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Lennox SL280V: A Variable Speed Gas Furnace

Lennox SL280V A variable speed Gas Furnace by Kettle Moraine Heating & Air Condtioning

If your existing furnace is at least 15 years old, it no longer has the capacity and the efficiency to provide what your home needs in terms of providing consistent and comfortable temperatures.

That’s because old heating systems tend to lose their efficiency due to depleted performance. This results in higher utility bills and repeated visits from HVAC technicians for furnace repair.

Kettle Moraine Heating and Air Conditioning is a foremost heating company in Delafield, WI that provides its customers with the best HVAC products and services. Our clients’ comfort is of utmost importance to us. For this reason, we collaborated with Lennox Industries to offer you some of the industry’s most innovative furnaces.

This article highlights the Lennox SL280V Variable Speed Gas Furnace, which Lennox regards as the quietest furnace in its class.


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.

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.

In comparison with other competitive models, the SL280V is deemed as the quietest furnace in its class. Thanks to its SilentComfort™ technology that integrates advanced engineering with sound-absorbing insulation to deliver the best in quiet, consistent heating.

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

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.

Energy Efficiency

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.

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.


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.

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

Quiet Operation

The SL280V is viewed 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 the Experts in Heating

During winter, your furnace is the main appliance that takes care of your family’s heating needs. You need a unit that is capable enough to keep your home as warm and comfortable as possible.

The SL280 is one of the finest furnaces in its category, giving you a unique fusion of fuel efficiency and unmatched reliability.

Kettle Moraine Heating and Air Conditioning has the knowledge and experience in setting up and maintaining this great furnace model. We want to help you attain your preferred level of comfort without compromising efficiency.

Our technicians are factory-trained, NATE-certified and are among the most outstanding heating professionals in the Southeastern Wisconsin area. They are keen in detail of every system they install and service, regardless if you have a high-efficiency furnace or a conventional heating system.

Our team members are skilled and experienced in handling all makes and models of HVAC systems. We know our craft full well as well as the products we offer.

Call us for your Oconomowoc furnace repair and other heating and cooling needs.

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