Since I don't have nor used the 30" fan I can't compare, but under my 24" fan I can say it sounds much like a box fan. One room away (20') I can barely here it and in my kitchen two rooms away I don't even know its on other than a nice breeze.
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Ventamatic Whole House Fan, 30in., 5950 CFM, Belt-Drive, Model# CX30BD2SPD

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- Designed for houses with 2,000 - 3,000 sq. ft. attics
- Steel construction, aluminum fan blade assembly, and dual ball bearing technology with automatic shutter
- Joist-in or joist-out installation
- For ceiling install only - not for wall exhaust use
- 2-speed operation with included dual high/low and on/off wall switch
Prop 65 Warning: See Details
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Description
Key Specs
Reviews
Q & A
Warranty
Compare
Product Summary
What's Included
- (1) Whole House Fan (1) Shutter Assembly (1) White On/Off and Hi/Low Wall Switch with Plate (1) Hardware Package
Downloads
Features + Benefits
- Designed for houses with 2,000 - 3,000 sq. ft. attics
- Steel construction, aluminum fan blade assembly, and dual ball bearing technology with automatic shutter
- Joist-in or joist-out installation
- For ceiling install only - not for wall exhaust use
- 2-speed operation with included dual high/low and on/off wall switch
- Requires 10 - 12 sq. ft. (1,440 to 1,728 sq. in.) of NFA
- C/UL/US Listed
- 10-year limited warranty
Key Specs
| Attribute | Specification |
|---|---|
item# | 17235 |
Brand | Maxx Air |
Manufacturer's Warranty | 10 year limited warranty |
Ship Weight | 2.0 LB |
Air Delivery | 5,950 cfm |
Outdoor Rated | No |
Volts | 120 |
| Attribute | Specification |
|---|---|
Fan Diameter | 36 in |
Assembly Required | No |
Housing Material | Metal |
Primary Color | White |
Secondary Color | Silver |
Speeds (qty.) | 2 |
Hardwired | Yes |
Reviews
Questions & Answers
Questions
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· 12 years ago
How does the noise level of the 30in fan compare to the 24in fan Some coments indicated the 24in fan was noisy
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Arian· 12 years ago
Helpful?
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ProductExpert38· 12 years ago
The 30 inch Whole House Fan has the same decibel rating as the 24 inch fan. The decibel rating is 50-55. A normal conversation is approximately 45 decibels.
Helpful?
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· 8 years ago
Do you offer an insulation package for these for Winter season?
We live in New England so we would want to keep heat loss to a minimum in the Winter obviously. It does not look like the louvers would do much for that.
1 answer-
ProductExpert30· 8 years ago
At this time Northern Tool would not carry an insulation kit for the fans.
Helpful?
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· 10 years ago
What material is the shutter assembly made of?
What material is the shutter assembly made of? Aluminum, steel or plastic?
1 answer-
ProductExpert30· 10 years ago
The shutters are made out of Aluminum.
Helpful?
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· 10 years ago
Dimensions of the shutter assembly
What is the Max. dims. of the shutter assembly so I can see What size fan shutters will fit between my hall walls?
1 answer-
ProductExpert40· 10 years ago
This 30 inch whole house fan requires an opening of 32 1/4" X 29 1/2".
Helpful?
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· 13 years ago
Do the shutters automatically open when the fan is on, and auto close when the fan is turned off?
1 answer-
ProductExpert26· 13 years ago
When mounted horizontally, the shutters open when the fan is on and shut when the fan is off.
Helpful?
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· 14 years ago
Can I order the shutter assembly only?
I am trying to replace my old ceiling mounted shutter assembly that is leaking air because it has a few bent louvers and is very old. My shutter measures 32 1/2" X 33". this measurement is the outside dimensions.
1 answer-
ProductExpert38· 14 years ago
We do not currently offer the shutter assembly separately. Individual parts may be available through the manufacturer.
Helpful?
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· 15 years ago
How many CFMs does this fan have?Model#BD-30-2-WHS
Is there any installations instructions online for fan and damper? How does the damper install without cutting joists,in my case trusses?
1 answer-
ProductExpert9· 15 years ago
The Air Delivery (CFM) is 5,400 or 7,800.
We do have a product manual on our Northern Tool site. Look for the PDF on the left side of the page under Content Links.
The manual does have complete installation instructions.Helpful?
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Warranty
Manufacturer's Warranty
10 year limited warranty
Compare with Most Popular in Whole House Fans
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Specifications
5,950 cfm
4,425 cfm
1,150 cfm
9,675 cfm
No
No
No
No
120
120
115
120
36 in
30 in
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No
No
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Metal
Metal
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White
White
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Silver
Silver
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2
2
1
2
Yes
Yes
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70
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lb
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27.0 x 17.5 x 11.0 in
40 x 41.5 x 14.5 in



