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Lennox

Explore Our Library of Lennox Furnaces & Air Conditioners

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Lennox

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Lennox Gas Furnaces

Lennox® furnaces are some of the most efficient and quietest heating systems you can buy*. They’re engineered for perfect warmth and savings.

SLP99V Variable-Capacity Gas Furnace

Not only is the SLP99V gas furnace part of the Dave Lennox Signature® Collection, it’s part of the Ultimate Comfort System™. Which combines the best of everything Lennox has to offer to create an unprecedented whole-home comfort system that seamlessly and intelligently works together to stay finely tuned to your home and deliver consistently clean, perfect air.

The Quietest And Most Efficient Furnace You Can Buy

Energy Efficiency Up to 99% AFUE
ENERGY STAR® Certified Yes
Stages of Heating Modulating
Quiet Operation SilentComfort™ Technology and Fully Insulated Cabinet
Motor Variable Speed
Enhanced Humidity Control Yes
Air Filter and Humidifier Compatible Yes
Dual-Fuel Capable Yes
Parts Warranty limited Lifetime Warranty on Heat Exchanger. 10-Year Limited Warranty on covered components.
Heat Exchanger Warranty Limited Lifetime Warranty on Heat Exchanger.
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EL297V High-Efficiency, Variable Speed, Two-Stage Gas Furnace

Variable-speed airflow means consistent comfort. The EL296V can adjust its airflow speed, allowing it to gently disperse even heat throughout your home. Variable-speed airflow also prevents blasts of air when the system starts.

High-Efficiency, Variable-Speed Gas Furnace

Energy Efficiency Up to 97% AFUE
ENERGY STAR® Certified Yes
Stages of Heating Two-Stage
Quiet Operation Fully Insulated Cabinet
Motor Variable Speed
Enhanced Humidity Control Yes
Air Filter and Humidifier Compatible Yes
Dual-Fuel Capable Yes
Parts Warranty 5-Year Limited Warranty on covered components. This product may be eligible for valuable 10-Year Limited Extended Warranty coverage with product registration.
Heat Exchanger Warranty Limited Lifetime Warranty on Heat Exchanger.
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SL280V Variable-Speed, Two-Stage Gas Furnace

A variable-speed blower maintains comfort with an adjustable flow of air, preventing temperature swings and blasts of air when your system starts. While most furnaces are either off or on, the SL280V can actually deliver two different levels of heat based on how cold it is outside. This lets it fine-tune fuel use to carefully match your comfort, keeping your home warm and energy-smart.

The Quietest Furnace in its Class

Energy Efficiency Up to 80% AFUE
ENERGY STAR® Certified Yes
Stages of Heating Two-Stage
Quiet Operation SilentComfort™ Technology and Sound Absorbing Insulation
Motor Variable Speed
Enhanced Humidity Control Yes
Air Filter and Humidifier Compatible Yes
Dual-Fuel Capable Yes
Parts Warranty 10-Year Limited Warranty on covered components
Heat Exchanger Warranty 20-Year Limited Warranty
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Lennox SL25KCV Air Conditioner

Offering the highest level of performance on the market, the Dave Lennox Signature® Collection SL25KCV air conditioner delivers the ultimate in consistently perfect air for your home. No other air conditioner comes close to its near 26.00 SEER2 level of efficiency. From its innovative cabinet design that increases durability, to its digital communication features that maximize accurate control, it is without question the most precise and efficient air conditioner you can buy.

The Most Precise And Efficient Air Conditioner Available

Energy Efficiency Up to 25.10 SEER
Stages of Cooling Variable-capacity
Sound Rating As low as 58 dB
ENERGY STAR® Certified Yes
Environmentally Responsible Refrigerant R-454B
Compressor/Parts Warranty 10-Year Limited Warranty on covered components including compressor
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Lennox EL18KCV Air Conditioner

With efficiencies of up to 19.50 SEER2, the EL18KCV can deliver significant energy savings. In fact, it can help cut your energy bills and may even help you qualify for energy rebates.

Mid-Efficiency, Digital-Ready, Variable-Capacity Air Conditioner

Energy Efficiency Up to 19.50 SEER2
Stages of Cooling Two-Stage
Sound Rating As low as 67 dB
ENERGY STAR® Certified Yes
Environmentally Responsible R-454B Refrigerant
Compressor/Parts Warranty 10-Year Limited Warranty on compressor, 5-Year Limited Warranty on covered components.
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EL22KCV Air Conditioner

When paired with digital equipment, the EL22KCV maximizes its efficiency with modern communication features to allow for more precise control of temperature and humidity. With an innovative cabinet design that increases durability, this 2025 Compliant Refrigerant air conditioner offers class-leading comfort, quiet and energy savings for your home.

High-Efficiency, Digital-Ready, Variable-Capacity Air Conditioner Compatible With 2025 Compliant Refrigerant

Energy Efficiency Up to 22.5 SEER
Stages of Cooling Variable-capacity operation
Sound Rating As low as 60 dB
ENERGY STAR® Certified Yes
Environmentally Responsible R-454B Refrigerant
Compressor/Parts Warranty 10-Year Limited Warranty on compressor, 5-Year Limited Warranty on covered components.
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MWZD Wall Mount Mini-Split Air Handler

Wall mount mini-split air handler for multi-zone, high-efficiency systems.

Our exclusive technology disperses air through micro holes to produce a gentle flow and avoid uncomfortable blasts of air, maintaining the optimal temperature in your home while reducing energy use. This unit is equipped with a motion detection sensor that recognizes when you aren't in the space and automatically implements efficiency measures to reduce energy use.

Product Specifications:

Wireless Remote Control
Zones Single-zone
Warranty 5-year warranty on covered components

Explore Our Library of Lennox Furnaces & Air Conditioners

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What To Expect

Discover the Southside Heating & Air Conditioning Difference

Family Owned and Operated

45+ Years in business

certified and trusted technicians

fast, reliable service

Affordable financing options

transparent pricing

Family Owned and Operated

45+ Years in business

certified and trusted technicians

fast, reliable service

Affordable financing options

transparent pricing

father and 2 children playing on scooter and bike in doorway of their home smiling
father and 2 children playing on scooter and bike in doorway of their home smiling
Our Reviews

See What Your Neighbors Are Saying

I am very happy with the service I obtain from Southside Heating & Air. If I need a tech onsite. The tech is always courteous and provides me with the info needed to resolve the issue promptly.

David S.

David S.

Very professional technicians, knowledgeable, quick to figuring out and fixing my problem. Called me back right away the next morning after I left a message the night before when they were closed. Plus they have the best customer service.

Scott O.

Scott O.

Great experience with Southside Heating and AC. Very much enjoyed working with Mark. They were on time and completed the work the same day for new furnace and AC. No surprises with quoted price to actual. Thanks.

Mike O.

Mike O.

Donald Siefert helped me with the filter in my air conditioner. I had bought a new one a couple months ago and had finally tried to replace it by myself, I didn’t know if I put it in right so I gave Southdside a call and…

Julia S.

Julia S.

Extremely satisfied with Southside. After we were rescheduled/delayed/no-call-no-showed three times by the company that installed HVAC for my new build business, Southside came out to help within HOURS. Super professional, did a very thorough job, showed up exactly when they said they would and made sure…

Rachel J.

Rachel J.

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