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Doors are hard to open
Are
outward-opening doors hard to open? Do they slam shut? Are Inward-opening
doors hard to close? If so, you need make-up air
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Drafts flow toward
exhaust
Cold
air flows in and rushes directly toward the exhaust, creating a serious draft
problem. Make-up air eliminates drafts!
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Smoke in the Kitchen
If
your kitchen exhaust system isn't getting enough air to carry away smoke and
food odors, it's starved! Feed it make-up air.
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Frigid Walls &
Windows
Starved
exhaust systems suck icy outdoor air through cracks in walls and windows. The
result: employees and customers suffer.
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Fickle Flames &
Pilots
Do
downdrafts blow pilots out or cause heater flames to keep changing? They do
if your exhaust system isn't getting enough air.
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Leaky Walls & Roofs
Is
rain "sucked" through cracks in walls and windows? Do mysterious
leaks appear in roofs? Could be a negative pressure problem!
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A Forest of Chimneys
No
chimney can work without air. A forest of chimneys is a sure sign they're
fighting each other for a supply of make-up air.
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Burned-out exhaust
motors
Exhaust
motors should last ten years. If yours have to fight for make-up air, you'll
have to replace them much more often.
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Stale locker rooms.
Are
your locker rooms stale and odorous? Ventilation is essential ... but also
impossible without make-up air!
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Employees out sick
Cold
air infiltration makes work stations near doors and outer walls hard to heat.
Absenteeism rises when temperature drops!
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Fumes and Odors
Odors
can't always be avoided, but a healthy exhaust system can get rid of them . .
. providing it is fed an adequate supply of make-up air.
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Flies can't stay out
Flies
collect at doorways near warmth and food odors. They're sucked inside by the
"negative pressure" when doors are opened.
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Poor paint jobs
Uniform
paint coverage requires a steady flow of clean air. Backdrafts and
fluctuating air flow cause varied coverage and waste.
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Corrosion of steelwork
If
structural steel or metal roofing is gradually being consumed by corrosive
vapors, the exhaust isn't working properly.
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Dust and Debris
Housekeeping
is an endless problem! Dust and dirt are drawn in continously through every
opening when the exhaust is operating.
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Lazy outlet shutters
Outlet
shutters stay half closed when they should be wide open, flutter with the
slightest breeze or indoor air pressure change.
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