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QUIETCOOL RM WHF-4.0-DG2 Roof-Mount Whole House Fan - Roof-Mount Whole House Fans
QUIETCOOLRoof-Mount Whole House Fans

QUIETCOOL RM WHF-4.0-DG2 Roof-Mount Whole House Fan

The QUIETCOOL Whole House Fan: Roof Mount (SKU RM WHF-4.0-DG2, MPN RM WHF-4.0-DG2) is a roof-mount whole house fan with a 22-inch blade, delivering a maximum airflow of 3,543 cfm and coverage of 2,771 sq ft. It…

SKU 3G-OTH-81433

Also listed as: RMWHF40DG2 · RM WHF 4 0 DG2 · RM-WHF-4-0-DG2

Brand
QUIETCOOL
Item
RM WHF-4.0-DG2 Roof-Mount Whole House Fan
Category
Roof-Mount Whole House Fans
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

QUIETCOOL
Manufacturer Part Number
RM WHF-4.0-DG2
Type
2,771 sq ft Coverage, Low Noise
Max.
3,543 cfm
Blade
22 in
Speeds
3
Quiet Design
Yes
Nominal Voltage
115V AC, Single Phase
Number of Speeds
3
Mounting Location
Roof
Nameplate Voltage
120V AC
Rough Opening Type
Square
Speed Controllable
Yes
High-Efficiency Motor
Yes
Motor Efficiency Broad
High-Efficiency Motor
Maximum Airflow - Range
3,000 to 4,999 cfm
For High-Static Pressure Applications
Yes

Technical Documents

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QUIETCOOL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The QUIETCOOL Whole House Fan: Roof Mount (SKU RM WHF-4.0-DG2, MPN RM WHF-4.0-DG2) is a roof-mount whole house fan with a 22-inch blade, delivering a maximum airflow of 3,543 cfm and coverage of 2,771 sq ft. It operates on 115V AC, single phase (nameplate 120V AC), features three speeds, and is speed controllable. Designed for high-static-pressure applications, it includes a high-efficiency motor and a quiet design, with a square rough opening.

Frequently Asked Questions

What is the QUIETCOOL roof-mount whole house fan used for?

The QUIETCOOL RM WHF-4.0-DG2 roof-mount whole house fan is designed to ventilate residential or commercial spaces up to 2,771 sq ft. It exhausts hot indoor air through the roof, drawing in cooler outside air, reducing reliance on air conditioning. Its high-static-pressure capability suits ducted or restricted installations.

What are the specifications of the QUIETCOOL RM WHF-4.0-DG2?

This QUIETCOOL fan has a 22-inch blade, maximum airflow of 3,543 cfm, and covers 2,771 sq ft. It operates on 115V AC single phase (nameplate 120V AC), offers three speeds, and is speed controllable. Features include a high-efficiency motor, quiet design, and square rough opening for roof mounting.

Where to buy the QUIETCOOL RM WHF-4.0-DG2 worldwide?

3G Electric supplies the QUIETCOOL RM WHF-4.0-DG2 roof-mount whole house fan to customers worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and a shipping quote to your region.

How to install a QUIETCOOL roof-mount whole house fan?

Install the QUIETCOOL RM WHF-4.0-DG2 by cutting a square rough opening in the roof, securing the fan housing, and sealing against leaks. Wire the 115V AC single-phase motor per local codes, using a speed controller if desired. Ensure attic ventilation is adequate for the 3,543 cfm airflow.

Used in

Common applications for QUIETCOOL
Residential whole-house ventilation — QUIETCOOL QC CL-4700 RF ceiling-mount fan for cooling large homes up to 2,207 sq ft
Attic temperature management — QUIETCOOL AFG SMT ES-3.0 gable-mount fan for attics up to 4,000 sq ft with thermostat control
Solar-powered attic exhaust — QUIETCOOL AFG SLR-40W gable-mount fan for off-grid or energy-saving installations
Garage exhaust ventilation — QUIETCOOL GA ES-1500 garage-mount fan for removing heat and fumes from garages up to 2,300 sq ft
Roof-mounted attic ventilation — QUIETCOOL AFR SMT ES-2.0 roof-mount fan for attics up to 3,000 sq ft with fire safety shutoff

QUIETCOOL Products

3G Electric supplies QUIETCOOL roof-mount whole house fans. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Ceiling-mount whole house fan with 24-inch blade delivering up to 6,924 cfm for spaces up to 3,462 sq ft. Features a round duct shape, rectangular rough opening, and two-speed control for high-static pressure applications. Operates on 115V AC single-phase power with a standard-efficiency motor and quiet design
Ceiling-mount whole house fan with 18-inch blade delivering up to 4,415 cfm, covering 2,207 sq ft. Operates on 115V AC single-phase, two speeds, speed controllable. Designed for low noise and high-static-pressure applications such as long duct runs or restrictive grilles
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Ceiling-mount whole house fan with 18-inch blade delivering up to 4,415 cfm, covering 2,207 sq ft. Operates on 115V AC single-phase, two speeds, speed controllable. Designed for low noise and high-static-pressure applications such as long duct runs or restrictive grilles
Ceiling-mount whole house fan with a 22-inch blade delivering up to 5,665 cfm for spaces up to 2,833 sq ft. Operates on 115V AC single phase with two speeds and speed control. Designed for low-noise operation in high-static pressure ducted applications. Features a round duct shape and rectangular rough opening
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Ceiling-mount whole house fan with a 22-inch blade delivering up to 5,665 cfm for spaces up to 2,833 sq ft. Operates on 115V AC single phase with two speeds and speed control. Designed for low-noise operation in high-static pressure ducted applications. Features a round duct shape and rectangular rough opening
Ceiling-mount whole house fan with a 20 in blade delivering up to 5,024 cfm for spaces up to 2,512 sq ft. Features a round duct shape, rectangular rough opening, and two-speed controllable operation on 115V AC single-phase power. Designed for low-noise performance in high-static-pressure applications such as long or restricted duct runs
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Ceiling-mount whole house fan with a 20 in blade delivering up to 5,024 cfm for spaces up to 2,512 sq ft. Features a round duct shape, rectangular rough opening, and two-speed controllable operation on 115V AC single-phase power. Designed for low-noise performance in high-static-pressure applications such as long or restricted duct runs
Ceiling-mount whole house fan with 18 in blade, delivering up to 4,195 cfm for coverage of 2,098 sq ft. Features a high-efficiency motor, two speeds, and speed controllability. Operates on 115V AC single phase (nameplate 120V AC) and is designed for high-static-pressure applications. Suitable for ventilating residential spaces with long or restricted duct runs
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Ceiling-mount whole house fan with 18 in blade, delivering up to 4,195 cfm for coverage of 2,098 sq ft. Features a high-efficiency motor, two speeds, and speed controllability. Operates on 115V AC single phase (nameplate 120V AC) and is designed for high-static-pressure applications. Suitable for ventilating residential spaces with long or restricted duct runs
Ceiling-mount whole house fan with a 22-inch blade, delivering up to 5,576 cfm and covering 2,788 sq ft. Operates on 115V AC single-phase power, two speeds, speed controllable. Designed for low noise and high-static pressure applications, includes a high-efficiency motor. Requires a rectangular rough opening
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Ceiling-mount whole house fan with a 22-inch blade, delivering up to 5,576 cfm and covering 2,788 sq ft. Operates on 115V AC single-phase power, two speeds, speed controllable. Designed for low noise and high-static pressure applications, includes a high-efficiency motor. Requires a rectangular rough opening

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Roof-mount whole house fan with a 22-inch blade delivering up to 3,543 cfm for ventilating up to 2,771 sq ft. Features a high-efficiency motor, three speeds, and quiet operation. Designed for high-static-pressure applications such as restrictive ductwork or long attic runs. Operates on 115V AC (nameplate 120V AC) and requires a square rough opening
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Roof-mount whole house fan with a 22-inch blade delivering up to 3,543 cfm for ventilating up to 2,771 sq ft. Features a high-efficiency motor, three speeds, and quiet operation. Designed for high-static-pressure applications such as restrictive ductwork or long attic runs. Operates on 115V AC (nameplate 120V AC) and requires a square rough opening
Roof-mount whole house fan with 22-inch blade delivering up to 3,543 cfm, covering up to 3,439 sq ft. Operates on 115V AC single-phase power (nameplate 120V AC) with three speeds and a high-efficiency motor. Designed for quiet operation and high-static-pressure applications, with a square rough opening for roof mounting
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Roof-mount whole house fan with 22-inch blade delivering up to 3,543 cfm, covering up to 3,439 sq ft. Operates on 115V AC single-phase power (nameplate 120V AC) with three speeds and a high-efficiency motor. Designed for quiet operation and high-static-pressure applications, with a square rough opening for roof mounting
Roof-mount whole house fan with 22-inch blade, delivering up to 3,543 cfm and covering up to 2,831 sq ft. Features a high-efficiency motor, three speeds, and speed controllability for high-static-pressure applications. Operates on 115V AC single phase (nameplate 120V AC) with quiet design. Suitable for ventilating living spaces by exhausting hot air through the roof
QUIETCOOL
Roof-mount whole house fan with 22-inch blade, delivering up to 3,543 cfm and covering up to 2,831 sq ft. Features a high-efficiency motor, three speeds, and speed controllability for high-static-pressure applications. Operates on 115V AC single phase (nameplate 120V AC) with quiet design. Suitable for ventilating living spaces by exhausting hot air through the roof