Hertfordshire · Air conditioning repair
Air conditioning repair in Charlton, Hertfordshire
For fault finding and repair for split, multi-split, ducted, cassette and VRF air conditioning, whatever the brand in Charlton, one call is all it takes: diagnosis, fixed price, work and sign-off. F-Gas certified, NICEIC approved and Checkatrade members.
- A unit blowing warm air
- Water leaking from the unit or through the ceiling
- A flashing light and a system that won’t run
Looking after it afterwards
Here’s the after-treatment advice, short and simple:
- Check the filter, the mode and the set temperature before calling us
- Switch the unit off if water is leaking from it
- Have the system serviced once a year
Where a repair isn’t worth doing, we say so, and explain why. We can quote for a replacement system on the same visit where that’s the better answer.
Use the system sensibly. Moderate settings and a closed room mean less strain, so it isn’t running flat out all day.
Air conditioning repair for homes and businesses in Charlton
Refrigerant doesn’t get used up, so a low charge means a leak somewhere. Simply adding gas means it will leak away again. We locate the leak, repair it, test, evacuate and recharge, then record it in the F-Gas records. If you’re dealing with a suspected refrigerant leak and a unit blowing warm air, we can sort it out.
Outdoor units in a place like Charlton can be near hedges and fields, so leaves, seeds and cobwebs on the coil are worth checking first.
Any work on the refrigerant circuit is recorded: the work carried out, the refrigerant involved and the quantities. Keep the records with the manual and the warranty documents, as a manufacturer or a future engineer may ask to see them.
- Place
- Charlton (SG5)
- Region
- Hertfordshire
- Quote
- A fixed-price quote up front
- Guide price
- From £75 + VAT call-out
- Enquiries
- We reply the same working day
- Credentials
- F-Gas certified company, NICEIC approved
- Telephone
- 07833 053749
- Checked
- 30 October 2026
Other services in Charlton
FAQs for Charlton
Is Charlton in your area for air conditioning repair?
Yes. We work across London and the South East from our base in East Grinstead, and Charlton is part of that. Just phone us on 07833 053749 or use the quote form with a few details.
Do you cover smaller places like Charlton?
Yes, and the size of the place makes no difference to how we work. A few pictures and the postcode are enough to get things started.
Do you protect the property while you work?
Floors and furniture near the work are covered with dust sheets before we start, and the area is kept tidy throughout. Before we leave, we clear up and run through the work with you.
Do you provide F-Gas records?
Yes. It’s your proof of what was done: the date, the work, and any refrigerant added or recovered.
How much is an air conditioning call-out?
Diagnosis call-outs start from £75 + VAT. Once we know the cause, you get a fixed price for the repair before any work goes ahead. The cost depends on the fault, the parts and access to the units.
How quickly will you reply?
The same working day. After that, we agree a survey, diagnosis or installation date that suits you, with a fixed price before work starts.
Why is my air conditioning blowing warm air?
Common causes are a blocked filter, the wrong mode or set temperature, an outdoor unit that can’t breathe, a failed sensor or board, or low refrigerant from a leak. Start by checking the filter and the mode, and if that doesn’t fix it, ring 07833 053749 or drop us a line.
Leave it or put it right?
For a newer system, a fault may be covered on the manufacturer’s terms. Send us the make, model and installation date and we’ll explain how the manufacturer’s terms are likely to apply first. A system that’s left with a fault, or without a service, normally costs more to run.
Whatever the property, the quote works the same way: what’s needed, how we reach it, the parts and the labour. Ask for a fixed-price quote and we will go through it with you.
What you get with us
- Mitsubishi Electric, Daikin, Fujitsu, Panasonic, Toshiba and more
- One contact for properties across the South East and London
- A 24/7 emergency line
- We reply to enquiries the same working day
Read our cost guide and our accreditations and certificates.
Air conditioning repairs in Charlton: local notes
About 31 miles out from central London, Charlton is part of the South East area we work across. Central Charlton is inside the Charlton Conservation Area. There are 5 conservation areas within a mile of the centre of Charlton. On the National Heritage List, around 9 entries fall within 0.5 miles of the middle of Charlton; Maydencroft Manor (grade II*) is one. Day-to-day work on an existing system isn’t affected; a replacement outdoor unit on a protected building might be.
If a system fails at a school such as Highbury Infant School and Nursery, our 24/7 line takes the call, and planned repairs can wait for the holidays.
Charlton is about 1 mile south-west of Hitchin, in Hertfordshire. Across the SG5 area, our engineers can take on air conditioning repair. In Hertfordshire alone we list 381 places, and Charlton is one. London, roughly 31 miles off, has its own page on this site.
Jobs in SG5 are looked at, quoted and booked the same way as anywhere else. If you are just outside Charlton, we cover Gosmore (1 mile south-east), Hitchin (1 mile north-east), Benslow (1 mile north-east), Bearton (1 mile north) and Westmill (1 mile north). Further out, we also cover Hemel Hempstead (15 miles south-west), Stevenage (5 miles south-east), St Albans (13 miles south) and Welwyn Garden City (11 miles south).
What’s near Charlton
Locally, jobs take us to houses, flats and workplaces close to Hitchin Boys' School, The Three Moorhens Public House and Kingshott School, among other places. For rail, the closest station is Hitchin station, about 1.4 miles north-east. A little further out are North Hertfordshire Museum (0.8 miles north-east) and Lister Hospital (3.3 miles east). Open spaces near Charlton include Markham's Hill and Oughtonhead Nature Reserve.
What happens on the day
On the day, we arrive at the time agreed with you and check the plan with you first. Floors and furniture near the work are covered with dust sheets, and the electrics are made safe before any panel comes off. The work itself takes a single visit for many faults, while some repairs need a second visit once parts arrive. We plan the trip to Charlton around you.
- Tell us the make, the symptoms and any error code, and send a photo of the display if you can.
- The engineer reads the fault codes and checks the electrics, airflow, drain and refrigerant circuit.
- We explain the cause and give you a fixed price for the repair before any work goes ahead.
- The fix goes in, with any refrigerant work tested and written into the F-Gas records.
- We run the system, check it’s working properly and note anything else that needs attention.
How to prepare
- Tell us about parking and loading
- Let us know where the consumer unit is
- Give us access to the outside wall, roof or yard where the outdoor unit sits
Getting a price
Some jobs can be priced from photos, while others need a survey. Multi-room systems, commercial buildings and anything with a long or hidden pipe route are normally surveyed first. Either way, the quote is fixed before anything goes ahead.
Read more
Do you need air conditioning repair in Charlton?
Rattles, buzzes and grinding sounds tend to be mechanical. Fan bearings, loose casing, leaves or debris in the outdoor unit and vibrating pipework are typical causes, and some noises point to the compressor.
Keep an eye out for these signs:
- A system that keeps cutting out
- Frost on the pipework
- A unit blowing warm air
Before you call, note what the unit is doing and any code on the controller.
What your quote should include
- Who does the electrical work, and whether they can certify it
- Whether testing, commissioning and paperwork are included
- Whether the quote is a fixed price
A customer’s words
“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