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Your Guide To Buying a Lennox Furnace

Your Guide To Buying a Lennox Furnace

Furnace shopping can be overwhelming, especially if you’re a new homeowner and this is your first time buying a furnace. Don’t worry—if you’re in the market for a new furnace, you’ve come to the right place. 

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Lennox has held its place as one of the most popular furnace brands on the market. With its popularity and long history in the HVAC industry, you’re probably curious whether Lennox is the right furnace for you. Luckily, the Hutchinson team has put together a comprehensive review just for you—so you can make the right, informed decision for your home.

Lennox Furnace Logo

Who Is Lennox?

Lennox manufactures its furnaces with one major component in mind: you. Since David Lennox founded Lennox International in 1895, Lennox has been pushing technological boundaries to produce furnaces with their customer’s top priorities as a driving force in production. 

5 Exclusive Lennox Furnaces Features

You deserve options. Lennox has them. 

Lennox manufactures ten gas furnaces in the following series:


  • Basic Option – Lennox Merit Series Furnaces  (ML)
  • Better Option – Lennox Elite Series Furnaces (EL) 
  • Best Option – Dave Lennox Signature Collection Furnaces (SL)

Lennox Merit Series Furnaces  (ML)

The Lennox Merit Series (ML) are single-stage furnaces with 80% to 90%-plus energy efficiencies. This basic option means that it has one power mode—and because of that, it will have the best price tag. 

Lennox Elite Series Furnaces (EL) 

Your next option is the Lennox Elite Series (EL), which are manufactured as both single-stage and two-stage furnaces with 80% and 90%-plus efficiencies. Two-stage furnaces come with two power modes which are great for evening-out temperatures in double-story buildings. 

Dave Lennox Signature Collection Furnaces (SL)

Jumping to the premium option of the three, the Dave Lennox Signature Collection Furnaces (SL) are manufactured as both two-stage and modulating furnaces with 80% Annualized Fuel Utilization Efficiency (AFUE) up to 98.7% AFUE.

Below we will discuss several features exclusive to the Merit, Elite, and Signature Collection.

1. Modulating Function

Featured on the Dave Lennox Signature Collection Furnaces (SL), a modulating function is necessary for optimum fuel efficiency. This function is vital for warming up those cold winter nights, especially when things start getting chilly near the upper East Coast.

2. Duralok Plus Heat Exchanger

A heat exchanger is used to transfer heat from one medium to another. While that may sound simple, a heat exchanger is actually the most important component of your gas furnace. All of Lennox’s high-efficiency (90%) condensing gas furnaces have a Duralok Plus heat exchanger installed. The Duralok Plus heat exchanger is made of ArmorTuf steel to resist cracking and improve energy efficiencies.

3. Most Efficient Gas Furnace

If you’re concerned about your energy efficiency, then the Dave Lennox Signature Collection Furnaces  (SL) will be your best choice. The Lennox Signature Collection can reach an astounding 98.7% AFUE—which means that only 2.3% of heat is lost during combustion. This results in a warmer, happier home for you and your family. 

4. SureLight Ignitor

Reliability and durability matter—especially when you live in cold winter climates. The last thing you want is for your furnace to break down during one of the coldest days of the year. The SureLight Ignitor is constructed with silicon nitride, which according to Lennox, means you can enjoy your Lennox furnace for years to come without running the risk of regular breakdowns.

5. SunSource Solar Modules

How do zero energy costs and no fossil fuel usage sound? Consider going solar with the SunSource solar home energy system. The SunSource uses 3’x6’ solar modules to capture the sun’s incredible solar energy and deliver that energy straight to your Lennox heat pump or solar-equipped central air. 

Add-Ons, Extras, and Thermostats

In addition to the cost-effective and energy-efficient features exclusive to the furnace series, Lennox also offers several extras and add-ons to improve the overall comfort of your home. 

Programmable Thermostats

Lennox manufactures a basic programmable thermostat called ComfortSense. The ComfortSense thermostat allows you to change the temperature of your home during different hours of the day regardless if you are home or away.

Zoning Systems

Zoning systems like the Lennox Harmony can work together with a programmable thermostat. Zoning systems help regulate the temperature of different rooms and maintain different temperature settings in separate areas of your home. Zoning systems are great for those with large homes or split and multi-level houses.

Air Purifiers

Keep your indoor air quality fresh and clean with Lennox’s air purification systems. These systems include the PureAir and PureAir S systems, which clean the air of harmful viruses, bacteria, mold, pollen, dust, and so much more. Lennox’s air purification systems also have a UV germicidal light, which further helps purify the air and keeps your HVAC system clear by killing germs, mold, and fungi.

Humidifiers and Dehumidifiers

Your home should have a harmonious balance of the right amount of moisture to cut the dry air—but it must be in moderation. Too much humidity can lead to issues like mold and moisture damage, while too little humidity can result in dry wood, dry skin, and sore throats. Luckily, Lennox has a wide selection of humidification and dehumidification systems to keep your entire home’s air properly balanced.

Heat and Energy Recovery Ventilators

Keeping your home’s air as fresh as a spring day is easy with Lennox’s heat and energy recovery ventilators. Heat and energy recovery ventilators help keep the air in your home circulating properly while eliminating stale and contaminated outdoor air—without changing the temperature.

Understanding Lennox Warranties

It’s good to have choices. At Lennox, you can have peace of mind over the warranty of your choosing. Lennox offers basic and extended warranty choices for your Merit, Elite, or Signature Collection furnace. Customize your coverage and choose between parts-only coverage or parts-and-labor coverage—so you can enjoy the comfort of your home without all the worries.

Talk to the Experts at Hutchinson

Want to learn more about whether or not the Lennox furnace is right for you? Chat with the experts at Hutchinson. Our team of professional customer service representatives is available 24/7 to New Jersey, Pennsylvania, and Delaware residents seeking out their best possible furnace options. Give us a call at (856) 420-6210.