Diagnostics and refuelling of car air conditioners
- Diagnostics and refuelling with freon R134a, R1234yf without recording
- Large assortment of compressors and components in stock: original, restored original, analogues
- Repairs of compressors and air conditioning systems of any complexity
- Specialised equipment (test benches, gas analysers, flushing stations)
Professional inspection of air conditioning systems in electric cars to detect faults and ensure efficiency.
Comprehensive inspection of all components of the air conditioning system, including pressure, leaks, and cooling performance.
Air conditioning refill with proven R134a refrigerant for older vehicles.
Professional filling of the cooling system with modern, environmentally friendly R1234yf refrigerant.
Quick and effective replenishment of refrigerant in air conditioning systems.
Removal of the damaged compressor and installation of a new one to restore full air conditioning functionality.
Disinfection of the evaporator to remove bacteria and unpleasant odors from the interior of the vehicle.
Cleaning the air conditioning system of old oil, metal filings, and contaminants after a breakdown.
Sealing or replacing damaged hoses to restore proper air conditioning operation.
Where to find us
In modern vehicles, the air conditioning system is not just a comfort feature but also a safety element, particularly during summer or long journeys. Malfunctions in automotive air conditioning can lead to reduced driver attention, unpleasant odors, mold, and microorganisms in the cabin. If you need automotive air conditioning diagnostics in Warsaw or system recharging, STS service is exactly what you're looking for.
Types of Air Conditioning Systems Serviced at Our Service Center
At STS service center, we have the experience and equipment to service all types of automotive air conditioning systems – from standard to high-tech. Our specialists work with both classic and cutting-edge cooling ecosystems, including technologies that were available only in premium brands just a few years ago.
We service the following types of automotive air conditioning systems:
- Systems with R134a refrigerant – most common in the majority of vehicles manufactured before 2017
- Air conditioners with R1234yf refrigerant – modern ecological systems installed in new vehicles from 2017 according to European requirements
- Systems based on R744 (CO₂) – high-tech air conditioners operating under high pressure and requiring precise, certified equipment. This type of cooling is used in electric vehicles (e.g., Tesla Model Y) as well as in the latest generation Audi, Mercedes, BMW models. We have everything necessary for complete service cycle and air conditioning recharging in Warsaw with CO₂ refrigerant – with quality guarantee.
- Electric compressors in electric vehicles and hybrids – require special approach as they operate not from the engine but from high-voltage network
- Multi-zone climate systems with automatic regulation for comfortable air distribution in the cabin
- Air conditioners with automatic air purification, ionization, or ozonation systems – we additionally check the efficiency of internal filtration components
Service Duration
| Service | Approximate Duration |
|---|---|
| Air conditioning system diagnostics | 30 min – 1 hour |
| Air conditioning recharging | 40–60 min |
| Air conditioning repair (minor) | 1–2 hours |
| Compressor or hose replacement | 2–4 hours |
| Complete system overhaul | 1 working day |
Common Air Conditioning System Malfunctions
- Refrigerant leaks due to hose, seal, or heat exchanger non-tightness
- Compressor malfunction (jamming, wear, noise)
- Clogging or wear of the dryer filter
- Electronics, sensor, or relay malfunctions
- Efficiency loss due to old oil or its shortage
- Spread of odors, fungi, mold – need for ozonation and cabin filter replacement
Air Conditioning Recharging Warsaw
We offer comprehensive automotive air conditioning recharging, including pressure level checking, vacuuming, leak testing, topping up, or complete air conditioning filling in Warsaw.
Services include:
- Cabin filter removal and replacement
- Complete evacuation of old refrigerant
- System vacuuming to remove moisture and air
- Pressure leak testing
- Adding oil and UV control for potential leak detection
- Recharging with appropriate refrigerant type according to manufacturer requirements
- Checking compressor operation, pressures, and temperatures
Types of Refrigerants in Automotive Air Conditioning Systems
At STS we work with all current types of refrigerants, including modern ecological solutions:
- R134a – classic, proven refrigerant still widely used in many car models
- R1234yf – new generation refrigerant recommended by the EU as safer for the environment. Provides efficient cooling with less climate impact
- R744 (CO₂) – innovative refrigerant used in modern premium-class vehicles and electric cars. It is absolutely safe for the environment, has the lowest GWP rating (0), operates under higher pressure, therefore requires special equipment and training. STS is one of the few service centers in Warsaw that performs R744 (CO₂) air conditioning recharging according to all technical requirements and safety standards.
Importance of Oil in Air Conditioning Systems
Besides refrigerant, the air conditioning system requires special oil that circulates together with the refrigerant and ensures lubrication of moving elements, primarily the compressor. Without sufficient oil quantity or due to deterioration of its characteristics, the compressor quickly wears out, overheats, or jams, leading to expensive repair or complete replacement.
When to check or renew oil:
- During automotive air conditioning recharging – we always monitor and, if necessary, add oil of the appropriate type
- After air conditioning system repair, especially after compressor or line replacement
- In case of refrigerant leak – part of the oil also escapes with it
- During regular inspection, if the car is operated under difficult conditions (heat, constant short trips)
We use specialized synthetic oils compatible with different refrigerant types (R134a, R1234yf, R744) – taking into account viscosity, composition, and manufacturer specifications. In our automotive workshop, oil is always checked as a mandatory stage of air conditioning service.
When is refrigerant recharging needed?
- Noticeable decrease in cooling efficiency
- Air conditioning is on, but warm air blows from ventilation nozzles
- After repair or intervention in the air conditioning system
- Visible leak traces (oil, stains)
- After 1–2 years of regular operation (even without obvious problems)
What is the cost of air conditioning repair?
The price of air conditioning service in Warsaw depends on several factors:
- System type (R134a, R1234yf, R744)
- Need for topping up or complete refrigerant replacement
- Compressor and other component condition
- Presence of leaks or non-tightness
- Need for filter, hose, or air conditioning radiator replacement
On average:
- Diagnostics: from 100 PLN
- Recharging: from 200–350 PLN (depending on refrigerant type)
- Compressor repair: from 500 PLN
- Compressor replacement: from 1200 PLN
We always agree on the cost with the client beforehand.
Step-by-Step Recharging Process
Air conditioning service at STS company consists of the following stages:
- Conducting preliminary diagnostics and error reading
- Evacuation of old refrigerant, moisture, and oil residues
- Air conditioning system vacuuming
- Leak testing
- Adding appropriate oil and UV control
- Recharging with new refrigerant in required volume
- Control checking of pressures, temperature, compressor operation
- Cabin ozonation if needed
- Recommendation regarding cabin filter replacement or scheduled maintenance
Why Choose Us
STS is an automotive workshop where air conditioning service is performed accurately, quickly, and with consideration of all technical nuances. Even servicing R1234yf air conditioning or the latest CO₂ R744 is not a problem for our team.
We perform air conditioning recharging, complete diagnostics, leak detection, air conditioning repair in Warsaw, climate system maintenance with R134a, R1234yf refrigerants and the latest R744 (CO₂). We also provide ozonation services, cabin filter replacement, leak control, and comprehensive cabin cooling system maintenance.
For all procedures, we use high-precision equipment – vacuum stations, gas analyzers, flushing stations, and other equipment, including our own brand production, which we developed for working with modern refrigerants and oils.
Spare Parts and Compressors in Stock
At STS we have a large selection of compressors and components:
- New original compressors
- Reliable alternatives
- Reconditioned units using original parts
If the compressor needs replacement, our clients don't necessarily need to buy a new one. You can trade in your faulty unit to us – and immediately receive a ready-to-install unit from our large exchange fund that is almost as good as new in terms of service life and efficiency. All options are checked for tightness and performance on our proprietary equipment.
Need automotive air conditioning diagnostics, air conditioning recharging in Warsaw, or r1234yf air conditioning service? Visit STS – you can come to us even without prior appointment. We work quickly, with quality, and with guarantee!
Problem: The owner of a second-generation Nissan Leaf contacted STS.Electro with a complaint: the car only charges from a fast charging station, but does not accept a slow charging gun (Type 1).
Problem: We were contacted by the owner of a Peugeot e-208 electric car. After charging to almost 100%, the electric car stopped accepting a charge, and the system displayed a second-level overvoltage error.
Problem: The owner of a Karma Revero hybrid was unable to drive his car for over eight months: the engine would only start for a few minutes at a time, and the battery would not charge.
Problem: The Dacia Spring car would not start or charge due to a reversed battery polarity and a faulty DC/DC+charger unit.
Problem: A well-known logistics service provider brought in three electric vans for repair after their high-voltage batteries failed. In one of them, the battery was dismantled.
Problem: The high-voltage battery is discharged and cannot be charged. The car does not accept a charge because the electronics do not recognize the connection of the charging gun.
Problem: A sharp drop in driving range and the vehicle switching to emergency mode with reduced power (“turtle mode”).
Problem: The problem with the car was the incompatibility of the Chinese GB/T standard charging system with European charging stations. This created difficulties for the owner of the Audi Q4 e-tron, since the car, produced for the Chinese market, could not charge at European stations with the required speed and reliability.
Problem: Failure of Toyota hybrid batteries is a common problem that our customers come to us with. The battery cells degrade, making it impossible for the car to operate normally.
Problem: We received an electric car with very discharged traction batteries. The problem is typical for the Fiat 500. During idle time, the batteries discharged below the permissible level, and the car's electric motor stopped starting.
Problem: The Hyundai Kona made a rather loud noise. The customer diagnosed the malfunction on his own - in his opinion, the gearbox was the cause of the extraneous sounds.
Problem: In a diesel-electric Peugeot 508 HYbrid4 Berline 2.0 HDi 163 FAP (DW10CTED4), the owner encountered a complete shutdown of the hybrid system – the engine would not start, and numerous fault warnings appeared on the instrument panel.
Problem: The hybrid Audi Q7 lost almost half of its electric range — instead of 40 kilometres on a single charge, it only managed 18.
Problem: In the case of a critical discharge of a low-voltage battery (12–48 V), the electronics prevent charging because it is dangerous with Li-Ion batteries. The manufacturer recommends discarding fully functional batteries and replacing them with new ones. This is expensive.
Problem: Failure of Toyota hybrid batteries is a common problem that our customers come to us with. The battery cells degrade, making it impossible for the car to operate normally.
Problem: Land Rover Range Rover Sport 3.0 SDV6 Hybrid AT AWD - the hybrid system did not work, the VBB was in emergency mode. The car was running only on diesel fuel, the low-voltage battery was not charging.
Problem: None of the car's systems were working at all, it wasn't even possible to raise it on a lift because the air suspension didn't activate either. I had to install the Porsche near the repair box on "goat" stands.
Problem: The owner of a Hyundai i30 encountered a knocking noise in the steering caused by wear on the power steering drive pinion inside the steering column.
Problem: In Opel Astra H vehicles, the electric power steering pump often fails. The cause can be either corrosion or damage to the unit due to careless driving.
Problem: IThe specific placement of the steering rack in many Audi models allows moisture to penetrate the control unit of the electric power steering, causing corrosion of components and failure of the unit.
Problem: Steering rack leakage from under the tie rod dust cover
Problem: Steering rack leakage from under the tie rod dust cover
