Air conditioning repairs in Dartford
Has your Dartford air conditioning gone warm, started leaving water on the floor or begun blinking a code at you? We repair systems throughout the borough no matter who installed them. The fault is diagnosed before a single part is ordered, you get the price, and we tell you plainly when a unit has reached the point where repair is throwing money away.
Report a fault
Three details and we call you back with the next step.
- Fixed whoever fitted it
- Leaks traced rather than topped up
- Repair and replacement priced side by side
Is there anything to try before calling us out?
- Check the remote is set to cool and that its batteries have life in them.
- Look at the consumer unit and the isolator next to the outdoor unit for a tripped breaker.
- Pull the filters out: if they are grey with dust, rinse them.
- Make sure nothing is leaning against the outdoor unit and no cover has been left over it.
If a breaker trips again after you reset it once, leave it off until we have been. Do not open the casing or touch the copper pipework.
What is the fault likely to be?
| Symptom | Usual explanation |
|---|---|
| Water running from the indoor unit | The condensate drain has blocked, or the coil is dirty |
| Fan running, air not cold | Filters choked with dust, refrigerant low, or the compressor wearing out |
| Ice on the pipes or coil | Not enough air passing the coil, or refrigerant escaping |
| A code on the display | Make-specific: take a photo of it |
| Rattling, buzzing or grinding | A panel working loose, something in the outdoor fan, or a motor on its way out |
Treat these as starting points. Gauges and a thermometer on the day settle it.
Why won't we just add more gas?
Because a system does not use refrigerant up. If the charge is low the gas has escaped, and after a top-up it will escape again, taking your money and a greenhouse gas with it. The proper repair is to trace the leak, fix it and recharge, and the law puts that work in the hands of a qualified F-gas engineer. Source: GOV.UK.
At what point is replacement the better call?
When an old unit's compressor has failed, when the same fault returns every summer, or when the refrigerant inside is one being phased out. Since 2025 new single splits holding less than 3kg of a refrigerant with a global warming potential above 750 can no longer be sold. An existing system can still be repaired, but gas and parts for the older ones are getting scarcer and dearer each year. We put the repair price and the replacement price side by side and let you choose. Source: GOV.UK.
What information speeds up the visit?
The make and model from the sticker on the indoor unit, any code on the display, when the trouble began and whether it appears in heating as well as cooling. A photo of the outdoor unit in its position often saves a journey. If you rent, tell the landlord, who may own the system and need to authorise the work. Our air conditioning in Dartford page explains how we work across the borough.
Questions people ask
Do you charge for coming out?
Whatever applies is explained on the phone before we book the visit, so there is nothing unexpected on the day.
It is a budget unit from an online retailer. Can it be repaired?
If parts are available, usually yes. Send the model number and we check before you pay for a visit.
Water is pouring onto the carpet. What do I do right now?
Turn it off at the remote and at the isolator, catch the water, move anything electrical out of the way and ring 01322 952910.
Sources we checked
Worth knowing before you ring
With these we can usually tell you on the first call whether the job is simple.
- The postcode
- Whether it is a house, a flat or business premises, and roughly its age
- If you rent or lease, who owns the external wall
- Which room, how big, and the direction its window faces
- Any management company, conservation area or listing that applies
Air conditioning repairs outside Dartford
Looking for air conditioning repair in one of the towns around us? Each page below sets out that place's own housing and planning position, and our air conditioning in Dartford page gives the full picture.
Worth reading first
How to check an air conditioning installer on the F-gas register
The company certificate, the engineer's category and where to look them up.
What does air conditioning cost to fit and to run?
Where the money goes: the unit, the labour, the wiring, the electricity, and the extras a flat or a new estate brings.
Portable or fixed air conditioning: which is right for you?
Price, power, noise and running cost, and when a portable is the right call.
Jobs that often go with this one
The rest of what we do
Air conditioning installation
The whole job from the first measurement to the handover of the remote, with every consent checked on the way.
Home air conditioning
The back bedroom, the new flat with the glass wall, the loft nobody can sleep in: cooled in summer, warmed in winter.
Air-to-air heat pumps
The same wall unit, run the other way: a room heated for pence an hour, with the summer cooling thrown in.
Multi-split air conditioning
Several rooms, one box in the garden. The design that fits inside a semi's single permitted outdoor unit.
Conservatory air conditioning
For the glass room that is a greenhouse in July and a fridge in January, and the garden office beside it.
Office air conditioning
Offices from a room above a shop to a floor on a business park, with the heat rules and the landlord dealt with.
Commercial air conditioning
Retail and hospitality premises, sized with the door open and the bedroom over the shop remembered.
Server room cooling
Dedicated cooling for the rack, calculated from the wattage on the plugs and running when the office is dark.
Want us to ring you?
A name, a number and a postcode is enough. Say which room if you can. Or ring 01322 952910.