Portsmouth · Air conditioning repair
Air conditioning repair in Cosham, Portsmouth
One call covers air conditioning repair in Cosham: diagnosis, fixed price, work and sign-off. An F-Gas certified company, NICEIC approved, on Checkatrade.
- Rattling, buzzing or grinding noises
- Ice on the pipework or the coil
- A system that keeps cutting out
The process
Refrigerant work is done by qualified engineers working for an F-Gas certified company, while the electrical side is covered by our NICEIC approval. So on the day, you do not need a separate electrician for the electrical side. On site, it takes as long as the fault needs, from a quick fix to a return visit for parts. Seeing the property in pictures first helps us plan the trip to Cosham.
- Diagnose: test the system until the cause is clear.
- Next, a plain explanation and a fixed price.
- Where a repair doesn’t make sense, you’ll hear it from us, with the alternatives.
- Treat: carry out the repair, sealing any leak before refrigerant goes back in.
- Sign off: prove it works and record the visit.
Before we arrive
- Keep pets out of the rooms we’re working in
- Dig out any previous service or F-Gas records
- Let us know if the building has a permit or sign-in process
Getting a quote
Getting a quote is straightforward. Call or email with a few details and we’ll come back to you the same working day. Where a survey is needed, we arrange a time that suits you.
Advice
How we handle air conditioning repair in Cosham
A sealed system shouldn’t lose refrigerant, so if it’s low, there’s a leak. Topping up without a repair only delays the next breakdown. We locate the leak, repair it, test, evacuate and recharge, then record it in the F-Gas records. We’re often asked to deal with a unit that won’t start and water leaking from the unit or through the ceiling, on heat pumps, ducted systems and wall-mounted split systems.
We prepare for a visit to Cosham from the make and model you give us, and any part that needs ordering is priced before it’s fitted.
Equipment warranty comes from the manufacturer, on its own terms, and we explain those terms on your quote. Each brand sets its own conditions, so we go through them with you rather than leave you to find the small print.
- Place
- Cosham (PO6, PO3, PO2)
- Region
- Portsmouth
- Quote
- Fixed after a survey or pictures
- Accreditations
- NICEIC approved, F-Gas certified
- Costs
- From £75 + VAT call-out
- Phone
- 07833 053749
- Updated
- 30 October 2026
Let and managed properties
Facilities teams in offices, schools and public buildings book us too in Cosham and across Portsmouth. Work can be phased by floor, zone or building to keep disruption down.
Landlords, letting agents and managing agents book us, not only the people who live or work in the property. Let us know who will give us access and who the records should go to, and we’ll keep everyone informed.
Why deal with it now?
If your air conditioning in Cosham has developed a fault, it’s worth booking a diagnosis now. It takes anything from an hour or so to a full day, depending on the fault and the parts, and you get a fixed price for the repair before any work goes ahead, with a 24/7 line for emergencies. Planning ahead for a job near Cosham means we can arrive with everything needed.
No two properties are the same, so we price each one individually. The system, the access, the pipe routes and the parts involved all make a difference.
Why people in Cosham choose us
- Warranty terms set out brand by brand
- MCS certified for heat pumps
- We diagnose before we treat
- A 24/7 emergency line
See our cost guide or our accreditations.
Nearby places to Cosham
More services for Cosham
Cosham questions
Does sea air affect air conditioning in Cosham?
It can. Cosham is within about 1 mile of the coast, and salt air speeds up corrosion on outdoor units. We look for corroded coils, fixings and connections on coastal repairs.
Who do I call if my air conditioning fails in Cosham out of hours?
Yes: ring the emergency line, day or night, from anywhere in Cosham. Say what the system is doing and whether it shows a code, and we will advise on the next step.
Do I need to service the system to keep the warranty?
For some brands, yes. Send us the make and model and we will tell you what the manufacturer expects, and book the service at the interval they recommend.
Is there a survey before the work?
Yes, every time. Diagnosis comes before treatment: the survey tells us what the job needs and how to do it and the fixed price is built on it.
How much does an air conditioning repair cost?
It starts with a diagnosis call-out from £75 + VAT, and then you get a fixed price for the repair. Nothing goes ahead without your agreement.
Why is there ice on my air conditioning pipes?
The coil gets too cold when air can’t move across it or when the refrigerant charge is low. A dirty filter is worth checking first and if that isn’t it, we will find the cause.
How soon will you get back to me?
We reply to enquiries the same working day. If it’s an emergency, ring the 24/7 line instead.
When air con fails in Cosham
Cosham lies within about 1 mile of the sea. On a coastal repair, we look at the outdoor unit for corrosion as well as the fault you called about. In the mile around Cosham’s centre, 2 conservation areas have been designated. Historic England lists about 5 buildings and structures within half a mile of the centre of Cosham, including Wymering Manor (grade II*). For most visits that makes no difference. It only comes up when an outdoor unit has to be replaced on a protected building. VOA council tax data show about 48% of homes across Cosham and its surrounding area date from 1919 to 1939. A photo of the outdoor unit and its surroundings tells us what access the visit needs.
Near Cosham station, as anywhere, a photo of the error code on the controller is the quickest way to start a repair. Schools such as Court Lane Junior Academy can report a fault on the 24/7 line and have non-urgent work done out of term.
Cosham is about 2 miles south-west of Purbrook, in Portsmouth. Properties in Cosham get the same service as everywhere we cover: diagnosis first, a fixed price and proper paperwork when we’ve finished. We cover 19 places across Portsmouth, from busy centres to quieter spots. The nearest of our city pages is Worthing, around 29 miles from Cosham.
Our nearest recent job to Cosham was on East Street, Chichester (PO19), about 12 miles east: installing a Daikin wall-mounted unit in the dining area and a second unit serving the kitchen pass area.
Here we cover the PO6, PO3 and PO2 postcode area. Cosham is on the A397, so it’s easy for us to get to. Nearby, we also cover air conditioning repair in Wymering (1 mile north-west), Hilsea (1 mile south), Drayton (1 mile east), Widley (1 mile north-east) and Paulsgrove (1 mile west). Within a short drive, we also cover Southsea (4 miles south), Milton (3 miles south), Landport (3 miles south) and Portsea (3 miles south-west).
What’s near Cosham
Around Cosham, our work takes us to homes and businesses near The First Post pub, Alexandra Park and Springfield School, among other places. Cosham has its own railway station: Cosham station. A little further out are Tricorn Centre (2.9 miles south) and World War I Remembrance Centre (1 mile south-east). The countryside around Cosham includes Southmoor Nature Reserve and Portsdown Hill.
Owner checks or an engineer?
Owner care supports servicing; it does not replace it. Simple care keeps the air moving through the system, but the refrigerant circuit, the electrics and the parts you can’t see still need an engineer at the interval the manufacturer recommends.
Write down what you notice: error codes, noises, drips, smells or a drop in performance. It makes our diagnosis quicker, and a photo or a short video of the display is even better.
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