Oxfordshire · Air conditioning installation
Air con installers in Lower Assendon
Air conditioning for Lower Assendon and the surrounding area: diagnosis first, then a fixed-price quote, the work and written records. Call for a fixed-price quote.
- Portable units that are noisy and barely cope
- Rooms that get too hot to sleep or work in
- An ageing air conditioning system near the end of its life
Air conditioning in Lower Assendon, done properly
Mitsubishi Electric, Daikin, Fujitsu, Panasonic, Toshiba, LG, Samsung, Mitsubishi Heavy Industries and Hitachi are among the brands we fit. The survey ends with a recommendation and the reasons for it, and the manufacturer’s warranty terms are set out on your quote. Need an air conditioning installer for Lower Assendon? We are based in East Grinstead and cover London and the South East, with a fixed-price quote before any work starts.
New circuits are done by our NICEIC approved electricians, so the electrical paperwork comes with the installation.
For a home in or near Lower Assendon, an air-to-air system can cool in summer and heat in the cooler months, which suits garden rooms, lofts and extensions that the main heating struggles with.
For a fault on a system that may still be under warranty, send us the make, model and installation date. We’ll explain how the manufacturer’s terms are likely to apply before anything chargeable is done.
- Location
- Lower Assendon (RG9)
- Wider area
- Oxfordshire
- Credentials
- F-Gas certified, NICEIC approved
- Price guide
- Single room from £1,200 + VAT
- Quotes
- Fixed after a survey or pictures
- Call
- 07833 053749
- Updated
- 30 October 2026
What happens on the day
The first job on site is protection: sheets over the floor and any furniture nearby and nothing is moved without asking you. After that, anything electrical is made safe and we start. It takes a day or more, depending on the number of rooms, the pipe routes and the access, and we tidy up before we leave. We plan the trip to Lower Assendon around you.
- You send pictures, or we visit and survey the rooms and outside.
- The system is sized, positions are agreed and the price is fixed.
- We protect the area, then fit both halves of the system.
- 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.
Getting ready for the visit
- Have the make and model of any existing unit to hand
- Tell us about access, such as roof hatches, high walls or locked plant areas
- Arrange for someone to be there to let us in
Getting a price
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.
Read more
What air conditioning cannot fix
A few issues sit outside what this work can do:
- A room that can’t take an outdoor unit or pipe route without the landlord’s, management company’s or council’s consent (that consent comes first)
- Building damp that has a structural cause
- Gas boiler or central heating faults (we do not work on gas boilers)
If you are not sure, just phone us on 07833 053749 or write to us at info@aircondoctor.co.uk and we’ll give you a straight answer before you book.
What the work covers
- Ceiling cassettes
- Air-to-air heat pumps
- Ducted systems
- Multi-split systems
- Wall-mounted split systems
- VRF systems
How the job changes from property to property
Pipework and condensate drains
Cooling produces water as the air is dried, which the condensate drain takes away. Where it can’t fall naturally to a drain, a condensate pump lifts it, and we plan that on the survey.
Multi-split systems
Two rooms on a multi-split are typically £2,800–£4,500 + VAT, and three to five rooms £4,500–£8,500 + VAT. The route from the outdoor unit to each room is the main variable.
Nearby places to Lower Assendon
More services for Lower Assendon
What we’re called out for in Lower Assendon
Rooms overheat mostly because of heat they gain during the day. Sunshine through glazing, especially on south and west-facing rooms, adds a lot of heat, and the heat lingers long after the sun has moved round.
What we’re most often called about:
- Too many options and no clear advice
- Rooms heated by plug-in heaters
- A loft conversion that’s too warm to use
About 1.6 miles south-west stands Greys Court. Listed homes in any area need consent first, so tell us if yours is one.
Questions to ask before you book
- Whether you get F-Gas records where refrigerant is involved
- Whether a new circuit is included and who certifies it
- If the figure could change on the day
Your questions about air conditioning in Lower Assendon
Is air conditioning in Lower Assendon permitted development?
That depends on the building and where the outdoor unit goes. There’s a conservation area, the Henley Conservation Area, close to central Lower Assendon. Since 2025, an air-to-air heat pump on a house can count as permitted development if it meets the conditions and is not used only for cooling. Listed buildings still need consent, and in a conservation area a road-facing wall or roof is not allowed under those rules. If there’s any doubt, we ask the local planning authority (for Lower Assendon, normally Buckinghamshire council).
Do you cover smaller places like Lower Assendon?
Yes, and the size of the place makes no difference to how we work. We are based in East Grinstead and plan each visit so the job can be finished in one trip where possible.
How long does it take to fit air conditioning?
Most single-room systems take a day. Multi-room and ducted systems take longer, depending on the pipe routes and access and the quote says how long to expect.
Do you offer emergency call-outs?
Yes, any time. For anything urgent, such as a system failing in a server room or water leaking from a unit, ring our 24/7 line and we’ll tell you what to do first.
Do you offer maintenance contracts?
Yes. We offer maintenance contracts, with visits at the interval your system and the manufacturer need. Each visit is written up, with F-Gas records where refrigerant work is involved.
Can air conditioning heat my home as well?
In most cases, yes. Running as a heat pump, it moves heat in from outside rather than making it from electricity alone. To replace your main heating, there are extra conditions, including for the £2,500 Boiler Upgrade Scheme grant for air-to-air heat pumps.
Do you work for landlords and businesses?
Yes. Homeowners, landlords, agents and businesses all book us across London and the South East. Let us know who the records should go to.
Homes in Lower Assendon and air conditioning
About 41% of homes across Lower Assendon and its surrounding area date from 1945 to 1972, according to the Valuation Office Agency’s council tax figures. We check the wall construction on homes of that age, as it decides how the pipework goes through.
Homes near Church of St Anne are a good example of where we look up the heritage status of the building before fixing anything to it.
Lower Assendon is about 6 miles north of Caversham, in Oxfordshire. For air conditioning in and around Lower Assendon, please phone 07833 053749 or email us for a fixed-price quote. We work across London and the South East, including Lower Assendon. In Oxfordshire alone we list 443 places and Lower Assendon is among them. Guildford, roughly 26 miles off, has its own page on this site.
Old Bix Road and Fair Mile and the roads off them are all inside our area. If your postcode is in RG9, you’re inside the area we cover. Places around Lower Assendon that are also on our list: Middle Assendon (1 mile north-west), Bix (1 mile north-west), Fawley Bottom (1 mile north), Fawley (1 mile north-east) and Henley-on-Thames (2 miles south-east). Larger places within reach include Didcot (14 miles west), Thame (13 miles north), Benson (9 miles north-west) and Chinnor (10 miles north).
Landmarks near Lower Assendon
We fit and service air conditioning in homes and premises around Golden Ball Public House, Fawley Court and Temple Island and Gillotts School, among other places. For rail, the closest station is Henley-On-Thames station, about 1.9 miles south-east of the centre. Other landmarks nearby include Frazer Nash Archives (2.2 miles south-east). Green spaces nearby include Warburg Nature Reserve.
What a customer said
“Office air con broke down in the July heatwave. Called at 8am, engineer was here by noon and fixed within 2 hours. Brilliant emergency response. They now hold the service contract for the whole building.”
James T., Crawley, office manager