Can you hook up a speed control to this booster?

No you do not want to use a speed controller. You will burn this motor out in days. You want to use speed controllers on centrifugal fans, not booster fans. The motor is ment for the rated voltage, nothing more nothing less. Please don't listen to the comments saying speed controllers are compatible with this booster fan.

Would this fan properly vent a 1000w hps lamp?

I am cooling two 600 W HPS lamps with a single fan and it works well

Will it overheat with a flow blockage?

Very small motor like a bathroom exhaust fan. Will not overheat because not an air tight situation.

I could definitely hook this up on a timer, but is it okay if the fan happens to run when the AC is not? (Context, booster for one of my bedrooms)

If the AC fan is not running, the duct fan will *tend* to draw air from registers in other rooms rather than through the idle ac unit. So, it will still work to equalize temperatures between rooms, which is likely your goal. On the negative side, it will be drawing from the ceilings, the hottest part of the rooms.

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VIVOSUN 4" Metal Inline Fan 100 CFM, Exhaust Fan for Home Ventilation | Low Noise HVAC Fan for Basements, Bathrooms, Kitchens and Attics, Non-variable speed

Product ID: 30245394

Details

Brand
VIVOSUN
Color
Silver
Electric fan design
Exhaust Fan
Mounting Type
Duct Mount
Power Source
Electric
Product Dimensions
4"D x 7"W x

💨100 CFM airflow

🔇<30 dB ultra-quiet

⚙️2930 RPM brushless motor

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Description

💨 Elevate your airflow game—quiet, powerful, and built to last!

DURABLE METAL BUILD - Reinforced corrosion-resistant metal ensures long-lasting, maintenance-free performance.
VERSATILE INSTALLATION - Perfect for basements, bathrooms, kitchens, attics, and even grow rooms—boost your air quality anywhere.
WHISPER QUIET OPERATION - Enjoy peace and productivity with noise levels below 30 decibels—barely noticeable.
POWERFUL AIRFLOW COMPACT DESIGN - Maximize ventilation with a sleek 4-inch fan delivering 100 CFM in tight spaces.
ENERGY EFFICIENT LOW MAINTENANCE - 14W brushless motor with permanently lubricated bearings means reliable, eco-friendly operation.

The VIVOSUN 4 Inch Inline Duct Fan delivers a robust 100 CFM airflow with a whisper-quiet noise level under 30 dB. Featuring a durable, corrosion-resistant metal frame and a high-speed 2930 RPM brushless motor, this compact fan fits seamlessly into tight spaces like basements, bathrooms, and kitchens. Designed for energy efficiency and low maintenance, it’s the smart ventilation upgrade for any modern home or workspace.

Specifications

ASIN	B01C82SYZ0
Air Flow Capacity	100 Cubic Feet Per Minute
Best Sellers Rank	#28,491 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #109 in Household Ventilation Fans
Blade Length	4 Inches
Blade Material	Plastic
Brand Name	VIVOSUN
Cable Length	5.5 Feet
Collection Name	Inline Duct Fans
Color	Silver
Control Method	App
Controller Type	Button Control
Customer Reviews	4.2 4.2 out of 5 stars (9,769)
Electric Fan Design	Exhaust Fan
Finish Type	Painted
Included Components	Cord
Indoor Outdoor Usage	Indoor
Installation Type	built-in
Is Product Cordless	No
Item Dimensions D x W x H	4"D x 7"W x 4"H
Item Weight	1.7 Pounds
Manufacturer	VIVOSUN
Material	Metal
Model Name	vivosun
Model Number	331101-4
Motor Type	Brushless
Mounting Type	Duct Mount
Noise Level	30 Decibels
Number of Blades	3
Number of Power Levels	1
Number of Speeds	3
Part Number	CECOMINOD070342
Power Source	Electric
Recommended Uses For Product	Basements
Room Type	Bathroom
Size	4"& No Speed Controller
Special Features	Lightweight, Portable
Speed	2930 RPM
Style	Modern
Switch Type	Push Button
UPC	714119466250
Unit Count	1.0 Count
Voltage	120 Volts
Warranty Description	Manufacturer Warranty for 360 days from date of purchase.
Wattage	14 watts

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$70.11

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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