Some of the Best Gas Furnaces You Can Buy in McHenry

If you’re in need of a gas furnace replacement in McHenry, our Dave Lennox Signature Collection gas furnaces are all great options. These models are two of the quietest gas furnaces you can find and are highly energy efficient.

Let’s start with energy efficiency. Our Dave Lennox Signature Collection gas furnaces are built with variable speed motors, which limit energy use by only working fans at full speed when extreme heat is required. Variable speed motors use two-thirds less energy than single speed motors and could help you save big on your annual utility bills compared to older furnaces.

More details for each Dave Lennox Signature Collection gas furnace model are explained below. If you want to talk with a Jett's Heating & Air Inc. professional about one of our products in McHenry, call 815-410-1128 or schedule an appointment online.

SLP98V Variable-Capacity Gas Furnace

You’ll enjoy the high efficiency of this gas furnace. It’s earned the ENERGY STAR® label for meeting EPA efficiency standards, and it has an annual fuel utilization efficiency (AFUE) rating* of 98.2%. These two efficiency ratings will help you receive lower utility bills every year. Discover the SLP98V’s other great features, including:

  • Efficiency rating of up to 98.2% AFUE*—helps reduce your utility expenses
  • ENERGY STAR® qualified—meets or exceeds EPA guidelines for energy efficiency
  • Variable-capacity operation works much like the cruise control system of high-performance automobiles, automatically making adjustments as necessary to achieve maximum fuel efficiency
  • iComfort®-enabled technology—helps the furnace, when installed with the easy-to-use programmable iComfort Wi-Fi® thermostat, to generate even better performance and efficiency
  • PreciseComfort™ technology provides great temperature control
  • SilentComfort technology for some of the quietest operation you can find
  • SureLight® ignitor for an efficient performance
  • Insulated blower compartment to keep air in and reduce heat loss
  • 10-Year Limited Warranty on parts and controls
  • Limited Lifetime Warranty on heat exchanger
SLP98V Variable-Capacity Gas Furnace
Efficiency Rating (SEER): up to 98.7
Price Guide: $$$Energy Star badge

SL280V Variable Speed Gas Furnace

If you’re in need of a new furnace and located in McHenry, the SL280V gas furnace may be the one for you. It has received an AFUE* efficiency rating of 80% and uses two-stage heating to enhance energy efficiency. Plus, with SilentComfort™ technology, this system runs up to 4.5 times quieter than competing models** so you’ll be able to relax in the peaceful warmth of your home more easily. Don’t forget about the other wonderful features of this model, including:

  • Efficiency rating of 80% AFUE*
  • iComfort®-enabled technology—allows the furnace, when installed with the easy-to-use programmable iComfort Wi-Fi® thermostat, to provide even better performance and efficiency
  • SureLight® ignition for an efficient performance
  • Insulated blower compartment traps warm air so your system doesn’t have to work as hard
  • 10-Year Limited Warranty on covered components
  • 20-Year Limited Warranty on heat exchanger
SL280V Variable Speed Gas Furnace
Efficiency Rating (SEER): up to 80
Price Guide: $$$Energy Star badge

Jett's Heating & Air Inc. in McHenry is ready to help with any of your gas furnace replacement, repair or maintenance needs. Call 815-410-1128 or use our online scheduler to make your appointment.


* Annual Fuel Utilization Efficiency (AFUE) measures how efficient the appliance is in converting its fuel’s energy into heat over the course of a year.