Lennox's most popular and highly-regarded furnace is the SLP99V from the Dave Lennox Signature Collection. It is the brand's flagship model, offering an industry-leading efficiency rating of up to 99% AFUE and variable-capacity operation for exceptionally precise, quiet, and even heating.
Lennox Furnace Models
Below are some of the best furnace brands for different homeowner priorities:
Cost of Lennox Air Conditioners
Below, we break down Lennox furnace costs based on furnace size, SEER rating, unit type, and labor fees. Homeowners can expect to pay between $3,200 and $8,000+, or $5,600 on average for a Lennox furnace, depending on the model.
Furnaces typically last 15–20 years with proper care. Harsh climates and missed maintenance shorten their lifespan. Warning signs include rising fuel use and frequent repairs.
For example, the Lennox SLP98V Variable-Capacity Gas Furnace is at least 50 percent quieter than competitor's furnaces, making the SLP98V gas furnace the quietest furnace you can buy1. SilentComfort™ is achieved by utilizing variable-speed technology.
Lennox® furnaces are some of the most efficient and quietest heating systems you can buy*. They're engineered for perfect warmth and savings.
Dave Lennox Signature® Collection (DLSC) is the ultimate in creating the ideal home for your customers. From supreme efficiency to unprecedented performance, this product family delivers incomparable comfort.
When choosing a furnace, the best brand depends on what you prioritize: reliability, high-end efficiency, or budget-friendly value. Based on industry consensus and consumer ratings, the top three furnace brands are Carrier, Trane, and Lennox.
The best time to buy a furnace is during the off-season, specifically late spring (April-May) or early autumn (September-October), when HVAC companies are less busy and offer lower prices, rebates, or promotions. Purchasing in these shoulder seasons ensures faster installation times and better negotiating power compared to winter peak season.
ENERGY STAR certified oil furnaces that use certain fuels are eligible. The equipment must be rated by the manufacturer for use with fuel blends at least 20 percent of the volume of which consists of biodiesel, renewable diesel, or second-generation biofuel.
The Elite Series is a strong choice for homeowners looking for dependable performance at a reasonable cost. The Lennox Signature Series represents the highest level of performance and innovation offered by Lennox. These systems are designed for maximum efficiency, advanced comfort control, and premium features.
The Lennox EL297V is a high-efficiency (up to 97% AFUE), two-stage gas furnace with a variable-speed blower. The unit alone typically costs between $4,000 and $6,000, depending on the BTU capacity. With professional installation, the total average price ranges from $5,000 to $8,600.
An 80,000 BTU furnace typically heats between 1,500 and 2,500 square feet. The exact area it can effectively warm depends heavily on your local climate, ceiling height, and how well your home is insulated.
The $5,000 rule is a guideline to help homeowners decide whether to repair or replace their HVAC system. You multiply the age of your unit by the cost of the needed repair. If that number exceeds $5,000, replacing your HVAC system is often more cost-effective.
Yes, you should highly consider replacing a 30-year-old furnace. Most furnaces have a lifespan of 15 to 20 years. At 30 years old, your system has likely outlived its expected life. It is operating at a much lower efficiency than modern units and presents a significantly increased risk of catastrophic breakdown or dangerous carbon monoxide leaks.
For a 2,200-square-foot home, you will typically need a furnace rated between 60,000 and 100,000 BTUs, depending heavily on your climate zone and home insulation.
HVAC Energy Efficiency
Even when compared to other top-of-the-line options, like Carrier, Lennox comes out on top. This leads to energy savings which leads to budget savings. Though other HVAC systems may be cheaper, the long-term energy savings provided by Lennox help make up the difference.
The average Lennox furnace cost installed ranges from $3,200 to $10,000, depending on the furnace series, home size, and installation complexity.
Lennox prioritizes maximum efficiency, while Trane emphasizes durability and consistent performance. Lennox offers slightly higher AFUE efficiency, while Trane focuses on reliable modulating performance. Both use variable-speed technology, but Lennox leads in peak efficiency ratings.
Choosing the right furnace can make a big difference in your comfort, energy bills, and long-term maintenance costs. In this guide, we'll compare six of the most trusted furnace brands in North America: Lennox, Carrier, Trane, Goodman, Bryant, and Rheem.
Lennox furnaces are primarily manufactured in North America, with the majority of production taking place in the United States. The brand's major HVAC and furnace production facilities are located in Marshalltown, Iowa, Stuttgart, Arkansas, and Saltillo, Mexico.