Lennox Gas Furnaces Medford, NY


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Central Air Systemsstarstarstarstarstar4.9 / 5

226 Total Reviews /files//central_air_systems-logo-SM.jpg631-254-4900$22A Industrial Blvd Suite 2, Medford NY


From our home on Industrial Boulevard in Medford, NY, Central Air Systems, Inc. has been providing gas furnace installation and service for both homeowners and businesses for since 1989. We proudly feature Lennox® gas furnaces and we are a Lennox® Premium Dealer™. Since its founding in 1895, Lennox® has been an industry leading company in providing safe, reliable, and efficient indoor comfort.

Winter here on Long Island, NY is perhaps our most demanding season in terms of indoor comfort. Central Air System's's staff of Nate Certified, factory trained, licensed and insured heating technicians have local knowledge to help you choose the features you need and size your system properly to ensure wintertime comfort and efficiency.

Our quiet, energy-efficient furnaces are designed to provide warmth to keep you cozy in winter and to circulate clean, refreshing air from your cooling system in the summer. We offer systems from the industries most efficient, to budget friendly replacement systems.

Lennox Furnaces

Lennox Furnaces


Click the Lennox logo above to explore the furnaces we carry.

SLP99V

Lennox SLP99V Variable-Capacity Gas Furnace

Dave Lennox Signature®

The quietest and most efficient furnace you can buy

  • Efficiency Rating (AFUE): up to 99
  • ENERGY STAR Qualified:
SLP99V

Lennox SLP98V Variable-Capacity Gas Furnace

Dave Lennox Signature®

The quietest and most efficient furnace you can buy

  • Efficiency Rating (AFUE): up to 98.7
  • ENERGY STAR Qualified:
SL297NV

Lennox SL297NV Variable-Speed, Ultra-Low Emissions Gas Furnace

Dave Lennox Signature®

First-in-class, lowest emission furnace on the market

  • Efficiency Rating (AFUE): up to 97.5
  • ENERGY STAR Qualified:

Dave Lennox Signature® Collection

The Dave Lennox Signature® series 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.

SLP99V Gas Furnace with iComfort®S30

  • Our highest efficiency and most advanced furnace with up to 99.0% AFUE for premium energy savings with excellent humidity control and premium comfort
  • Beyond Quiet: The SLP99V gas furnace is the quietest gas furnaces you can buy.
  • Variable speed modulating output operation.
  • The SLP99V has also been designated as one of the Most Efficient ENERGY STAR® certified products in 2020. Products that are recognized as the Most Efficient of ENERGY STAR in 2020 prevent greenhouse gas emissions by meeting rigorous energy efficiency performance levels set by the U.S. Environmental Protection Agency.
  • iComfort®S30 Control: With the Wi-Fi option and optional zoning, your system stays finely tuned to your home by using sensors to react, diagnose, and troubleshoot—all while remaining in constant contact with Central Air Systems technicians to ensure proactive responses. With our Apple or Android App, you'll have remote comfort of your home environment from anywhere in the world.

Other Dave Lennox Signature® Collection Gas Furnaces

  • SLP98V 98.7%: Variable speed gas furnace
  • SL280V 80.0%: Variable speed conventional vented gas furnace: the perfect replacement furnace for quiet comfort.

Lennox® Elite® Series Gas Furnaces

Perfect balance between performance and cost. The Lennox® Elite® Series gas furnaces offer smart electronics, multi-stage capabilities, and variable speed blowers that take indoor comfort and energy-saving performance to new levels.

  • Up to 96% AFUE condensing models or replacement friendly 80% models.
  • Two-stage combustion for improved comfort.
  • Variable speed or constant torque blower motors
Central Air Systems is your local furnace maintenance and installation experts.

Merit® Series Gas Furances

Merit® Series is the introductory product line that raises the bar for heating and cooling equipment.

  • Budget friendly gas furnace series
  • Up to 96% AFUE condensing models or replacement friendly 80% models.
  • Variable speed, Two-stage or single stage combustion.
  • Variable speed or constant torque blower motors
  • All Lennox® Series gas furnaces offer both condensing (90%+ AFUE efficiency), and non condensing 80% AFUE models. Condensing units offer flexible low temperature venting systems and sealed combustion. Conventional 80% models are perfect for retrofit systems and can utilize most existing chimney venting systems.

Have Questions About Your Heating System?

Check out our heating system F.A.Q. to see if your question is answered!

You can always reach out and call or contact us too!
Central Air Systems is here to keep you cool and comfortable.


Heating System F.A.Q.

Central Air Systems is your local furnace maintenance and installation experts.

Lennox Gas Furnace Financing

More comfort options are within your reach with flexible financing options from Lennox and Service Finance Company. Take advantage of your options and get the innovation, efficiency and all-encompassing comfort of Lennox on flexible, friendly terms.

Gas Furnace Rebates and Incentives

Our local natural gas supplier, National Grid, offers attractive rebates for the installation of Lennox 90%+ gas furnaces. They offer natural gas customers up to a $600 rebate to help replace your existing older gas furnace with a new Lennox condensing gas furnace. Save an additional $75 when you add a iComfort®S30 wifi control to your new Lennox Signature gas furnace. Click here for the details.

If you need furnace service, we are here to help. We offer 24 /7 emergency service and our Nate Certified technicians service all gas furnace brands. For more information about our heating repair services click here.

Locally Owned: Central Air Systems, Inc. has been owned and operated since 1989 by Long Island native Steve Signorile.
Nate Certified: Successful NATE training represents real-world working knowledge of HVACR systems and validate the professional competency of service and installation technicians.
Accredited Better Business Bureau Company: We have been BBB Accredited for over 30 years and we have earned an A+ rating from the Better Business Bureau.

Licensed and Insured: We are licensed, certified and insured to operate in Medford, NY and throughout Nassau and Suffolk Counties. We specializing in system design, installation, repair and maintenance of heating and cooling equipment for residential and light commercial customers. We operating with NY license numbers H-16923, RP-2850, and RE-4040.
Lennox® Premium Dealer™. It takes a lot become a Lennox Premier™ Dealer: We are the best of the best.