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  • Air Cleaner

    There are several different types, but these useful appliances are no substitute for good cleaning and other preventive measures.
  • Batt

    A widely used form of insulation.
  • Concrete-Slab Foundations

    Easily constructed in a healthy manner, it can be part of a house foundation or built separately from the footings and foundation wall.
  • Condensation

    The changing of a gas or vapor into a liquid, accompanied by the release of heat.
  • Crawl Space Foundations

    Unlike basement foundations, a crawl space is not considered part of a home’s living space. Crawl spaces are usually accessed only to repair pipes, ducts or mechanical equipment.
  • Dehumidifying Heat Pipe

    In humid climates, even air conditioned air may feel clammy without the assistance of a little technology.
  • Diffusion

    The migration of molecules of a gas or a vapor (or a liquid) from an area of high concentration to an area of low concentration.
  • Diffusion Retarder

    A material that slows down the amount of diffusion through a solid material, often used in insulated walls.
  • Energy-Recovery Ventilator (ERV)

    A balanced ventilation device that transfers both heat and humidity between the exhaust and supply air streams.
  • ERV

    Energy recovery ventilators (ERVs) are heat recovery ventilators (HRVs) that exchange moisture between the two air streams.
  • Evaporation

    The changing of a liquid to a gas or vapor, requiring heat.
  • Humidifier, Whole House

    Basic tips on controlling humidity output. Don’t have a humidifier? You might not need it after all.
  • Humidity

    Humidity is moisture in the air in the form of invisible water vapor. See absolute humidity and relative humidity.
  • Insulation

    A material that inhibits the flow of heat.
  • Latent Heat

    The amount of heat that must be removed from air to change the water vapor from a gas to a liquid without changing its temperature.
  • N95 respirator

    An essential tool used to protect people from hazardous fumes during certain jobs.
  • Pier Foundations

    Often used in hot, humid climates, a pier foundation lifts a house up off the ground reducing health hazards from direct soil contact.
  • Plywood

    Material made of several layers of wood glued together, which is widely used in home construction.
  • Poly Moisture Barrier

    Sheets of heavy plastic that help keep moisture out.
  • Polyurethane and polyisocyanurate

    Polyurethane can be a flexible foam, as used in upholstery, or a rigid foam, as in insulation.

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