Reasons Why You Should Upgrade to the Lennox SL280V Variable-Speed, Two-Stage Gas Furnace

Posted: 2022-12-06

Your furnace is responsible for converting fuel into usable heat that is then distributed throughout your home. But did you know that it produces carbon monoxide as a byproduct? If you have an old, inefficient furnace, your system likely produces more of this deadly gas.

Four Seasons Air Specialists is your trusted heating company in White Bear Lake MN. We provide superior heating, cooling, and ventilation products and services to residences and businesses alike. We work in partnership with Lennox Industries to offer you a full line of safe, energy-efficient heating systems.


If your furnace develops cracks in the heat exchanger, carbon monoxide can be a real cause for concern. When the heat exchanger rusts, it becomes brittle. As the system heats up and expands, cracks can easily form in the rusty parts of the metal, where carbon monoxide can leak.

Depending on the seriousness of the damage to the heat exchanger, a heating professional may suggest replacing your unit altogether. This is so not only because of the high cost of replacing a heat exchanger, but mainly because of the threats it brings to your family.

How the Lennox SL280V Variable-Speed, Two-Stage Gas Furnace Will Benefit You

Lower Energy Consumption

A variable-speed furnace does not tend to overwork because it can control its operation to match your heating needs. Since your fan isn’t set at maximum all the time, it uses less power, which results in lower energy bills.

Its dual-fuel capability can be merged with an electric heat pump to create a dual-fuel system that maximizes comfort and fuel efficiency by seamlessly alternating between electric and gas heat, optimizing energy use and minimizing heating costs.

The SL280V has an efficiency rating of up to 80 percent AFUE, which can save you hundreds of dollars in heating costs per year, compared to older, low-efficiency furnaces.

When installed with the user-friendly programmable iComfort Wi-Fi thermostat, the SL280V’s iComfort technology will enable the furnace to swap information and make accurate adjustments to optimize performance and fuel efficiency.

To minimize heat loss and maximize comfort and efficiency, Lennox created a sealed blower compartment for this model.

When matched with a Lennox air conditioner or heat pump, the SL280V can enhance your cooling Seasonal Energy Efficiency Ratio (SEER), which leads to greater energy efficiency and lower energy costs.

To further decrease heat loss, the SL280V has a durable steel cabinet that is elegantly styled with a high-quality paint finish.

Greater Temperature Control

A variable-speed furnace can maintain indoor air temperature with an accuracy that traditional single-speed furnaces can’t match. A conventional furnace pushes a predefined amount of hot air into a room until a certain temperature is met. Then, it shuts off until the temperature decreases again while a variable-speed furnace can effectively circulate enough heated air into a space to keep a specific temperature.

The SL280V has a Duralok Plus heat exchanger, which is constructed from patented ArmorTuf steel that captures waste heat, and a stainless steel secondary heat exchanger that allows the unit to achieve industry-leading efficiency levels. This solid component exceeds industry requirements and extends the furnace’s life.

Its variable-speed motor provides a quiet and consistent flow of air for an ideal balance of temperature and humidity throughout your home, giving your home enhanced comfort.

The SL280V’s ultra-low continuous fan speed provides a quiet, constant flow of air and optimizes indoor air quality devices.

Quieter Operation

Operating your fan at a lower speed when the top speed isn’t necessary means a much quiet overall performance. You wouldn’t hear a constant loud noise that accompanies the blower going on when the temperature has dropped. One innovative benefit of variable-speed operation is that it continuously circulates air. This is also beneficial for you in terms of indoor air quality because the air passes through your furnace filter more often, removing more airborne contaminants.

The SL280V is regarded as the quietest furnace in its price range. With its SilentComfort™ technology that utilizes advanced engineering and special sound-absorbing materials, it is up to 4 times quieter than comparable models.

Ask Four Seasons Air Specialists

If you want more information about this unit, be sure to talk to one of our Dellwood furnace repair and installation experts. We’ll be glad to answer any questions you may have.