Install, troubleshoot and overhaul entire heating, ventilation, air handling, refrigeration and air conditioning systems.

安装工，故障排除和检修整个采暖，通风，空气处理，制冷和空调系统。

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Having several units could reduce the energy used by air-conditioning systems by only cooling those rooms currently in use, says Poese.

集成数个这种设备单元，就可以减少现存单冷空调系统的能量消耗，珀斯说。

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He will examine the roof, attic, insulation, the home's heating and air-conditioning systems, the plumbing and electrical systems, walls, ceilings, floors, Windows, the basement and the foundation.

他会检查屋顶，阁楼，暖气，空调系统，水管，电路系统，墙壁，天花板，地板窗户，地下室，地基。

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The latter would enable long-haul truckers to plug in to power their air conditioning systems, TVs, etc.

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It can end up in artificial water supply systems, including air conditioning systems, water services and cooling towers.

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But he said there was no evidence air conditioning systems in buildings, or the recirculated air on planes, was involved in the spread of the disease.

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