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Whisper Heat Furnace
WhisperHeat® NATURAL GAS FURNACE

Comfort so quiet, you'll forget it's running.Lennox: Comfort since 1865


Like Mom, the WhisperHeat® furnace protects you from the cold, harsh winter

Remember those days you spent outside playing in the snow, sledding and ice-skating? When you were having too much fun to notice the bitter cold? And when you got home with numb ears and a runny nose, Mom was waiting with dry clothes and a hot meal to warm you. Well, you can recreate those same warm feelings with a WhisperHeat® furnace by Lennox. Originally manufactured in 1989, the WhisperHeat furnace still provides comfortable and quiet home heating - the old fashion way.

Silence Is Golden

Listen to that quiet furnaceHave you ever taken early morning winter walks when the snow was falling and all you could hear was the crunch of your footsteps underneath you? Peace and quiet is precious, particularly today when life is hectic. If you value the serenity of your home, the WhisperHeat® furnace is the right choice for you. The WhisperHeat furnace is the quietest furnace around by design. It is a natural draft furnace, which means it requires fewer moving parts to operate. Obviously, with fewer parts there is less noise generated. And, the parts that are in the furnace were designed to run quieter. For example, the WhisperHeat's special ribbon burners eliminate the "whoosh" noise of a furnace at start up, and its dynamically balanced blower reduces vibration. All of these things come together to offer you the quietest furnace on the market today.

Dave with the WhisperHeatBuilt For Life

Technology moves at a very rapid rate. Virtually every appliance in your home today is an improvement of past technology. Lennox, an industry innovation leader, also offers unique, technologically advanced products. However, sometimes you just want a product that can satisfy your needs. For those who like traditional product values, Lennox offers the WhisperHeat gas furnace. The WhisperHeat furnace has been around since 1989 keeping families comfortable. Its quality and reliability have been proven over time.

 

Quality Home Comfort

Diagram of the WhisperHeat Furnace at Work
Your furnace typically resides inside the home in a variety of locations. The supply ducts forces warmed air into the home after the air has traveled cross the heat exchanger. At the same time the return duct is pulling the cooler air from the home sending it past the heat exchanger, starting the cycle over again.

 

Recognition of Quality

Good Housekeeping Seal
Lennox is proud of the fact that the WhisperHeat® furnace has earned the reputable Good Housekeeping Seal. ISO 9002And we build according to an ISO 9002 registered quality system.

Quality Dealers
You Can Count On

A Lennox Dealer Choosing the right dealer is every bit as important as choosing the right brand of equipment. Every Lennox Dealer, which includes independently owned and operated businesses, has to meet the Lennox Quality Dealer standards. We think you'll agree they're a big reason why you can count on getting quality service whenever you call your Lennox Dealer.

Quality Components Quality Components

1. Duracurve® Heat Exchanger -- Designed to increase efficiency and durability, as well as reduce air turbulence for quiet operation.

2. Draft Diverter -- Vents itself without an electric induced draft blower, making it much more quiet and energy efficient.

3. Electronic Ignition -- Increases safety and efficiency by eliminating the standing pilot light.

4. Indoor Air Blower Control -- Customizes air flow to meet the comfort demands of your home.

5. Ribbon Burners -- Quiet operation eliminates annoying "whoosh" of flame at start up.

6. Burner Box -- Increases efficiency by trapping excess heat and using it to heat your home, instead of letting it escape up the flue.

Easy Maintenance

7. Easy Filter Replacement -- Simple air filter design allows easy access for filter replacement.

Efficient Design

8. Quiet Operation -- Insulated blower compartment and cabinet, combined with super quiet blowers, help lower Sound levels.

The Home Friendly Furnace

Technology moves at a very rapid rate. Virtually every appliance in your home today is an improvement of past technology. Lennox, an industry innovation leader, also offers unique, technologically advanced products. However, sometimes you just want a product that can satisfy your needs. For those who like traditional product values, Lennox offers the WhisperHeat gas furnace. The WhisperHeat furnace has been around since 1989 keeping families comfortable. Its quality and reliability have been proven over time.


Table of Components of the WhisperHeat

WhisperHeat Gas Furnace Specifications

 
G20 Q2E-50 Q3E-50 Q2E-75 Q3E-75 Q4E-75 Q3/4E-100
Input Btuh (kW) 48,000 (14.1) 48,000 (14.1) 75,000 (22.0) 75,000 (22.0) 75,000 (22.0) 100,000 (29.3)
Output Btuh (kW) 38,000 (11.1) 38,000 (11.1) 59,000 (17.3) 59,000 (17.3) 60,000 (17.6) 79,000 (23.1)
AFUE 78.0% 78.0% 78.0% 78.0% 78.0% 78.0%
Nominal Add-On Cooling - Tons 1, 1-1/2, or 2 2-1/2 or 3 1, 1-1/2, or 2 2-1/2 or 3 3-1/2 or 4 3, 3-1/2 or 4
kW 3.5, 5.3 or 7.0 8.8 or 10.6 3.5, 5.3 or 7.0 8.8 or 10.6 12.3 or 14.1 10.6, 12.3 or 14.1
Electrical Data - 60hz 120 volts - 1 phase (less than 12 amps) All Models
Shipping Weight - lbs. (kg) 148 (68) 153 (69) 160 (73) 160 (73) 183 (83) 206 (93)
Dimensions - H.W.D. (in.) 49x16-1/4x28-3/8 49x16-1/4x28-3/8 49x16-1/4x28-3/8 49x16-1/4x28-3/8 49x21-1/4x28-3/8 49x21-1/4x28-3/8
Dimensions - H.W.D. (mm) 1245x413x721 1245x413x721 1245x413x721 1245x413x721 1245x540x721 1245x540x721
G20 Q5/6E-100 Q3/4E-125 Q5/6-125 Q5/6E-150
Input Btuh (kW) 100,000 (29.3) 125,000 (36.6) 125,000 (36.6) 150,000 (44.0)
Output Btuh (kW) 79,000 (23.1) 99,000 (29.0) 98,000 (29.0) 120,000 (35.2)
AFUE 78.0% 78.0% 78.0% 78.0%
Nominal Add-On Cooling - Tons 5 or 6 3, 3-1/2 or 4 5 or 6 5 or 6
kW 17.6 or 21.1 10.6, 12.3 or 14.1 17.6 or 21.1 17.6 or 21.1
Shipping Weight - lbs. (kg) 247 (112) 247 (112) 252 (112) 294 (133)
Dimensions - H.W.D. (in.) 53x26-1/4x28-3/8 53x26-1/4x28-3/8 53x26-1/4x28-3/8 53x31-1/4x28-3/8
Dimensions - H.W.D. (mm) 1346x667x721 1346x667x721 1346x667x721 1346x795x721
Note: Due to Lennox' ongoing commitment to quality, all specifications, ratings and dimensions are subject to change without notice.


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