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Ventilation & Indoor Air Quality
Ceiling-mounted bathroom exhaust fan with square white grille, black duct outlet, and ENERGY STAR certification.
Bathroom exhaust fan with labeled dimensions, 4-inch duct connection, and listed product weight for installation planning.
Bathroom exhaust fan installed in a shower area highlighting powerful airflow, whisper-quiet operation, and effective moisture removal.
Side-by-side bathroom comparison showing foggy mirror before ventilation and clear mirror after exhaust fan use.
Three interior spaces—a laundry room, a bathroom, and an entryway—showing product suitability for different rooms.

Whisper Mighty® Fan, Pick-A-Flow®, 70/90 CFM

Model:

  • RG-M79A
The Whisper Mighty® fan is an ENERGY STAR®-Certified exhaust fan with Pick-A-Flow® CFM ideal for bathroom ventilation. The customizable Pick-A-Flow Speed Selector offers flexibility with a choice of airflow – 70 or 90 CFM – one fan…you choose your CFM. It simplifies the selection process and ensures optimum CFM performance.  It is powerful, extremely quiet, energy efficient, long lasting, and easy to install in the ceiling or wall.  Your clean air solution for ventilation in small-to-medium sized rooms. In addition to bathrooms, it is perfect for the laundry room, sunroom, basement, or garage. It will increase your air quality, eliminating humidity, mold, mildew, and other air pollutants from any room. 
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  • Extremely Quiet: With less than 0.7 sones at 70 CFM and 1.5 sones at 90 CFM – so quiet - you will hardly know this fan is doing its job
  • Sizing/Construction: For ceiling or wall, fits 2 in. x 6 in. stud walls with a 4 ¾ in. housing depth; pre-attached junction box, 4” duct adapter and includes all mounting hardware
  • UL Listed: Over a tub/shower enclosure when used with a GFCI- protected circuit
  • Code Compliant: ENERGY STAR Certified, HVI (Home Ventilation Institute) Rated and can be used to comply with ASHRAE 62.2
  • Warranty: 3 years on motor & parts from the date of original purchase

Additionl Features

Built-in, Pick-A-Flow® airflow selector provides the unique ability to select your required airflow of 70 or 90 CFM with the flip of a switch. With the flexibility to choose the proper CFM level, you are assured that one fan will satisfy a range of ventilation design requirements and perform, as promised, even with a complicated duct run.

Panasonic fans use less energy to move larger volumes of air than other fans, and they run cooler so they last longer, providing efficient ventilation and healthy indoor air for many years. The built-in thermal-cutoff fuse practically eliminates chances of overheating which can result in motor failure, which means this may be the last vent fan you ever buy.

ENERGY STAR® certified for energy efficiency & savings

ENERGY STAR®-certified vent fans meet strict parameters set by the US Environmental Protection Agency. Panasonic ventilation fans are ENERGY STAR certified and provide greater efficiency and healthier indoor air quality with less noise. High performance motors and improved blade design deliver the superior performance and long-life operation you expect from a Panasonic ventilation fan.
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