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 Inch Inline Duct Fan 100 CFM, HVAC Exhaust Ventilation Fan with Low Noise for Basements, Bathrooms, Kitchens and Attics, Silver

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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€ 55.18

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Description

💨 Quiet power that fits anywhere—breathe easy, work smarter.

POWERFUL COMPACT - Delivers 100 CFM airflow in a sleek 4-inch design—perfect for tight spaces.
DURABLE METAL BUILD - Reinforced, corrosion-resistant metal ensures long-lasting reliability.
VERSATILE VENTILATION - Ideal for basements, bathrooms, kitchens, attics, and even grow rooms.
MAINTENANCE FREE MOTOR - Brushless, permanently lubricated bearing means zero upkeep hassle.
WHISPER QUIET OPERATION - Runs below 30 dB, so your focus stays uninterrupted.

The VIVOSUN 4 Inch Inline Duct Fan offers a robust 100 CFM airflow powered by a brushless motor spinning at 2930 RPM. Engineered with a corrosion-resistant metal frame and a permanently lubricated bearing, it guarantees quiet operation under 30 dB and maintenance-free reliability. Compact and lightweight, this fan is perfect for enhancing ventilation in confined spaces like basements, bathrooms, kitchens, and attics, making it a versatile upgrade for any modern home or workspace.

Specifications

ASIN	B01C82SYZ0
Air Flow Capacity	100 Cubic Feet Per Minute
Best Sellers Rank	#28,948 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #101 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 (9,761)
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	1.68 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
Smart Home Compatibility	Not Smart Home Compatible
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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