The comparison between warm-air heating system and hot water heating system is made. The applicability and practicability of the warm-air heating system are analyzed.

对热风供暖系统与热水供暖系统进行了比较，分析了热风供暖系统的适应性和实用性。

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In all ships in which a heating system is required, the heating should be by means of hot water, warm air, electricity, steam or equivalent.

在所有要求配备供暖系统的船上，可用热水、热气、电力、蒸汽或等效方式供暖。

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By sucking 55-degree heat out of the ground and concentrating it, the heat pump is able to deliver 110-degree heat into the warm air ducts of a central heating system.

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Typically, the colder it is outside the faster the warm air from inside escapes, which can leave your heating system on all through the day without any noticeable difference to the temperature.

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