAT
- Certified
- NICEIC and F-Gas
- Call
- 07833 053749
- Page updated
- 30 October 2026
Towns and villages near Northfleet
What else we do in Northfleet
What affects the quote in Northfleet
You’ll get a fixed price before we start. It’s based on:
- Whether we need access equipment for high-level work
- What kind of system it is
- The size of the job
Every job is different, so we price each one individually. The system, the access, the pipe routes and the parts involved all make a difference.
What to send for a quote
A few details help us quote accurately. When you get in touch, it helps to send:
- A short video of any fault, such as a noise or a flashing light
- Photos showing the indoor unit and the space around it
- The postcode and whether it’s a home, flat or business
VAT is set out clearly on every quote, and the rate that applies to your job is stated. Homes, businesses and different kinds of work can be treated differently for VAT, so we confirm it on the quote. To get one, call 07833 053749.
What owners can safely do
Never try to top up, release or handle refrigerant yourself. The law requires anyone working on equipment containing F gas to hold the right qualifications, and the company to be certified, and refrigerant lines can cause cold burns. If you suspect a leak, switch the system off and call us.
Don’t move, re-route or disconnect units or pipework yourself. Disconnecting a system means dealing with refrigerant, which only a qualified engineer can do, and the electrics need care too. Ask us to quote for a move instead.
How the visit works
Think of the visit in three stages: look, put right and sign off. First comes a careful look at the system or the space, then we do the work, and finally we test, record and explain. Most of the time goes on the middle part, and that takes anything from a day for one room to several days for a multi-room or ducted system. A visit in Northfleet is booked for a time that suits you.
- You send photos, or we visit and survey the rooms and outside.
- The system is sized, positions are agreed and the price is fixed.
- Sheets go down first, then the indoor unit and the condenser are mounted.
- Connections are made, checked for leaks and pulled down to a vacuum.
- It’s switched on, checked and handed over with its records.
How to prepare
- Make sure we can reach the outdoor unit, or where it will go
- Make sure someone can let us in at the agreed time
- Tell us about access, such as roof hatches, high walls or locked plant areas
Getting a quote
If you need air conditioning in Northfleet, call us on 07833 053749 or use the quote form. Tell us what kind of property it is and what you’d like done, and send a few pictures if you can. Enquiries get a reply the same working day.
Read more
Air conditioning in Northfleet: the local picture
The coast is only about 3 miles from Northfleet. That is worth knowing for an install, as salt air speeds up corrosion on outdoor coils and fixings, so we choose the position and fixings with that in mind. About 37% of households live in terraced houses, according to the last census (2021). Terraces have little side access, so the outdoor unit normally goes on the rear wall or a flat roof, with the pipe run kept short.
Homes near Church of All Saints are a good example of where we look up the heritage status of the building before fixing anything to it. With historic houses such as Cobham College about 3.7 miles south-east, it’s a reminder that older homes nearby may be listed, which changes the planning rules.
Northfleet is about 5 miles east of Dartford, in Kent. Properties in Northfleet get the same service as everywhere we cover: a look at the job first, a fixed-price quote and written records at the end. We cover 922 places across Kent, large and small. You can also see our page for Bromley, roughly 14 miles from Northfleet.
Not far from Northfleet, a recent job of ours was on Station Road, Orpington (BR6), about 11 miles west: installing three Daikin cassette units in the main office area and a wall-mounted unit in the client meeting room. Read more
If your postcode is in DA11, the property is within reach. Northfleet is on the A2 and A226, so it’s easy for us to get to. Close to Northfleet, our area also takes in Painters Ash (1 mile south-west), Springhead (1 mile west), Windmill Hill (1 mile east), Northfleet Green (1 mile south) and Gravesend (1 mile east). Further out, we also cover Maidstone (14 miles south-east), Dartford (5 miles west), Sevenoaks (13 miles south-west) and Swanley (8 miles west).
Near you in Northfleet
Around Northfleet, our work takes us to homes and businesses near The Six Bells pub, Saint George's Church of England School and Copperfield Academy and the streets around them. Northfleet’s nearest station is Gravesend station, about 1 mile north-east. A little further out are Bluewater (3.3 miles west) and Stone Castle (3.1 miles west). Not far away are Chafford Gorges Nature Park and Sawyers Lake.
Questions from Northfleet
Is the coast a problem for outdoor units in Northfleet?
It can. Northfleet is within about 3 miles of the coast, and salt air speeds up corrosion on outdoor units. We site outdoor units out of the worst of the sea wind where possible and can suggest models with corrosion protection where the manufacturer offers it.
Is planning permission needed for air conditioning in Northfleet?
There’s no single answer: the building and the outdoor unit position decide it. Around 9 listed entries sit within 0.5 miles of central Northfleet. An air-to-air system used for heating as well as cooling can be permitted development on a house if it meets the conditions, but a cooling-only unit isn’t covered, listed buildings need consent and conservation areas restrict outdoor units facing a road. Where necessary, we check with Gravesham council, which is usually the planning authority for Northfleet.
Can I fit air conditioning or a heat pump myself?
The refrigerant side has to be done by a qualified engineer working for an F-Gas certified company. That is a legal requirement, and it also matters for the manufacturer’s warranty. We are happy to quote for the full job, supply to commissioning.
How do you size the system?
It depends on the room, not only its floor area. Glazing, orientation, the roof and what goes on in the room all affect it, and we take them all into account on the survey.
How long does it take to fit air conditioning?
A single-room system is normally fitted in a day. Multi-room and ducted systems take longer, depending on the pipe routes and access, and we tell you how long on the quote.
Do you offer maintenance contracts?
Yes. Send details of the systems and how they’re used and we will propose a schedule and quote for it. That can include the leak checks the F-gas rules require for larger systems.
Do you provide F-Gas records?
Yes, always. New installations come with commissioning details, F-Gas records and warranty information, while repairs and services get a written note of what was found and done.
From one of our customers
“Excellent service from start to finish. Two wall-mounted units installed in our home. Clean, tidy work: they protected all the floors and left no mess. The systems work brilliantly. Would highly recommend.”
Sarah M., East Grinstead