Air Pollution:unpleasant and/or harmful substances released into the air during the process of cooking. Contains steam, smoke, odors, carbon monoxide, and/or grease. Range hoods remove airborne pollution by a combination of filtering and extracting the contaminated air. Ducted range hoods remove all forms of air pollution, by filtering airborne grease, then evacuating air to the outside of the residence. Ductless hoods use carbon filters (in addition to grease filters) to remove odors and recirculate the cleaned air into the room. However, ductless range hoods cannot remove excess heat and moisture. Although all ProLine range hoods can be used in either ducted or ductless mode, it is recommended to use a duct whenever possible, in order to remove all forms of air pollution.
Backdraft Damper:A valve (spring-loaded or gravity-operated) installed inside a duct. During range hood operation, the air pressure causes the valve to open, allowing polluted air to be exhausted outside. When the range hood is shut off, the backdraft damper closes, preventing outside air from entering the ductwork. Related: see the FAQ for advice on damper installation.
Blower:The heart of the range hood, the blower is the device that moves air. Sometimes, the terms "fan" and "blower" are used interchangeably; however, fans are designed to operate at lower speeds, whereas blowers are engineered to move air at higher speed and pressure. Depending on the location of the blower, it may be referred to as:
"Internal" - inside the actual range hood unit,
"Inline" or "Remote" - outside the range hood (ex: in attic / between joists),
"External" - outside the house, in a weather-resistant enclosure.
All ProLine range hoods feature built-in blowers (you do not need to purchase a blower or "power pack" separately), which are covered by the manufacturer's Lifetime Warranty.
BTU:Acronym of "British Thermal Unit", used to measure the heat output of gas-fueled appliances.
Carbon Filter:Cartridge or cassette filled with activated charcoal, used to filter contaminants from the air. Required in ductless range hoods, as it will remove other contaminants after airborne grease has been absorbed by grease filters. Carbon filters cannot be washed or cleaned and should be replaced every few months (depending on the amount of cooking). Note: all ProLine range hoods are shipped with the appropriate Aluminum or Stainless Steel Baffle Filters Included. Carbon Filters are optional and can be purchased separately. However, if your range hood will be connected to an outside duct - you do not use any carbon filters. Since the air will be extracted to the outside, the carbon filter is not necessary. Also called: charcoal filter, activated charcoal filter, "black filter", and other variations.
CFM:Acronym of "Cubic Feet Per Minute", used to measure the airflow capacity of ventilation appliances.
Ducted:Refers to a range hood installed with a duct ("air pipe") leading outside the house. Ducted range hoods remove all forms of airborne pollution, and do not require the use of carbon filters. This leads to higher performance compared to ductless installation and does not cause additional noise or expense. Also called: "Vented", "Outside Discharge".
Ductless:Refers to a range hood installed without an outside duct. Ductless range hoods use a combination of grease filters and carbon filters to remove most forms of airborne contaminants. Also called: "Recirculating", "Ventless".
External Blower:A blower motor unit installed not only outside of the range hood but outside of the house (in an outdoor-rated enclosure). Placing the blower outside of the house reduces operational noise, but requires additional expense and labor. Related: Inline Blower, Remote Blower.
Fan:Technically, any device that moves air or other gas. Often, the terms "fan" and "blower" are used interchangeably. However, there is a difference - a "blower" is a specific type of fan, engineered to perform at high speeds (whereas fans are typically effective at lower speeds). Related: Blower.
Grease:One of the forms of airborne pollution caused by cooking. Can combine with other substances to create a sticky film on kitchen surfaces, and may damage kitchen cabinetry by attracting mold and fungi growth. Range hoods use grease filters to remove airborne grease.
Grease Filter:Cartridge or cassette filled with layers of metal mesh, which traps airborne grease. Grease filters are made from metallic materials (typically, anodized aluminum), and do not need to be replaced. All ProLine range hoods include metal mesh grease filters or our Professional Series includes Stainless Steel Baffle filters and Stainless Grease Cups, which are easily removable and dishwasher-safe.
"Height-adjustable" (feature):Refers to an island-mount or wall-mount range hood with a vertical chimney whose height can be adjusted to fit various ceiling heights. Does not apply to under cabinet and insert/liner hoods, as they do not have a chimney by design. Also referred to as "Telescoping Chimney" or "Adjustable Chimney Section"
Inline Blower:A blower motor unit installed outside the range hood, but still within the house (for example, in the attic or between joists). Like an external blower, this setup reduces operational noise. Unlike the external blower, it does not require an additional outdoor-rated enclosure.
Insert:A range hood "insert" or "liner" is a ventilation appliance specifically designed to be installed inside an enclosure (such as a suitable kitchen cabinet, or a custom-built enclosure). Range hood inserts and liners do not have their own "body", and must be mounted inside an enclosure. All ProLine "Insert/Liner" range hoods include the liner panel, as well as the Blower and Control Unit
Island-Mount (range hood type):Refers to a range hood designed to be attached to the ceiling above the cooking surface (as opposed to a wall-mount range hood).
Mounting Height:The distance between the cooking surface and the range hood. For best performance, range hood should be installed at a height of 26" to 32" above the cooktop or range (30" is generally the standard).
Perimeter Suction Filter System:One of the latest developments in range hood technology, this engineering approach replaces traditional mesh filters with "air flow collector slots" surrounding a center panel (or panels). Air flow speeds up when forced through a smaller space, creating an "air curtain" effect to trap airborne contamination. In addition, the smooth solid surface of the center panel is an important aspect of the modern design of the hoods featuring this technology. Also called: "parametric suction", "perimeter aspiration", other variations. Our Proline models PLVW 499.30 & PLVW 499.36 are excellent examples of this technology.
Range Hood:A kitchen appliance that hangs above the cooking surface and eliminates air pollution produced by cooking, via a combination of filtering and extracting air.
Remote Blower:Refers to the placement of the blower outside the range hood (but still inside the house, i.e. in the attic or between joists, as opposed to an external blower). Synonymous with "inline blower".
Steam:Water vapor created by the cooking process. One of the forms of airborne pollution caused by cooking. Can act as a carrier for other forms of pollution, and can damage kitchen cabinetry by condensing on surfaces and attracting mold and fungi growth.
SuperQuiet: Our PLJW Professional Models have a special operation mode built in called "SuperQuiet", in this mode the Range Hood operates at its most efficient audible level compared to the volume of air movement based on the blower size. This results in the quietest setting and largest volume of air movement for these types of hoods.
Tempered Glass:Glass that has been toughened by a special process to increase its strength. Unlike regular glass, tempered glass is extremely hard to break. Once tempered, the glass panel is almost impossible to cut or modify - this is why mounting holes and beveled edges are cut at the factory before the tempering process. The tempered glass used on ProLine range hoods is clear transparent, although it may be colorized on some photos to make the glass stand out against the white background. It is worth noting that due to the chemical changes during the annealing process, the edge of tempered glass will have a slight green tint to it (same as other forms of tempered glass, such as auto glass or security glass).
Undercabinet (range hood type):Refers to a range hood designed to be installed under a cabinet. In the past these were among the least expensive types (compared to island-mount and wall-mount range hood types), however in many new kitchen configurations, there are 30" to 60" fully ducted, under cabinet hoods. The economy under cabinet hoods suffer from several disadvantages: their small form factor limits blower power and duct size; design impact is minimal or nonexistent; hood dimensions typically need to match the cabinetry, limiting choices.