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  2. Need a new air conditioner? Here's how to find a quality HVAC ...

    www.aol.com/air-conditioner-heres-quality-hvac...

    Summer isn't officially here yet, but it feels like it. Good HVAC contractors are in high demand. Here's how to find one.

  3. Best HVAC Systems 2024: Energy Efficiency and Cost Savings - AOL

    www.aol.com/best-hvac-systems-2024-energy...

    Geothermal Heat Pumps: These systems utilize the constant temperature of the earth to boost efficiency and reduce the operational costs of heating and cooling systems. Geothermal solutions are ...

  4. Ground source heat pump - Wikipedia

    en.wikipedia.org/wiki/Ground_source_heat_pump

    Commercial systems maintenance costs in the US have historically been between $0.11 to $0.22 per m 2 per year in 1996 dollars, much less than the average $0.54 per m 2 per year for conventional HVAC systems. [6] Governments that promote renewable energy will likely offer incentives for the consumer (residential), or industrial markets.

  5. 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.

  6. Underfloor air distribution - Wikipedia

    en.wikipedia.org/wiki/Underfloor_air_distribution

    While overhead systems typically use ducts to distribute the air, UFAD systems use the underfloor plenum formed by installation of a raised floor. The plenum generally sits 0.3 and 0.46 metres (12 and 18 in ) above the structural concrete slab, although lower heights are possible.

  7. Seasonal energy efficiency ratio - Wikipedia

    en.wikipedia.org/wiki/Seasonal_energy_efficiency...

    In the United States, the efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER) which is defined by the Air Conditioning, Heating, and Refrigeration Institute, a trade association, in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [1]

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