The building's historic significance means it is listed with a Grade-II conservation rating, so any alterations had to be sympathetic and in keeping with its context and heritage.

For the reasons of nature conservation great attention is paid at the systems that use low-grade heat sources in their work (that is heat energy of soils, air, discharge and drain).

In Europe and the United States it has been widely used in various grade roads but in China it is still the new conservation technology.