Hampshire · Air conditioning installation
Air conditioning installation in Four Marks, Hampshire
Supply, installation and commissioning of air conditioning for homes and businesses, from one room to a whole building, for Four Marks and the surrounding area. Call for a fixed-price quote; we reply the same working day.
- Commercial rooms that are too warm for staff
- An ageing air conditioning system near the end of its life
- Not knowing which system, size or brand to choose
What affects the cost of air conditioning
Typical ranges are on our prices page, and your quote is built on your job. The quote depends on:
- What we find on the survey or diagnosis
- One-off work versus a regular service cycle
- Whether the existing supply is suitable
Our prices page shows typical ranges, but each job is priced on what it involves. Call for a fixed-price quote, and we will talk you through it.
Helping us quote
A few details help us quote accurately. When you get in touch, it helps to send:
- Where the property is and what kind of building it is
- The make and model of the system, from the label
- A photo of the consumer unit with the cover closed
Every quote shows the VAT clearly, with the rate that applies to your job. VAT can differ between homes and businesses and between kinds of work, so we confirm it on the quote. For a fixed-price quote, call 07833 053749.
Air conditioning in Four Marks
Air conditioning isn’t only for summer: most modern splits heat too. The Energy Saving Trust recognises that air-to-air heat pumps often go by the name air conditioning, and a well-chosen system can earn its keep all year round. Modern air conditioning heats as well as cools: in heating mode they work as an air-to-air heat pump, which is why many owners use theirs all year.
In a place like Four Marks, the outdoor unit often goes on the ground at the side or rear of the house, where it’s tucked away but still easy to reach for servicing.
The records are your system’s health record: a dated account of the work and the readings we took. If anything goes wrong later, it helps the next engineer and the manufacturer and it’s worth keeping safe.
- Where
- Four Marks (GU34)
- Wider area
- Hampshire
- Approvals
- NICEIC and F-Gas
- Quotes
- Fixed after a survey or photos
- Price guide
- £1,200–£2,200 + VAT for one room
- Telephone
- 07833 053749
- Reviewed
- 30 October 2026
After we have gone
Once we have finished, these simple steps help:
- Close windows and doors while the system is cooling
- Do not cover or box in the outdoor unit
- Choose a comfortable set temperature rather than the lowest
We clear up before we go: dust sheets lifted, offcuts and packaging cleared, and the holes for the pipework sealed. Outside, the pipework is neatly fixed and protected, so the job looks as tidy as it works.
Clean the filters regularly, not just at the service. Blocked filters cut airflow and make the system work harder, which costs you more to run.
Questions from Four Marks
Is Four Marks in your area for air conditioning?
Yes. We work across London and the South East from our base in East Grinstead, and Four Marks is part of that. To start, phone us on 07833 053749 or fill in the contact form with a few photos.
Will you come out to Four Marks?
We do. Villages and hamlets get the same service as the bigger towns. A few photos and the postcode are enough to get things started.
Can you fit air conditioning in a leasehold flat?
In many cases, but permissions come first. You will usually need the landlord’s or management company’s consent for the outdoor unit and the pipe route and the lease will say. Permitted development rules for flats are also tighter than for houses, and we flag anything that may need permission. This is general information, not legal advice.
Does air conditioning work as heating?
In most cases, yes: modern splits are usually heat pumps, so they can heat a room in winter. The Energy Saving Trust notes that air-to-air heat pumps are sometimes referred to as air conditioning. We confirm the heating function of the model we quote.
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 manufacturers expect it for their warranty too. We are happy to quote for the full job, supply to commissioning.
What warranty do I get?
Warranty is the manufacturer’s own, on its terms. Each brand sets its own conditions and periods, so we explain them on your quote.
Who is responsible for leak checks?
The operator of the equipment, working with qualified engineers. Systems below 5 tCO2e fall outside the set leak check intervals, while larger ones need checks at least every 12 months, or every 6 months from 50 tCO2e. We can tell you which band your system falls into.
When to call us in Four Marks
Portable units are often where people start, and why they call us. A portable unit has to vent its warm air through a hose out of a window, which lets some heat back in, and its compressor sits in the room with you. A fixed split system puts the compressor outside.
These are the situations we see most often:
- Working from home in a room that gets too warm
- A portable unit with a hose out of the window
- An office, shop or restaurant that is uncomfortable for staff and customers
Living close to Church of the Good Shepherd? Some older properties in parts like that are protected, and the survey finds out whether yours is.
Before booking anyone
- The make and model of any parts or equipment being quoted
- What’s in the price and what is not
- If the figure could change on the day
How it works
Every visit follows the same order: agree the plan on site, protect the area, do the work, test what we have done and explain it all to you. The visit itself takes anything from a day for one room to several days for a multi-room or ducted system. Photos of the existing unit and its label help with repairs and servicing near Four Marks.
- First comes a site survey, or pictures and measurements for a straightforward job.
- The quote is fixed and shows the equipment, where each unit goes and what’s included.
- The units go up and the pipework, cable and condensate drain are run neatly between them.
- We connect the supply, pressure test the pipework and evacuate it before the refrigerant is released.
- We commission the system, show you the controls and leave the F-Gas records and the manufacturer’s warranty details.
Preparing for the visit
- Make sure someone can let us in at the agreed time
- Give us access to the outside wall, roof or yard where the outdoor unit sits
- Let us know if the units are on a roof, a high wall or in a locked area
Get a fixed-price quote
Photos are the fastest route to a quote: the room or the existing unit, the outside wall or roof where the outdoor unit sits or would go, and the label on any existing unit. Add the address and what you’d like done, and simple jobs can often be priced without a visit.
Advice
Nearby places to Four Marks
More services for Four Marks
Air conditioning in Four Marks: the local picture
At about 49 miles from central London, Four Marks sits inside the area we cover across London and the South East. VOA council tax data show about 32% of homes across Four Marks and its surrounding area were built in 2000 or later, and about 87% of households live in detached or semi-detached houses, according to Census 2021 figures. Newer homes usually have cavity walls and loft space that make pipe runs easier, though some estates have planning conditions or covenants worth checking. Houses usually have a side or rear wall with room for the outdoor unit, and a multi-split can serve several rooms from one outdoor unit.
About 2.7 miles north stands Bentworth Hall. Listed homes in any area need consent first, so tell us if yours is one.
Four Marks is about 4 miles south-west of Alton, in Hampshire. Whether you’re in the middle of Four Marks or further out, our engineers cover air conditioning, from small jobs to large ones. Count every place we list in Hampshire and you reach 683, with Four Marks on the list. There’s also a page for Guildford, about 23 miles away.
Not far from Four Marks, a recent job of ours was on Castle Street, Farnham (GU9), about 13 miles north-east: installing a Fujitsu multi-split system serving three offices and a client meeting room. More about it
Local streets include Read's Field, River Close and Chalk Close, and we cover them all. Postcode districts we cover here: GU34. Places around Four Marks that are also on our list: Medstead (1 mile north), Soldridge (1 mile west), South Town (2 miles north-west), New Copse (2 miles north) and Hattingley (2 miles north-west). Within a short drive, we also cover Basingstoke (11 miles north), Winchester (12 miles west), Fleet (15 miles north-east) and Horndean (14 miles south).
Near you in Four Marks
For rail, the closest station is Alton station, roughly 4.6 miles north-east of the centre. A little further out are Barton Castle (3.5 miles north-west) and Alton Community Hospital (3.3 miles north-east). Not far away are Red Hill.
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