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Once again, Lennox redefines innovation with a new addition to the Ultimate Comfort System.

When first introduced in 2013, the Lennox Ultimate Comfort System set the bar higher for an entire industry.  It was comprised of the most capable and most energy-efficient equipment ever created by Lennox, the company known for a focus on innovation in home comfort.

Now, Lennox is raising the bar once again by making its new thermostat, the iComfort S30® Smart Thermostat, the control at the center of the Ultimate Comfort System.  This means you now have an even more advanced system that offers new features for your convenience, and the quality of your home environment.

The iComfort S30 Smart Thermostat adapts to your life.  Perfectly.

As the new hub of the Ultimate Comfort System, the iComfort S30 will regulate temperature and humidity with extreme precision.  But that's just the beginning.

Smarter scheduling that knows when you leave

Regular programmable thermostats can't always save you energy, because they can't adapt to your schedule in real time.  But the iComfort S30's Smart Away Mode actually senses when you and your family are home, and when you're away.

When you leave home, the iComfort S30 lowers your heating and cooling system to a more energy-efficient setting.  Then, using an app on your smartphone that works with your phone's GPS, the iComfort S30 can sense when you're on the way home again, and return system operation to a normal schedule.  So you're always greeted with perfect comfort.

Temperatures that feel just like you set them

Similar to the temperature on a weather report, the Feels Like function uses a combination of humidity and temperature control to make the air feel exactly like the temperature you desire.

Better air quality

Using your home's Wi-Fi connection, the iComfort S30's Allergen Defender monitors air quality levels in your area.  If it detects an air quality alert, it automatically increases airspeed and filtration to compensate.  So you breathe fresher, cleaner air, automatically.

Remote access

Because it's connected to your home's Wi-Fi network, the iComfort S30 can be controlled remotely through the cloud from anywhere in the world.  So you can monitor and adjust your home's environment no matter where you are.

Advanced warnings

Because the iComfort S30 communicates with every other piece of equipment in the system via a data link, it can provide truly proactive monitoring.  So you know about small issues before they become big ones.  This means you can have lasting comfort and peace of mind.

The SLP98V Furnace, the quietest and most efficient furnace you can buy (in 2015).**

The finest in the Lennox furnace line, the SLP98V offers an impressive combination of efficiency and comfort.

Even temperatures and humidity control

Rather than conventional furnace blowers that are all the way on or all the way off, the SLP98V uses a blower than can adjust its airspeed up and down to many different levels.  This lets it start slowly as it circulates for a quieter environment, and to draw out more moisture in the summer for better humidity control.

See Variable-Speed Airflow in Action

Precise, efficient heating

Regular furnaces can operate at one, two or even three levels of heat.  But the SLP98V can adjust its gas valve up and down like a dimmer switch, allowing it to match demand and heat output with extreme precision.  This lets the ENERGY STAR®-qualified SLP98V deliver an AFUE rating of 98.7, meaning almost 99% of the fuel it uses is converted into heat.

See the SLP98V's adjustable heat here:

The XC25 Air Conditioner or XP25 Heat Pump, the most precise and efficient air conditioner and heat pump you can buy.**

For cooling during warm weather and electric heat during cooler weather, the Ultimate Comfort System includes either the XC25 air conditioner or XP25 heat pump.  As the top of the line in their respective categories, each delivers extremely quiet operation and remarkable energy efficiency.

Like the SLP98V furnace, the XC25 and XP25 can adjust their output up and down like a dimmer switch.  So they always deliver the exact amount of cooling or heating you need, without wasting energy.  And working with the sophisticated control of the iComfort S30, the XC25 and XP25 can hold temperatures in your home to within ½ of a degree or less, even during extreme weather.

PureAir Air Purification cleans the air in your home better than any other single system you can buy

The Ultimate Comfort System promises air that is as fresh and clean as it is comfortable, thanks to the whole-home purification of PureAir.  Unlike other air cleaning systems, PureAir combines three different technologies to combat the three main types of impurities in your air.


PureAir removes 99.9% of pollen, mold, dust, pet dander and other particles, and 95% of other particles absorbed by the lungs -- including infectious bacteria and smoke -- down to .3 microns* in size.


Over 90% of biological particles are captured by PureAir, including airborne viruses, flu and cold viruses down to 0.01 micron in size***.

Odors and smoke

Cleaner air will also smell better thanks to PureAir, which can capture approximately 50% of household odors and chemical vapors in a 24-hour period†.

iHarmony® Zoning

The Ultimate Comfort System can regulate temperatures in up to four different areas in your home independently with iHarmony® Zoning. Each area gets its own thermostat, with master control for all four zones provided by the iComfort S30.

See a demonstration of iHarmony Zoning

  • *Based on sound pressure levels during steady-state, high-fire and low-fire operation of Lennox SLP98UH070XV36B and leading competitive units as of July 2013 at mid-point temperature rise and minimum external static pressure when set up per Section 4.4.4 of AHRI 260-2012. Based on AFUE efficiency rating of Lennox SLP98UH090XV60C and leading competitive units listed in AHRI directory as of March 2015. Efficiency ratings established per test standard ANSI/ASHRAE 103-2007.
  • ** Efficiency claim based on comparison of air conditioning and heat pump products' SEER as published in AHRI (January 2015). Actual system combination efficient may vary; consult a Lennox Dealer or AHRI for exact system efficiencies. Precision claim based on the cooling capacity range of the XC/XP25-036 units as compared to equivalent-sized competitive variable capacity compressor units.
  • *** One micron = 1/25,000 of an inch in diameter.
  • Based on laboratory and field studies.

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