The Lennox SL280V is a variable-speed gas furnace with a heating efficiency of 80% AFUE. The variable-speed motor operates mostly on low on mild days, resulting in energy savings and more consistent temperatures. The variable-speed technology is also designed to deliver greater humidity control. A sealed blower compartment increases efficiency and combines with sound-absorbing materials to provide quiet operation. A steel Duralok heat exchanger and silicone nitride SureLight igniter are designed for durability and long life. The SL280V can be paired with a matching Lennox air conditioner or heat pump to improve the system’s SEER. The SL280V is part of the Dave Lennox Signature Collection.
We purchased Dave lennox sl280v furnace six weeks ago to go with the Lennox 13acx air condition that we bought last summer.We did not know that the blower motor -which is part of the new furnace -will be the blower motor for my air condition as well. Our new ac used to be very quiet until the furnace got installed. Now my ac is incredibly loud because it is utilizing the furnace motor to blow the air. It is a nightmare! The ac is so very loud, with a straining surging noise, but the furnace is running quietly. When we installed the ac last year it was very quiet because it was using the blower motor of my old furnace. We bought new Lennox products because we were pleased with our previous old furnace and ac The new Lennox models are not quiet as the ones we had before for 16 years . We still do not know how we are going to deal with this problem.
Most questions about the SL280V on HVAC forums are about thermostat and wiring set-up issues. A consumer on hvac-talk.com had a problem with the fan hitting the housing gasket as it rotated on his new unit, which the installer repaired.
The warranty for the Lennox SL280V furnace is comprised of the following:
20-year limited warranty on the heat exchanger
10-year limited warranty on covered components
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