The Broan AE80B is a high-performance bathroom ventilation fan designed for effective moisture removal and energy efficiency. This 80 CFM (cubic feet per minute) fan is ideal for rooms up to 75 square feet and is engineered to operate quietly at 0.7 sones while maintaining continuous operation. Its user-friendly design, including room-side installation features and a TrueSeal™ damper, makes it a preferred choice for both DIY users and professional installers.
This article provides a detailed, step-by-step installation guide for the Broan AE80B, based on official product documentation and technical specifications from verified sources. The guide includes essential information on installation requirements, hardware features, and performance characteristics to ensure a safe and effective installation.
Overview of the Broan AE80B
The Broan AE80B is part of the Flex™ Series of bathroom exhaust fans and is marketed as a solution for reducing humidity, preventing mold and mildew growth, and maintaining indoor air quality. It is constructed with corrosion-resistant galvanized steel and features a polymeric grille for a clean, modern aesthetic. The fan includes a permanently lubricated AC motor, which supports continuous operation and reduces maintenance needs.
Key specifications from the product documentation include:
- Airflow Capacity (CFM): 80
- Sound Level (Sones): 0.7
- Duct Size: 4-inch round
- Grille Dimensions: 11.25 in. (L) x 12 in. (W)
- Housing Dimensions: 9.25 in. (L) x 10 in. (W) x 5.75 in. (H)
- Voltage: 120 V AC at 60 Hz
- Current Rating: 0.3 A
- Power Consumption: 26.9 W
- Material: 26-gauge galvanized steel
- Certifications: ENERGY STAR® certified, UL Listed, HVI Certified
These specifications highlight the AE80B's efficiency, durability, and suitability for modern bathroom environments. It is particularly suitable for retrofitting existing installations or for new construction where attic access is limited or unavailable.
Installation Requirements and Considerations
Before beginning the installation process, it is important to review the system requirements and installation considerations to ensure compatibility with the existing structure and electrical system.
1. Room Size and Ventilation Needs
The Broan AE80B is recommended for rooms up to 75 square feet. This capacity ensures that the fan can effectively remove moisture and maintain air quality in most standard full bathrooms. It is not recommended for larger spaces or for use as a general room ventilation system.
2. Mounting and Structural Fit
The AE80B is a ceiling-mounted unit designed to fit into standard ceiling joist spaces. The fan housing has dimensions of 9.25 in. (L) x 10 in. (W) x 5.75 in. (H), making it suitable for installation in standard ceiling cavities. The unit includes foldable mounting ears and a hanger bar system that allows for secure attachment to the ceiling joists without the need for attic access.
3. Electrical Requirements
The fan operates on a standard 120 V AC power supply at 60 Hz and draws a current of 0.3 A. It is important to ensure that the electrical circuit supplying the fan is properly grounded and protected with a Ground-Fault Circuit Interrupter (GFCI) if installed over a bathtub or shower. The fan is UL listed for use in these conditions when connected to a GFCI-protected branch circuit.
4. Ductwork and Airflow Path
The fan includes a 4-inch round duct fitting with a tapered sleeve and a TrueSeal™ damper. The damper is designed to reduce air leakage by up to 50% compared to other models, preventing backdrafts of cold or warm air. The duct connection should be made using rigid or flexible ductwork, ensuring a secure and airtight connection to prevent energy loss and noise transmission.
5. Accessibility and Maintenance
The room-side installation feature of the AE80B eliminates the need for attic access, simplifying both installation and future maintenance. The grille is removable and can be cleaned as needed. The motor is permanently lubricated and designed for long-term use without additional maintenance.
Step-by-Step Installation Instructions
The installation of the Broan AE80B can be completed using the following step-by-step process. These instructions are based on the official installation guidelines provided by Broan-NuTone and other verified sources.
Step 1: Prepare the Installation Area
- Ensure the ceiling cavity is clear of obstructions and that the ceiling joists are accessible.
- Confirm that the ceiling thickness allows for the fan housing to fit without interference.
- If replacing an existing fan, disconnect the power supply and remove the old unit.
Step 2: Assemble the Fan Housing
- Unpack the AE80B and identify all components, including the fan housing, motor assembly, grille, and mounting hardware.
- If necessary, assemble the foldable mounting ears and hanger bar according to the manufacturer’s instructions.
- Attach the fan motor to the housing using the provided screws or connectors.
Step 3: Mount the Fan Housing
- Position the fan housing into the ceiling cavity and align it with the ceiling joists.
- Secure the fan using the hanger bar system and foldable mounting ears.
- Ensure the fan is level and securely fastened to the ceiling structure.
Step 4: Connect the Ductwork
- Attach the 4-inch round duct fitting to the fan using the tapered sleeve.
- Connect the duct to the exhaust system, ensuring that the connection is airtight and secure.
- If using flexible ducting, ensure that it is not kinked or obstructed and that it is properly supported.
Step 5: Install the Grille
- Slide the grille over the fan housing and secure it in place using the provided fasteners.
- Ensure that the grille is aligned and seated evenly against the ceiling surface.
Step 6: Wire the Fan to the Electrical System
- Turn off the power supply at the circuit breaker.
- Connect the fan’s wiring to the home’s electrical system, following standard electrical code requirements.
- Use a GFCI-protected circuit if the fan is installed over a bathtub or shower.
- Ensure that all wiring connections are secure and insulated.
Step 7: Test the Fan and Finalize the Installation
- Restore power to the circuit and test the fan to ensure it operates smoothly and without noise.
- Check for any air leaks around the duct connection and fan housing.
- Confirm that the TrueSeal™ damper closes properly and that airflow is consistent.
- If applicable, install a light fixture or timer if the fan includes optional features.
Technical and Performance Features
The Broan AE80B includes several technical and performance features that enhance its functionality and user experience:
1. Low Noise Operation
The fan operates at 0.7 sones, which is significantly quieter than many standard bathroom fans. This low noise level ensures that the fan can run continuously without causing discomfort or distraction.
2. Energy Efficiency and Certification
The AE80B is ENERGY STAR® certified, indicating that it meets energy efficiency standards set by the U.S. Environmental Protection Agency (EPA). This certification ensures that the fan uses less energy than non-certified models, contributing to lower electricity bills and reduced environmental impact.
3. Durable Construction
The fan is constructed with 26-gauge galvanized steel, which provides resistance to corrosion and durability in high-moisture environments. The polymeric grille is also resistant to warping and staining, ensuring a long service life.
4. TrueSeal™ Damper Technology
The fan includes a TrueSeal™ damper that prevents air backdrafts and reduces energy loss. This feature is particularly beneficial in homes with forced-air heating and cooling systems, as it helps maintain indoor temperature and reduce energy waste.
5. Room-Side Installation
The AE80B is designed for room-side installation, eliminating the need for attic access. This feature simplifies the installation process and reduces the risk of damaging drywall or insulation during installation.
6. UL and HVI Certification
The fan is UL Listed for use over bathtubs and showers when connected to a GFCI-protected branch circuit. It is also HVI (Home Ventilating Institute) certified, indicating that it meets industry standards for performance, durability, and reliability.
Troubleshooting and Maintenance
Although the Broan AE80B is designed for long-term use with minimal maintenance, occasional troubleshooting may be necessary. Common issues and their solutions include:
- Fan Not Starting: Check the power supply, circuit breaker, and wiring connections. Ensure that the fan is properly grounded.
- Excessive Noise: Verify that the fan is securely mounted and that the mounting ears are fastened correctly. Check for loose or damaged components.
- Poor Airflow: Inspect the duct connection for leaks or obstructions. Ensure that the TrueSeal™ damper is functioning properly.
- Damper Not Closing: Clean the damper and surrounding area to remove dust or debris. Check for signs of wear or damage and replace the damper if necessary.
- Grille Discoloration or Staining: Clean the grille with a mild detergent and water. Avoid using abrasive cleaners or solvents.
For more detailed troubleshooting, refer to the manufacturer’s technical support documentation or contact Broan-NuTone’s customer service.
Conclusion
The Broan AE80B is a versatile, energy-efficient bathroom exhaust fan suitable for both new and retrofit installations. Its low-noise operation, durable construction, and room-side installation features make it an attractive option for users seeking reliable and effective ventilation solutions.
By following the step-by-step installation instructions and considering the technical specifications and performance features outlined in this guide, users can ensure a successful and trouble-free installation. The fan’s ENERGY STAR® certification, UL Listing, and HVI Certification further support its reliability and compliance with industry standards.
For additional support or detailed technical documentation, users are encouraged to consult the manufacturer’s official resources or seek assistance from a qualified technician.