The Broan Model 671 is a widely used bathroom exhaust fan designed for efficient ventilation and quiet operation. This article provides a detailed overview of its installation process, compatibility with accessory kits, and performance specifications. The information is derived exclusively from official product documentation, technical specifications, and compatibility data from manufacturer and retailer sources.
Overview of the Broan Model 671
The Broan Model 671 is a 70 CFM (cubic feet per minute) exhaust fan suitable for bathrooms up to 65 square feet in size. It is constructed with a rugged galvanized steel housing and is certified for both air and sound performance by AMCA (Air Movement and Control Association). The unit is UL Listed and designed to operate at 120 volts with a current draw of 1.15 amps. It produces 6 sones, a measure of sound level that ensures relatively quiet operation during use.
The Model 671 supports both ceiling and wall mounting, offering versatility in installation depending on the user’s needs and bathroom layout. Its dimensions are compact, measuring 9 inches in length, 9 inches in depth, and 4 inches in height, making it suitable for a wide range of bathroom configurations.
Compatibility with Accessories and Upgrade Kits
The Broan Model 671 can be upgraded using several accessory kits designed to enhance functionality and aesthetics. One of the most popular upgrade options is the Broan QuicKit™ 60 CFM Exhaust Fan Kit (model BQK60), which is specifically compatible with the Model 671. This kit includes a white grille with a quick-connect plug and is designed to fit into existing fan housing dimensions of 7-1/2" x 7-1/4". The QuicKit allows for an easy, tool-free installation that can be completed in under five minutes. It is UL Listed and HVI (Home Ventilating Institute) certified for air and sound performance.
Another notable accessory is the Broan Sensonic™ Quick Installation Grille with LED Light and Speaker (model FG800SPKS). This grille allows users to upgrade a non-lighted or incandescent fan to a modern LED-equipped unit with Bluetooth speaker functionality. Installation is streamlined with a pass-thru plug system that eliminates the need for complex wiring or cutting. The grille is designed to blend with modern ceiling aesthetics, featuring a bright white finish that matches most common ceiling paints.
The Broan FGR101 grille is also compatible with the Model 671 and is designed for quick retrofitting of existing Economy Series fans. This cover is particularly useful for users who want to conceal drywall cuts and achieve a seamless look without additional patching or cutting. It is suitable for models including the 671 and fits into the standard 7-1/2" x 7-1/4" housing.
Installation Guidelines
Installation of the Broan Model 671 involves securing the fan unit to the ceiling or wall, connecting the ductwork, and wiring the electrical connections. The following steps provide a general overview based on the specifications and features described in the source material.
1. Preparation and Tools
Before beginning installation, ensure the following tools and materials are available: - Drill and appropriate bits - Screwdriver - Wire stripper and pliers - Duct tape or foil tape - Ladder or scaffolding for ceiling access - Electrical tape
It is recommended to turn off the power at the circuit breaker before starting any electrical work to ensure safety.
2. Mounting the Fan Housing
Secure the fan housing to the ceiling or wall using the provided mounting brackets. The Model 671 supports both ceiling and wall mounts, allowing for flexible placement depending on the layout of the bathroom. Ensure the mounting surface is sturdy and able to support the weight of the fan unit.
If retrofitting an existing fan, remove the old unit carefully to avoid damaging the surrounding drywall or ceiling. The QuicKit™ and FGR101 grille kits are designed for retrofitting and do not require additional cutting or patching of the drywall.
3. Connecting the Ductwork
The Model 671 is designed to work with 3-inch round ducts, which should be connected to the fan using a duct adapter. Ensure the duct runs are as short and straight as possible to minimize airflow resistance and noise. Use foil or duct tape to secure the connections and prevent air leaks.
For optimal performance, avoid sharp bends in the duct path and ensure the duct is properly insulated if it passes through unconditioned spaces such as attics or crawl spaces.
4. Electrical Connections
Connect the wiring according to the manufacturer’s specifications. The Model 671 operates on 120 volts and requires a standard electrical connection. If upgrading to a QuicKit™ or Sensonic™ grille with LED lighting, ensure the wiring supports the additional load and that the electrical connections are properly insulated.
If the installation involves a new electrical line, it is advisable to consult a licensed electrician or follow local electrical codes to ensure compliance with safety regulations.
5. Final Assembly and Testing
Once the fan is mounted, the ductwork is connected, and the electrical wiring is complete, reattach the grille or cover. For QuicKit™ and Sensonic™ upgrades, ensure the quick-connect plug is fully engaged and the grille is securely in place.
Turn on the power and test the fan to ensure it operates smoothly and without unusual noise. If the fan includes LED lighting or a Bluetooth speaker, verify that these features function correctly and that the controls are responsive.
Performance Specifications and Certifications
The Broan Model 671 is designed for efficient and quiet operation, making it suitable for modern bathrooms that require both ventilation and noise control. Below are the key performance specifications based on the source material:
| Specification | Value |
|---|---|
| Airflow (CFM) | 70 |
| Sound Level (Sones) | 6 |
| Power (Volts) | 120 |
| Current (Amps) | 1.15 |
| Duct Size | 3 in. Round |
| Mounting Options | Ceiling, Wall |
| Material | Galvanized Steel |
| Certification | UL Listed, AMCA Licensed |
The unit is HVI certified for both air and sound performance, ensuring it meets industry standards for ventilation efficiency and noise control. It is not Energy Star compliant, but its 70 CFM rating is sufficient for most standard bathroom applications.
Maintenance and Care
To maintain the performance and longevity of the Broan Model 671, regular cleaning and inspection are recommended. Dust and debris can accumulate on the fan blades and in the ductwork over time, reducing airflow efficiency and increasing noise levels. Use a soft brush or vacuum to clean the fan blades and duct interior periodically.
If the fan includes an LED light or speaker, ensure these components are free from dust and moisture, as these can affect performance and lifespan. If the fan becomes excessively noisy or fails to operate, it may indicate a need for professional inspection or replacement.
Conclusion
The Broan Model 671 is a versatile and reliable exhaust fan suitable for standard bathroom applications. It offers a balance of performance, quiet operation, and ease of installation, making it a popular choice among U.S. consumers and DIY enthusiasts. With the availability of upgrade kits such as the QuicKit™ and Sensonic™ grille, users can enhance the functionality and aesthetics of their existing fan without the need for major renovations.
Installation is straightforward for those with basic tools and knowledge of electrical work, and the unit’s compact design allows for flexible mounting options. Regular maintenance is recommended to ensure continued performance and longevity.