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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
Part Number
RM WHF-4.0-DG2
Category
Roof-Mount Whole House Fans
Available to Order
Also known as:RM WHF-4.0-DG2QUIETCOOL
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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
Maximum Airflow - Range
3,000 to 4,999 cfm
For High-Static Pressure Applications
Yes

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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 attic ventilation — QUIETCOOL AFG SMT ES-3.0 gable-mount fan for attics up to 4,000 sq ft with thermostat and fire safety shutoff
Roof-mounted attic exhaust — QUIETCOOL AFR SMT ES-2.0 for attics up to 3,000 sq ft, delivering 2,116 cfm at 0.000 in SP
Solar-powered attic ventilation — QUIETCOOL AFR SLR-40W roof-mount fan with 40-watt panel for attics up to 1,900 sq ft
Whole-house cooling — QUIETCOOL QC ES-7000 RF ceiling-mount fan with 24 in blade, 6,878 cfm, and two-speed control
Gable-mount attic exhaust with smart control — QUIETCOOL AFG SMT PRO-3.0 with Smart Control Hub for attics up to 4,000 sq ft
Solar gable-mount attic ventilation — QUIETCOOL AFG SLR-40W with 40-watt solar panel for attics up to 2,600 sq ft
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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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Compatible alternatives & equivalents

Cross-referenced by specification & description
QUIETCOOL
QUIETCOOL
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
QUIETCOOL
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 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
QUIETCOOL
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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