Heating & Cooling

District heating systems provide economies of scale in large cities like Copenhagen.
Photo: Bill Ebbesen. License: CC BY 3.0

Energy-efficient HVAC design is a fundamental of green building, for good reason:

  • The scale of the issue: HVAC is responsible for more than a third of energy use in commercial buildings in the U.S.

  • The scale of returns: Smart designs can easily save upwards of 40% of that energy, often with strategies that offer instant or short “payback.”

  • The human impact: Discomfort from spaces that are too hot or too cold, and lack of adequate ventilation, are an epidemic. Good design that fixes these problems supports healthier, more productive occupants.

Don’t make the all-too-common mistake of thinking of HVAC design separately from building envelope design. Over-glazed buildings lead to oversized mechanical systems, increasing costs on both fronts. A tight, well-insulated envelope may cost a bit more but can pay for itself with less mechanical equipment.

Heating & Cooling

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Product Guidance

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  • Active Chilled Beams: Saving Energy and Space

    Product Review

    Active chilled beams use a combination of chilled water, finned heat-exchanger coils, and ventilation air to induce air flows that supply cooling and heating in commercial buildings.

  • The First Practical Heliostat

    Product Review

    Practical Solar has introduced a simple heliostat system to reflect sunlight into buildings for lighting and space heating; future applications will include water heating and electricity generation.

  • The First Practical Heliostat

    Product Review

    Practical Solar has introduced a simple heliostat system to reflect sunlight into buildings for lighting and space heating; future applications will include water heating and electricity generation.

  • Matrix Total Home System Offers All-in-One Efficiency

    Product Review

    The Matrix Total Home System from NTI is an energy-efficient mechanical system that includes forced-air and hydronic heating as well as energy recovery and ventilation in one space-efficient unit.

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