Suncourt Register Booster Fan for Floor Vents, Quiet Vent Fan (HC600) | Vent fan booster fits 4×10, 4×12, 6×10 & 6×12 registers; auto on/off; up to 300% more airflow; made in USA since 1988

Price: $64.99
(as of Aug 11, 2026 16:54:52 UTC – Details)

From the brand

Suncourt has been improving indoor air quality and comfort since 1988.

Family-owned and based in Durant, Iowa, Suncourt’s smart, energy-saving airflow solutions are built to last and easy to install. All products are engineered and assembled in the USA and exceed industry standards for safety, reliability, and performance.

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What types of airflow control solutions do you offer?

Our wide range of products include dryer booster kits, radon mitigation kits, inline HVAC fans, vent/register booster fans, room-to-room fans, motorized dampers, and more.

Are Suncourt products safe?

Absolutely—every product meets or exceed rigorous industry standards for safety, reliability, and long-term use.

Are Suncourt products easy to install?

Yes—Suncourt designs its airflow solutions with simple installation in mind. Ideal for both DIYers and professionals.

BOOST AIRFLOW TO HOT & COLD ROOMS: This Suncourt register booster fan and vent fan booster acts as a powerful airflow booster and HVAC booster fan, increasing airflow up to 300% to pull more heated or cooled air into stuffy rooms that never feel comfortable—with no HVAC modifications, extra ducting, or contractor required.
ULTRA-QUIET WITH 8 ADJUSTABLE SPEEDS: Unlike a noisy vent booster fan, this quiet register booster fan and air vent booster fan runs whisper-quiet while delivering up to 200 CFM. Dial in 8 fan speeds to fine-tune airflow and comfort in any bedroom, office, nursery, or living space.
FITS MOST FLOOR REGISTERS & VENTS: This floor register booster fan drops into floor vents 6×12 and smaller—including 2×10, 2×12, 3×10, 3×12, 4×10, 4×12, 6×10, and 6×12 registers. Measure the inside of the duct opening (not the cover) for a flush, low-profile fit over your air vent.
AUTO ON/OFF, TOOL-FREE SETUP: Patented smart sensing turns this AC vent booster on automatically when your HVAC heats or cools—no switches, thermostat wiring, or seasonal settings. Installs in seconds: set it in the register and plug into any standard outlet with the 6-ft power cord.
AMERICAN-MADE, BUILT TO LAST: Engineered and assembled in the USA since 1988, this low-voltage, energy-efficient register vent fan and duct booster fan uses flame-retardant, thermally protected materials for safe, reliable performance—backed by a 3-year warranty.

Product summary

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