The TWGHs Man Mo Temple at Hollywood Road and Shui Yuet Kung at Shan Tung Street have both installed Qing Yan Furnace which was designed by the Hong Kong Productivity Council. As both temples are popular and are located near residential buildings at the hub of the city, the installation of Qing Yan Furnace has greatly reduced the impact of burning joss papers on air quality.

The environmental-friendly furnace has been found satisfactory in various environmental tests by reducing smoke in compliance with the environmental requirements.

Moreover, additional eco-furnaces will be designed and installed at Kwong Fook Tsz in Sheung Wan, Tin Hau Temple Compound in Yaumatei and the 2 Hung Shing Temples in Wan Chai and Tai Kok Tsui. Besides, eco-incense has been made available for sale at 4 additional temples including Shui Yuet Kung, Tin Hau Temple Compound and the 2 Hung Shing Temples .