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Passive Solar? Poly Moisture Barrier?

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HardboardManufactured wood product used in home construction for interior wall paneling, underlayment for carpeting and exterior siding.
Hazardous WasteThese products can threaten your family’s health and the environment.
HE Washing MachinesHE washers save significant energy over traditional washing machines by decreasing the amount of water needed per load and shortening drying times.
HeadspaceThe breathing zone in a room, in residences it usually extends from a few inches off the floor to about 6 feet off the floor.
Healthy Home ChecklistDone regularly, these tasks will help ensure clean air and greater safety inside your well-functioning home.
Heat PipeA sealed tube partially filled with a refrigerant, used in some HRVs to transfer heat between two airstreams.
Heat Pump Water HeatersA heat pump also can be used to heat water - either as a stand-alone water heating system, or as a combination water heating and space conditioning system.
Heat PumpsFor climates with moderate heating and cooling needs, heat pumps offer an energy-efficient alternative to furnaces and air conditioners.
Heat-Recovery Ventilator (HRV)A balanced ventilation device capable of transferring heat between the exhaust and supply airstreams.
HEPA FilterStands for High Efficiency Particulate Air filter, often used in hospitals and laboratories.
HERSA home energy rating involves an analysis of a home’s construction plans, and onsite inspections.
Home Ventilating Institute (HVI)An organization that certifies the airflow, sound, and energy performance of residential ventilation equipment.
HRVBrings fresh air in and takes stale air out, while conserving heat or cooling energy.
Humidifier, Whole HouseBasic tips on controlling humidity output. Don’t have a humidifier? You might not need it after all.
HumidistatA control device that can be used to activate a ventilation system as the relative humidity falls. See dehumidistat.
HumidityHumidity is moisture in the air in the form of invisible water vapor. See absolute humidity and relative humidity.
HVACHeating, ventilating and air conditioning explained.
Hydronic HeaterAn electric appliance using hot liquid inside copper tubing to deliver heat.
HygrometerA device that senses relative humidity.
HypoallergenicThis type of labeling is not quite a promise that an item will not trigger an allergic reaction.

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