The Broan 679 Ventilation Fan and Light Combination is a compact, all-in-one solution designed for bathroom use. It blends a powerful exhaust fan with a built-in light, streamlining installation and saving space. This unit targets homeowners seeking a reliable, low-profile bathroom ventilation option that improves air quality while providing ambient illumination. The following article covers key specifications, performance, installation considerations, maintenance, and practical pros and cons to help readers decide if the Broan 679 fits their needs.
Overview
The Broan 679 combines a bathroom exhaust fan with a 100-watt equivalent incandescent or LED-capable light in a single housing. It is designed for ceiling mounting and is compatible with standard 4-inch ducting for easy integration into most bathroom layouts. The unit is UL-listed for safety and is commonly used in residential bathrooms, powder rooms, and small utility spaces where both ventilation and lighting are beneficial. The compact form factor helps with retrofit projects in tight ceilings or apartments.
Technical Specifications
- CFM: Approximately 70 CFM for standard bathrooms, with optimized airflow for small to medium spaces.
- Sones: Low to moderate noise level, typically around 1.0–2.0 sones depending on duct length and installation.
- Power: AC motor operation, with integrated light fixture compatible with standard bulbs or compatible LEDs.
- Lighting: Built-in light output suitable for general bathroom illumination; check bulb compatibility for LED options.
- Electrical: 120V wiring with standard junction connections; requires proper switch control for fan and light separately or together.
- Ducting: 4-inch round ducting; maximum duct length varies by installation.
- Housing: Ceiling-mounted snug profile designed for drywall ceilings; corrosion-resistant materials for bathroom environments.
Performance And Noise
The 70 CFM rating provides adequate airflow for most small to medium bathrooms, helping to reduce humidity and odors after showers. Noise levels are kept relatively low, making the unit suitable for bedrooms adjacent to bathrooms or multi-use spaces. Real-world performance depends on duct routing, filter condition, and ceiling height. Longer runs or multiple bends can reduce effective CFM and raise perceived noise, so proper installation practice is essential for optimal results.
Installation And Wiring
Installing the Broan 679 typically involves: turning off power, cutting a ceiling opening, mounting the housing, connecting the duct, and wiring the fan and light to the switch. Many homeowners use a single switch to control both functions, while others install separate switches or a dual-switch setup. It is important to follow the included installation instructions and local electrical codes. A pre-wired junction box and mounting screws are usually included in the package, simplifying the retrofit process in standard 2×4 or 2×6 ceiling builds.
Tips For A Smooth Install
- Plan duct route to minimize elbows and length for maximum efficiency.
- Seal all joints with appropriate HVAC-rated sealant to prevent air leaks.
- Use a dedicated breaker or GFCI outlet as required by local code.
- Inspect the light bulb compatibility; LED bulbs may provide longer life but verify fixture compatibility.
Energy Efficiency And Lighting
Energy efficiency in the Broan 679 is driven by the combination of ventilation and lighting in a single unit. While the fan uses modest electricity, pairing it with LED-compatible lighting can significantly reduce energy use compared to separate fixtures. If LED compatibility is used, ensure the LED bulbs meet electrical ratings and heat-dissipation requirements of enclosed fixtures. The compact design minimizes heat buildup in the ceiling cavity, aiding in safer operation and longer component life when properly ventilated.
Maintenance And Longevity
Maintenance for the Broan 679 is straightforward. Regularly inspect and replace the light bulb as needed, and clean the grill or grille cover to maintain airflow. The fan motor is designed for durable operation, but performance may decline if dust accumulates in the fan housing or ducting. Periodic cleaning and ensuring the duct length remains within recommended limits extend the unit’s life and preserve efficiency. If vibration or unusual noise occurs, check mounting screws and duct connections for secure fitment.
Pros And Cons
- Pros: Space-saving design, combined ventilation and lighting, straightforward installation, affordable for small bathrooms, UL-listed for safety.
- Cons: Limited CFM for larger bathrooms, performance sensitive to duct routing, light bulb replacement may require enclosure access, fixed housing may limit upgrade options.
Replacement Parts And Availability
Replacement parts for the Broan 679, including light bulbs compatible with the fixture and grills or covers, are typically available through major home improvement retailers and HVAC suppliers. When replacing components, verify model compatibility to avoid mismatches. If a full unit replacement is necessary, check for newer Broan models with updated energy standards or improved efficiency while preserving the same installation footprint.
Alternatives And Comparisons
For larger bathrooms or higher humidity zones, consider models with higher CFM ratings or humidity-sensing features. Alternatives may include separate exhaust fans and dedicated lighting fixtures or other Broan units with smart features and better LED integration. When comparing, weigh factors such as CFM, Sones, bulb compatibility, noise ratings, and ease of retrofit to ensure the selected option aligns with room size and usage patterns.