NuTone Ventilation Fans—Sizing Guide

Easy steps for choosing and sizing the right ventilation fan for your home.

Determine which rooms could use ventilation, and how much is needed. Spot ventilation is used in localized areas to remove moisture, odor and airborne pollutants quickly. Most commonly used in the bath or powder room, spot ventilation can also be used in a laundry room, exercise area, closet, or bedroom, wherever air should be changed frequently. Decorative and recessed models can be ideal solutions for these situations. According to the Home Ventilating Institute, Air Changes per Hour (ACH) for comfortable and healthy living should be as follows: Bathrooms:

8 changes, Kitchens: 15 changes,

Living/bedrooms: 6 changes. NuTone bath fans, utility fans and high capacity fans meet these needs.

Calculate the air movement necessary for proper ventilation. Air movement is measured in Cubic Feet per Minute (CFM). To determine CFM requirements, first determine the size of your room. Measure and multiply the length, width and ceiling height of your

room to determine cubic footage. Then use the multiplication factor of

.13 and round up to the next “ten.” See the three examples that follow.

Performance

A good ventilation fan is the product of research, testing and listening to the needs of consumers.At NuTone we build these desires into ventilation products that provide the best mix of power, sound and quality for every budget.

Example 1: Bathroom with 8' ceiling: 7' wide x 9' long x 8' high x .13 = 66. Select a bath fan with at least

70 CFM.

Example 2: Bathroom with 9' ceiling: 10' wide x 9' long x 9' high x .13 =

105.Select a bath fan with at least

110CFM.

Example 3: For a bathroom with a vaulted ceiling, use the average ceiling height at the wall and the peak:

8' wide x 12' long x ((8' at wall + 12' at peak) / 2 = 10') average height x .13 = 125. Select a fan(s) with at least 130 CFM.

Account for long duct runs

and ductwork that turns before it reaches the exterior vent.

When airflow is restricted in any way it slows down. Just as a car must slow down for a sharp corner, air decelerates when going through a turn in a duct run. Whenever possible, create a straight duct run with large radius turns, if they’re necessary at all. Rigid ductwork is optimal because airflow restriction is minimized. Flexible tubing may be convenient to install, but resistance is created as air is moved over the spiral metal frame of the tubing. With long duct runs or ducts with multiple turns the fan works harder, noise increases and fan performance (CFM) is compromised. Select a fan model with an even greater CFM ratio to compensate.

6" ducting overcomes most

performance-related installation issues.

NuTone’s QTXSeries fans deliver high performance in virtually any real-world installation.They are engineered with a 6" duct connector for peak air movement and extremely quiet operation, even when the duct run is not short and straight.

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NuTone QTXEN, QTREN, QTRN, QTXN manual NuTone Ventilation Fans-Sizing Guide, Changes, Kitchens 15 changes
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QTXEN, QTXN, QTRN, QTREN specifications

The NuTone range of ventilation fans, including models QTXEN, QTREN, QTXN, and QTRN, showcases exceptional performance and efficiency for residential and commercial spaces. These models are widely recognized for their advanced features designed to enhance indoor air quality while minimizing noise levels.

One of the standout characteristics of the NuTone QTXEN and QTREN models is their ultra-quiet operation. Engineered with powerful motors and sound-absorbing materials, these fans operate at an impressive noise level of just 0.3 sones. This feature makes them ideal for use in bathrooms, kitchens, and living spaces where tranquility is desired.

In terms of efficiency, the NuTone fans are equipped with Energy Star-certified motors that consume less energy without compromising on performance. This not only contributes to lower energy bills but also demonstrates a commitment to environmentally friendly designs. The models are designed to move a significant amount of air, delivering CFM (cubic feet per minute) ratings that efficiently mitigate moisture and odors.

The QTXN and QTRN fans incorporate innovative technologies such as the Adjustable Airflow System, which allows users to customize the air exchange rate based on personal preferences and room requirements. This adaptability is a significant plus for varied spaces, allowing for optimal ventilation.

Installation is straightforward with the IntelliSense Mounting System provided in these models. This user-friendly mechanism accommodates different ceiling types and sizes, ensuring that even DIY novices can install the fans effortlessly.

In addition to their performance and efficiency, the NuTone QTXEN, QTREN, QTXN, and QTRN fans are designed with aesthetics in mind. The sleek, unobtrusive design allows them to blend seamlessly into any home decor while providing necessary ventilation.

Other notable features include integrated humidity sensors in some models, which automatically activate the fan when moisture levels rise, promoting a dryer and healthier environment. Additionally, installing these fans helps in reducing the likelihood of mold and mildew, which can pose serious health risks.

In summary, the NuTone QTXEN, QTREN, QTXN, and QTRN ventilation fans stand out for their quiet operation, energy efficiency, advanced airflow technology, easy installation, and modern design. They are a perfect choice for homeowners and businesses seeking effective indoor air quality solutions without the disruptive noise commonly associated with traditional ventilation systems.
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