3Dimension™ TWO-STAGE VARIABLE-SPEED GAS FURNACE

Lennox high-efficiency two-stage, variable-speed gas furnace takes you to a whole new Dimension in home comfort!

The 3Dimension™ gas furnace provides blanket coverage for your home.

Like hot soup when you're sick, 3Dimension™ gas furnace is good for what ails you; hot spots, drafts, dampness, not to mention the cold harsh temperatures outside your home.

The 3Dimension furnace uses two-stage heating to deliver a more consistent and comfortable temperature throughout your home while its variable-speed technology delivers the required amount of air in the home to make sure you're comfortable at all times.

Nothing Sounds Better

Hate things that go bump in the night? Like, maybe, your furnace turning on? Then you'll love the 3Dimension™ gas furnace. Extra efforts have been made to make the 3Dimension one of the quietest furnaces around: added insulation, a two-speed combustion blower motor and even a very low-speed continuous fan. All this to allow you to sleep like a baby.

Built For Life

Just as pyramids of long ago, the 3Dimension furnace is built to transcend time. Strong, sturdy and built with only the finest materials, this furnace will provide years of comfort. And you don't have to go to Egypt to see this work of art. From conception to production, our furnaces go through several series of rigorous tests. We purposely subject our equipment to extreme conditions. And we run-test each and every unit before it leaves the factory. We are proud that Lennox quality standards are among the toughest in the industry.

Breathe Easier

The 3Dimension furnace can play a significant role in battling indoor air pollution. It's a fact that 50% of all illnesses are either caused by, or are aggravated by, poor indoor air quality. To improve air circulation within the home, the 3Dimension furnace is equipped with a dedicated low speed for continuous fan operation. This allows more air to continuously move slowly and quietly through the system and indoor air quality products, such as electronic air cleaners or dehumidifiers. The relative humidity within the home should be between 30-60% to minimize the growth of bac-terial and biological organisms. A variable-speed unit, such as the 3Dimension, TM combined with a humidity control device, such as the EfficiencyPlus™ , can adjust your homes humidity to keep you more comfortable.

Customize Your Comfort

Do you like it hot and others in your family do not? Or is there a room in your home that always seems to ignore the thermostat? Then zoning with the 3Dimension gas furnace will keep your family in comfortable harmony.

Save Comfortably

The 3Dimension furnace offers more comfort for every energy dollar you spend. No matter how warm your furnace keeps you, a high energy bill will send a cold shiver up your spine. With an efficiency rating of up to 94.2%, the 3Dimension gas furnace not only keeps you cozy, it can reduce your energy bills when compared to older, lower efficiency furnaces. The additional monthly savings means you'll be comfortable with the return on your investment for years to come.

This chart compares the average 3-year savings you can expect from the 3Dimension furnace versus older furnaces with lower efficiency ratings. Costs are based on industry averages for a typical 3-bedroom house in a city with 2,000 heating hours, with a 100,000 Btuh load, and $.63 ccf for gas. Your actual savings will vary depending on the weather, local fuel rates, and your lifestyle.

Go With a Sure Thing
SureLight™ Ignition
When it comes to safety and reliability, second best is simply not good enough. That's why Lennox has an ignition system that is the safest, surest, most intelligent hot surface ignition system available today.

The SureLight™ ignition system features an igniter made of a virtually unbreakable material -- silicon nitride. Accelerated life-cycle testing on this igniter has proven its remarkable reliability.

But the igniter is just half the story. The SureLight ignition system also features a patented "adaptive technology" control module that's intelligent enough to determine just how much energy is needed to light the burners without overheating the igniter. No other hot-surface ignition system is as reliable.

The Comfortable Way to Heat Your Home
Two-Stage Heating
Two-stage heating reduces temperature swings within your home, maintaining a consistent, comfortable and preferred temperature. Most of the time the furnace operates in the first stage or low heat for greater efficiency and comfort. On colder days, if first stage can not satisfy the heating demand, it switches to high heat or the second stage. Standard, single-stage furnaces only offer one level of heat - high.

Take Control of Your Comfort and Your Energy Bills
Variable-Speed Technology
Think of variable-speed technology as your insurance for home comfort the way you prefer it. The variable-speed technology ensures that your home receives the amount of air required to keep you and your family comfortable. While you are enjoying exceptional comfort you are also saving money on your energy bills. That's right, variable-speed motors work so efficiently that they actually consume less electricity than standard furnace motors.

 Quality Components

1. DuralokPlus® Primary Heat Exchanger -- The heart of the 3Dimension furnace operates by burning the fuel inside the heat exchanger that warms the air traveling across the outside of the heat exchanger. Made of high-quality patented ArmorTuf™ aluminized steel, its patented crimped seam is a Lennox exclusive feature designed to provide longer life and safer operations.

2. Secondary Heat Exchanger -- Allows the furnace to reach higher efficiency levels by capturing every last bit of available heat and is made of rugged 29-4C stainless steel for corrosion resistance.

3. In-Shot Burners -- One-piece burner, designed and built by Lennox for quiet and reliable operation.

4. Insulated Blower Compartment And Cabinet -- Reduces noise for quiet operation.

Two-Stage Heating

5. Two-Stage Control Board -- Control center for two-stage operation.

6. Two-Stage Gas Valve -- Adjusts amount of gas to accommodate two stages of operation.

7. Two-Speed Combustion Air Blower -- Adjusts amount of air delivered to accommodate two stages of operation.

SureLight™ Ignition System

8. SureLight Control Board -- Patented adaptive technology adjusts to ever changing conditions for reliable operation.

SureLight Igniter -- Made of silicon nitride, a virtually unbreakable material.

Variable-Speed Technology

9. Variable-Speed Control Board -- Control center for variable-speed operation.

Quality Home Comfort

Recognition of Quality

Quality Dealers
You Can Count On

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.