We have central air conditioning and central heating.

我们有中央空调和中央供暖设备。

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Indoor ornament, air conditioning and central heating system and a wide application of chemical articles in everyday have resulted in serious indoor air contamination.

由于室内装修、暖通空调及大量家用化工产品的使用，室内空气污染日趋严重。

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Not only new walls and new floors but a large radiant heating system was installed as well as new wiring, plumbing, drainage, insulation, and central air conditioning.

不仅是新的墙壁和安装新的地板，但一个大辐射采暖系统以及新的线路，管道，排水，保温，中央空调。

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Plants release moisture into the air alleviating the dry atmosphere generated by air-conditioning and central heating units, as well as computers.

CNN: Office foliage for feel good factor

Video recorders, central heating and air conditioning controls could be affected.

BBC: Millennium bug to hit more than computers

Heating and cooling experts say central air-conditioning systems should be serviced annually to remove dirt, change filters and check the level of Freon, a refrigerant.

WSJ: Don't Wait to Service AC Units