Editorial explanations about air conditioner cleaning, maintenance and common symptoms. Browse by topic or search for a specific situation.
Explanations and useful checks for this situation: Musty smell for a few minutes after switching the AC on, then it goes away – is that normal?
Explanations and useful checks for this situation: 'Wet socks' smell from a Daikin, 8 years old, Drumul Taberei
Explanations and useful checks for this situation: Sewer / rotten-egg smell coming out of the air conditioner
Explanations and useful checks for this situation: Black spots on the unit's louvres – is it mould? How bad is it inside?
Explanations and useful checks for this situation: Is mould in the AC really dangerous or is it cleaning-company marketing?
Explanations and useful checks for this situation: Mould on the wall under the indoor unit – from the unit or from the building?
Explanations and useful checks for this situation: Can a home air conditioner cause Legionella? A company told me it can
Explanations and useful checks for this situation: Which is the dirtiest part of the unit? The filters look clean
Explanations and useful checks for this situation: Grandma has COPD and lives in the room with the AC – what must I do with the unit?
Explanations and useful checks for this situation: My child sneezes and has a blocked nose only in the morning, in the room with the AC
Explanations and useful checks for this situation: My daughter tested allergic to Alternaria and Cladosporium – what does that have to do with the unit?
Explanations and useful checks for this situation: Baby with atopic dermatitis – does the air conditioner help or make it worse?
Explanations and useful checks for this situation: Asthma for 20 years, night attacks only in summer – is the bedroom unit a suspect?
Explanations and useful checks for this situation: With asthma, does the cold from the unit matter more, or the mould in it?
Explanations and useful checks for this situation: Ex-smoker with chronic bronchitis – I cough harder in the room with the AC
Explanations and useful checks for this situation: Water dripping from the indoor unit onto the floor – blocked or broken?
Explanations and useful checks for this situation: No condensate runs out on the balcony anymore – it used to run all the time
Explanations and useful checks for this situation: The unit spits water droplets from the grille onto the sofa
Explanations and useful checks for this situation: The unit blows dust – the furniture gets a grey layer in two days
Explanations and useful checks for this situation: Rhythmic 'whoosh-whoosh' noise and vibration at the indoor unit – from dirt?
Explanations and useful checks for this situation: Cracking noises from the housing and a faint 'rasp' – is the unit dirty or is the plastic expanding?
Explanations and useful checks for this situation: Store-bought AC cleaning spray – worth it, and how is it used correctly?
Explanations and useful checks for this situation: I want to wash the unit myself with a garden sprayer – what is the risk?
Explanations and useful checks for this situation: What is the correct home maintenance routine between two sanitisings? I want a list
Explanations and useful checks for this situation: What does an AC 'revizie' (annual service) actually include? I don't want to pay for nothing
Explanations and useful checks for this situation: Why does everyone want to 'top up my freon' at the service? Does it actually get used up?
Explanations and useful checks for this situation: Brand-new unit under warranty – do I need a service so I don't lose the warranty?
Explanations and useful checks for this situation: I wash the filters monthly – does that mean the unit is clean?
Explanations and useful checks for this situation: 'Full dismantling' clean or in-place? One company says only dismantled is a proper clean
Explanations and useful checks for this situation: 15-year-old unit, never cleaned inside – worth cleaning or should I replace it?
Explanations and useful checks for this situation: What solution do you use for sanitising? I have two small children and worry about chemicals
Explanations and useful checks for this situation: Is that normal? See current rates on the Prices page.
Explanations and useful checks for this situation: Dental clinic in Pipera – what does AC sanitising involve for a medical space?
Explanations and useful checks for this situation: How can I check myself whether the unit cools as it should? Is there a simple test?
Explanations and useful checks for this situation: How do I check the condensate drain isn't blocked before it drips on my floor?
Explanations and useful checks for this situation: Pre-season check: the unit makes a new noise, is it from dirt?
Explanations and useful checks for this situation: How often should sanitising be done? Does it depend on how much I use it?
Explanations and useful checks for this situation: Allergic child, unit in his bedroom – does it really need twice a year?
Explanations and useful checks for this situation: Small office with 4 staff in Pipera – how often do we sanitise the two units?
Explanations and useful checks for this situation: What is the 'cover method' for AC cleaning? Explain it to me step by step
Explanations and useful checks for this situation: Pressurised water in an electrical appliance on the wall – is it really safe?
Explanations and useful checks for this situation: What actually comes out into the bucket? My neighbour showed me a photo of black water and I can't believe it
Explanations and useful checks for this situation: The outdoor unit is full of poplar fluff – can I hose it down myself?
Explanations and useful checks for this situation: The outdoor unit is on the facade, 6th floor – how do you clean it? Is it worth including?
Explanations and useful checks for this situation: The outdoor unit is in the yard at grass level, next to the dog's spot – what problems come up?
Explanations and useful checks for this situation: My electricity bill rose 30% this summer – could it be the dirty unit?
Explanations and useful checks for this situation: How much do I actually save after cleaning? I want numbers, not 'a lot'
Explanations and useful checks for this situation: The unit runs non-stop and never reaches 24 °C – it uses a fortune. Dirty or undersized?
Explanations and useful checks for this situation: Open-space office in Pipera, 40 units — what does a sanitising contract look like?
Explanations and useful checks for this situation: Dental clinic — is the protocol different because of aerosols?
Explanations and useful checks for this situation: Restaurant — the dining room near the kitchen, units picking up grease from the air
Explanations and useful checks for this situation: Ceiling cassette — why does it take longer but cost the same as a wall unit?
Explanations and useful checks for this situation: Ducted unit hidden in the false ceiling — can it be sanitised without breaking into the ceiling?
Explanations and useful checks for this situation: Multi-split with one outdoor unit and 4 indoor units — do we sanitise them all at once or one by one?
Explanations and useful checks for this situation: When is the best time to book sanitising – spring, summer or autumn?
Explanations and useful checks for this situation: I use the unit for heating in winter too – does autumn cleaning still matter?
Explanations and useful checks for this situation: First start-up of the summer – what do I do before pressing the button?
Explanations and useful checks for this situation: See current rates on the Prices page.
Explanations and useful checks for this situation: What do I lose by going cheap? See current rates on the Prices page.
Explanations and useful checks for this situation: No cover, just a spray, 12 minutes, then 'let's top up the freon' — how many red flags is that?
Describe it, with photos if you have them. A technician usually replies the same day and, with your consent, we publish the anonymised question.
the rate on the Prices page / unit 9,000–12,000 BTU, indoor + outdoor. We call you to confirm.