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  2. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    The three major functions of heating, ventilation, and air conditioning are interrelated, especially with the need to provide thermal comfort and acceptable indoor air quality within reasonable installation, operation, and maintenance costs. HVAC systems can be used in both domestic and commercial environments.

  3. Cost breakdown analysis - Wikipedia

    en.wikipedia.org/wiki/Cost_breakdown_analysis

    The cost breakdown analysis is a popular cost reduction strategy and a viable opportunity for businesses. [1] [2] [3] The price of a product or service is defined as cost plus profit, whereas cost can be broken down further into direct cost and indirect cost. [1] As a business has virtually no influence on indirect cost, a cost reduction ...

  4. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    An air conditioner designed for an occupied space will typically achieve a 30% to 60% relative humidity in the occupied space. [51] Most modern air-conditioning systems feature a dehumidification cycle during which the compressor runs. At the same time, the fan is slowed to reduce the evaporator temperature and condense more water.

  5. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    The energy cost of heating is one of the main costs of operating a building in a cold climate. Some central heating plants can switch fuels for reasons of economy and convenience; for example, a home owner may install a wood-fired furnace with electrical backup for occasional unattended operation.

  6. Maintenance - Wikipedia

    en.wikipedia.org/wiki/Maintenance

    Corrective maintenance is a type of maintenance used for equipment after equipment break down or malfunction is often most expensive – not only can worn equipment damage other parts and cause multiple damage, but consequential repair and replacement costs and loss of revenues due to down time during overhaul can be significant.

  7. 7 Common Car Maintenance Costs To Get Ahead Of Before ... - AOL

    www.aol.com/7-common-car-maintenance-costs...

    Brake service can range from $150 to $400, depending on whether you need new pads, rotors or calipers.” ... 7 Common Car Maintenance Costs To Get Ahead Of Before Winter Officially Hits. Show ...

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