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Open Box: Suncourt Flush Fit Smart Register Booster Fan

SKU: bstock-sc11370V  |  Model: HC500-W
$3598 $5999
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This Open Box: Suncourt Flush Fit Smart Register Booster Fan has been fully inspected and tested to ensure proper functionality. You can buy confidently knowing every open-box comes with our 30-day money back guarantee. A great option if you're looking for quality and savings.

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A bedroom at the end of a long duct run often stays warmer in summer and colder in winter than the rest of your home, because too little conditioned air makes it that far. The Suncourt Flush Fit booster fan fixes that at the register itself. Its built-in electronic thermostat detects when heated or cooled air arrives, turns on 2 internal fans, and shuts them off once the cycle ends or the room reaches temperature.

Setup is plug-and-play. Drop the booster into the existing vent opening, then plug it into a standard outlet. It fits both floor and wall registers, so you can place it wherever the weak vent happens to be in the room.

Key Features and Benefits of the Suncourt Flush Fit Smart Register Booster Fan

  • Airflow Boost: The booster's 2 internal fans move up to 132 CFM through the register, pushing more conditioned air into rooms that run too hot or cold.
  • 5 Fan Speeds: Manual speed selection across 5 settings lets you match airflow to how much help a room needs, from a gentle assist to a full boost.
  • Smart Thermostat Activation: Patent-pending technology with an electronic thermostat senses heated or cooled air and cycles the fans automatically, so you never have to remember to switch it on.
  • 4-Watt Draw: The fans use just 4 watts and 0.125 amps, so running the booster all season adds very little to your household energy use.
  • Low Noise: Rated at 53 decibels and 2.0 sones, the fans produce a soft hum you will barely notice during normal daily activity.
  • ETL Listed: ETL certification means the booster fan has been tested to recognized electrical safety standards, giving you confidence in a fan that sits inside your ductwork.
  • Plug-In Power: A 6-foot power cord with the included power adapter plugs into any standard 110 to 120-volt outlet, so you need no hardwiring.
  • Compact Footprint: Measuring 11.625 x 5.625 x 1.5-Inches (L x W x H) and weighing 1.45 pounds, the booster sits flush inside the register opening without raising the vent cover.
  • Color Options: Choose brown or white trim to blend the booster into your floors or walls.
  • 12-Month Warranty: The booster is made in the United States and covered by a limited warranty, so you are protected if a defect appears.

Will a 4 x 10 Booster Fit Your Vent?

Measure the duct opening under your current vent cover before anything else: this booster is sized for 4 x 10-inch openings, and its 1.5-inch depth needs that much room below the register face. Ceiling registers are out, since the fan is not designed for overhead installation.

Once it is in place, treat the 5 speeds as a dial for how far behind a room is. A lower setting suits a room that drifts only slightly from your thermostat setting, while the top speed is worth using in a space at the far end of the duct run. You can also run the fans continuously between heating and cooling cycles to keep air moving in a stuffy room.

Sylvane's Expert Take

If one of your rooms never quite matches your thermostat setting, this booster is a low-effort fix that works best on floor or wall registers fed by long duct runs. The thermostat activation matters most, because the fans run only when your HVAC system is actually pushing air.

Brown and white trims perform identically, so pick whichever disappears into your floor or wall. For a stubborn room, it is worth trying before you consider reworking ductwork.

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