Air Conditioner Installation and Service in Warsaw
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Warsaw summers are getting hotter every year — flats in Mokotow and Wola reach 30 degrees and more already in June. A portable air conditioner fixes that without drilling the facade or asking building management for permission. But taking it out of the box and turning it on is only half the job: the exhaust hose has to go through a window, the opening needs proper sealing, and the condensate drain has to be sorted out. We install portable AC units and service ones already in use — filter cleaning, drain checks, and pre-season diagnostics.
How much does AC installation and service cost
The cost depends on what needs to be done. Portable AC installation includes fitting a window sealing kit for the exhaust hose, connecting the drainage, and testing the unit. AC service includes cleaning the filters, flushing the drain channel, checking the refrigerant, and carrying out a general diagnostic. Basic fixings and sealing materials are included in the installation price, while replacement filters and any extra materials are billed separately. You can find current prices in the table below.
| Service | min | max |
|---|---|---|
| Portable air conditioner installation | 250 zł | 500 zł |
| Air conditioner service | 300 zł | 600 zł |
How portable AC installation works
- You send a photo of the room and window — the technician checks whether the window will work for the exhaust hose and gives you a price.
- We arrange a visit time — often the same day or the next day.
- On site, the technician checks the window type (tilt-and-turn, sliding), where the socket is, and how far it is from the window.
- We fit the window sealing kit — a fabric or plastic insert that closes the gap around the exhaust hose and stops hot air from coming back inside.
- We connect the corrugated exhaust hose to the unit and pass it through the seal to the outside. We make sure the hose is not bent and that the length is right.
- We sort out condensate handling — connect a drain hose or check the built-in self-evaporation system. If the model does not have auto-evaporation, we place a collection container or run a hose.
- We switch the unit on, test all modes (cooling, ventilation, dehumidification), and measure the outlet temperature.
Common mistakes when installing a portable AC
- Leaving the window open without a seal — hot air from outside gets into the room and the AC works with no real result.
- Using an exhaust hose that is too long — cooling performance drops 20-30% with every extra metre.
- Placing the unit right against a wall — this blocks the air intake, leads to overheating, and causes shutdowns.
- Skipping filter cleaning — dust clogs the grille, power use goes up, and cooling gets weaker.
- Plugging the AC into a power strip shared with other appliances — portable units draw up to 1.5 kW, and an overloaded strip is a fire hazard.
- Ignoring condensate — the tank fills up, overflows, and soaks the floor, especially at night.
- Pointing the exhaust hose upward — condensate flows back into the unit.
What to prepare before the technician arrives
- Unpack the unit and check what is inside — exhaust hose, window adapter, drain hose.
- Decide which room the unit will be placed in — the technician needs the room size.
- Check the window: tilt-and-turn is the easiest option; sliding windows need a different panel.
- Make sure there is a socket rated at least 16A within 1.5 metres of the window.
- If the socket is far away — tell the technician in advance so they can bring a heavy-duty extension lead with the right gauge.
- Clear the space around the window — the technician needs access to the sill and the sash.
- If there are curtains or blinds on the window — decide beforehand whether they need to come down or whether the job can be done around them.
- Provide the intercom code and parking details.
- If there is a carpet in the room — cover it with plastic sheeting in case condensate drips during setup.
- Keep the AC manual ready — it shows the wattage and ventilation requirements.
A real case from Warsaw
A client in the Srodmiescie district bought a 3.5 kW portable AC for a 25 m² living room. The flat was on the fifth floor with south-facing windows — by summer afternoon the room was impossible to sit in. The issue was that the tilt-and-turn windows had a narrow opening, and the universal fabric seal from the kit did not fit. The technician cut the seal to match the sash size, fixed it with hook-and-loop tape, and routed the exhaust hose through the top part of the window. The socket turned out to be on the opposite wall, so the technician installed a cable channel and added a dedicated socket closer to the unit. The model had no auto-evaporation for condensate, so we connected a drain hose running into a 5-litre plastic container. After startup the room temperature dropped from 32 to 24 degrees in 40 minutes. The client also booked a service visit a month later — the filter was already dusty, and after cleaning the cooling performance improved clearly.
Frequently asked questions
Is a portable AC noisy?
Yes, portable units are louder than split systems — 50-65 dB in most cases. But good installation cuts vibration: level placement on a flat surface and non-slip pads under the feet.
Can I skip routing the exhaust hose through a window?
No. If hot air is not vented outside, the unit cools and warms the room at the same time — the end result is zero. The exhaust hose has to be installed.
How often does an AC need servicing?
Clean the filters every 2-3 weeks when the unit is used heavily. A full service (drain, diagnostics, refrigerant check) should be done once a season, best before summer begins.
What is included in the installation price?
Labour, installation of the window seal, connection of the exhaust hose and drain, and an operational check. Extra materials (extension lead, non-standard seal, condensate container) are charged separately.
Does the AC need a dedicated electrical circuit?
For more powerful models (3 kW and above) yes, that is recommended. Portable ACs pull a lot of power, and running one through a weak extension strip shared with other devices can overheat the wiring.
Do you install split AC systems?
No, we handle portable (floor-standing) air conditioners. A split system means drilling through the facade and mounting an outdoor unit — that is a different kind of job and often needs building management approval.
Can I use the AC in winter for heating?
Some portable models come with a heating mode. But it is not efficient — power consumption is high and the heating output is usually too weak for winter. An air conditioner is mainly for cooling.
What do I do with the condensate?
That depends on the model. If it has auto-evaporation, the water goes out with the hot exhaust air. If not, the technician will connect a drain hose to a container or set up a run-off. We sort out the right option on site.
Who does the work
AC installation and servicing are done by technicians who know flats with all kinds of layouts — from older buildings in Srodmiescie to new developments in Wilanow. We come with tools, sealing kits, and consumables. If the job needs a non-standard setup, we discuss it in advance from the photos. To book, call or message us — we get back within an hour.