Air conditioner sanitising Titan

What we meet in Titan
4- and 10-storey 1970s blocks, 9,000 BTU units in small bedrooms where children sleep a metre from the louver.
The procedure is the same everywhere: foil on the floor, sealed cover, cleaning solution, pressure wash until the water runs clear, sanitising solution, outdoor unit washed on the balcony, photo report. Only what we find in the unit differs, and here we know what to expect.
Frequent questions from customers
Filters turn black in 3 days in a clean bedroom – what is going on?
Explanations and useful checks for this situation: Filters turn black in 3 days in a clean bedroom – what is going on?
We were away for 3 weeks and on our return the AC smells terrible
Explanations and useful checks for this situation: We were away for 3 weeks and on our return the AC smells terrible
I have a brand-new A+++ inverter – does it still lose efficiency when dirty, or is it 'smart'?
Explanations and useful checks for this situation: I have a brand-new A+++ inverter – does it still lose efficiency when dirty, or is it 'smart'?
Dental clinic in Pipera – what does AC sanitising involve for a medical space?
Explanations and useful checks for this situation: Dental clinic in Pipera – what does AC sanitising involve for a medical space?