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Ducts

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Articles, Hints & Tips

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  • Testing Duct Testers

    According to DOE’s Building America program data, typical, residential ductwork efficiency is about 67%. That means that if you install a 90% efficient furnace, your system efficiency would be just over 60%. Another way to look at this is that ducts lose 25–40% of the energy that moves through them. Just from a practical standpoint it makes sense to improve the delivery system. Shorter, straighter, better engineered and installed ductwork will improve delivery efficiency.
  • Those Wild Ducts in Your Walls

    Typical duct systems lose 25 to 40 percent of the heating or cooling energy put out by the central furnace, heat pump, or air conditioner.
  • Weatherization and Ventilation

    How to make homes tight and ventilate right.
  • Setting the Record Straight - Is Sporicidin Safe for Duct Cleaning?

    Responding to a question from our readers.
  • Duct Cleaning

    In a typical forced-air system with leaky ducts and an inefficient filter, the ducts are usually contaminated with a wide variety of particulates and microorganisms—all directly exposed to the air being breathed by the occupants.

Books & DVDs

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HC-Pedia Entries

  • Tube Fan

    A ventilating fan made to attach a duct at each end.
  • Transfer Duct

    A short duct connecting two rooms through which air can move when pressure imbalances occur between the rooms.
  • Static Pressure

    The amount of pressure exerted against the walls of a duct or airway, created by the friction and impact of air as it moves.
  • Single-Port Ventilator

    An exhaust device having only one suction connection for a duct from the living space. See also multi-port ventilator.
  • Multi-Port Ventilator

    An exhaust device having several suction connections for running ducts from different rooms.

Home & Cleaning Services

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