It is not possible to install an outdoor unit, so the air conditioner is only central heating.
Piping replacement is in progress on the roof of the problematic apartment, but there are already a lot of corroded cold pipes piled up.It has been breaking down frequently for several years, but this year it stopped working completely.
As a result of the investigation by the resident representative chairman, it was said that the accident occurred due to the use of cheap white steel pipes. In the industry, white steel pipes are not used, but people are surprised that they are used.Not all expensive houses are good.