Specifications

Ventilation Solutions, Options and Tips
Venting Up and Out
Ductwork Tips and Techniques
Remote Fans: In-line, Roof Mounted, Outdoor Wall Mounted
Ceiling Surface Mounted Fans
• Use rigid duct whenever possible for better air flow
• If using flex duct, support it with strapping to avoid dips
• Use a short piece of flex duct at the fan connection to break vibration noise in the duct
• Insulate any ducts in un-conditioned spaces to avoid condensation and energy loss
• Think in straight lines — avoid as many elbows as possible
• Two 45° elbows allow bet
ter airflow than one 90°
• Expanding
the duct from 4" to 6" promotes better air flow and reduces noise
• Seal all joints, seams and connections with mastic. See page 31. Use duct tape for anything
except ducts.
• Run ducts in inside walls if possible. Make duct runs continuous. Wall cavities are not ducts.
• Shorter runs perform better — locate ventilation equipment to achieve short duct runs and
good per
formance
• Use for single point or spot
ventilation
• Use timers or speed controls for continuous
or intermittent whole house ventilation
• Can be used to ventilate single point or multiple points
• Can be used for Range Hoods — taking much of the noise out of
the kitchen
• Can be used to boost dryers with long runs
• Can be used to circulate heat or AC for overall balance
• Can be used for sub-slab or crawl
space ventilation
• Use
timers or speed controls for continuous or intermittent whole
house ventilation
Single or Two-point Exhaust Range Hood Exhaust Dryer Boost Sub Slab or Crawl Space Ventilation
Venting Down and Out
Exhaust through a wall to avoid bends
National distributor shipping direct throughout the United States
to place orders or for more information:
800 / 876 / 0660
 fax 888 / 440 / 4219
Wisconsin 800 / 962 / 7015
 Wisconsin fax 920 / 757 / 6452
headquarters 40 Washington Street, Westborough, Massachusetts 01581 • www.efi.org/wholesale
Remote
Mounted Fan
Remote Mounted
Fan or HRV
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