We wanted to reduce the cost of heating and air-conditioning.

我们想减少供暖与空调的开支。

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It also supplies electrical, heating and air-conditioning systems, as well as building and facility management services.

它同时还提供电力、供暖和空调系统，以及楼宇和设施管理服务。

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Thanks to wireless communications, lighting, heating and air-conditioning can be controlled centrally to keep energy bills down.

由于无线通信的应用，照明、暖气、空调能够在中心进行控制，能耗的费用就会降低。

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He had also applied to a six-month training program for heating and air-conditioning technicians.

NEWYORKER: Hellhole

There are big bucks to be made in surgical and medical fabrics-gross profits for surgical packs, gowns, caps, masks, sponges, bandages and tape run 25% to 30%-and in allergen- and pollution-trapping filters for heating and air-conditioning (50% to 60%), both made by 3M.

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People would be paying less on their electricity bills and their heating bills and their air-conditioning bills.

WHITEHOUSE: President Obama Talks with Virginia Families on the Economy | The White House