Triangle Fans

Triangle Whole House Fans

Service-free and quiet as a whisper, these fans come with Triangle Engineering's unique Automatic Belt Tensioning that extends motor life and eliminates the need for manual belt adjustments.

Our Triangle fans are available with the following options:

  • Wall-mounted controls
  • Two-speed/variable speeds
  • Belt drive
  • Horizontal or vertical mount
  • Insulated louver covers (during winter when fan is not in use)

We offer the best price on the Triangle Engineering built whole house fans. Everything we do comes with a 10 year warranty including all parts and labor. Call us at 916-801-4396 today!

The steady rise of cost for electricity means this fan will pay for itself in savings over just a few years!
Plus many power companies now offer a rebate incentive!

Our TRIANGLE FANS feature:
  • Two speed motor
  • Wall switch is standard
  • Patented automatic belt adjusting
  • Deep pitch four-wing blade for maximum air movement
  • Rubber mounted, sealed fan shaft bearings
  • 1"x4" wood frame, ready to install
  • Rubber damper between fan and wood frame for quieter operation
  • Heavy gauge steel welded construction
  • Die cast aluminum hub and balanced blades
  • Optional between the truss box designed to fit between ceiling joists or truss cords that are 24" on center
  • No truss-cut installation
  • Sealed ball bearing motor
  • 4-paddle balanced blade assembly
  • UL listed
    Automatic SHUTTERS feature:
    • Heavy-duty extruded aluminum frames and louvers with felted edges for effective sealing
    • Frame has 3/16" diameter mounting holes
    • Tie rod on each side of shutter assures uniform blade opening when fan is on
    • Blades have anti-friction pivot pins for fast, minimum-load opening and closing action
    • Shutters open and close automatically, keeping out air, insects and dust
    • Choice of standard, no-cut joist shutter or BT (between the joist) shutter
    • Optional shutter to fit between trusses or ceiling joist up to 36"
    • White polyester baked enamel finish blends with the white ceiling finish
      whole house fans, northern california


      Whole House Fans:
      • Fans are built by Triangle Engineering
      • We install Belt Driven only
      • We carry five different sizes to best fit your home
      • All fans are 2-speed
      SIZE      1/3hp CFM          1/2hp CFM
      24" 5,600 – 3,700 N/A
      30" 7,600 – 5,100 8,400 – 5,600
      36" 9,700 – 6,400 10,600 – 7,100
      42"  N/A 12,600 – 8,400
      48"  N/A 14,500 – 9,700
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