Some of the Best Gas Furnaces You Can Buy in Manassas

Innovative Dave Lennox Signature® Collection gas furnaces are some of the best you can find. They’re also some of the quietest operating systems you can buy and offer efficient heating for your Manassas area home.

Our Dave Lennox Signature Collection gas furnaces feature variable speed motors, which help produce more comfort than older single speed furnaces. With a variable speed furnace, blower fans start up slowly and only operate at their highest speed when extreme heat is demanded. These furnaces may save your family hundreds on utility expenses.

Learn about each of our Dave Lennox Signature Collection furnaces and features here. When you’re ready to move forward with your gas furnace replacement, give Twin Air LLC in Manassas a call at 703-754-1062 or make an appointment online.

SLP98V Variable-Capacity Gas Furnace

If you want a highly energy efficient heating system, the SLP98V is the gas furnace for you. With a 98.7% annual fuel utilization efficiency (AFUE) rating*, you’ll see significant energy savings. The SLP98V is also ENERGY STAR® qualified, meaning it has met or exceeds EPA standards for energy efficient operation. The SLP98V gas furnace is ideal for homes in Manassas for its variety of additional features, such as:

  • Efficiency rating of up to 98.7% AFUE*can save you money on your utility expenses
  • Variable-capacity operation works much like the cruise control system of high-performance automobiles, making changes automatically to achieve maximum fuel efficiency
  • 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
  • PreciseComfort technology provides outstanding temperature control
  • SilentComfort technology allows the system to run quietly
  • SureLight® ignitor for an efficient performance
  • Insulated blower compartment to keep air in and minimize heat loss
  • Limited Lifetime Warranty on heat exchanger
  • 10-Year Limited Warranty on covered components
SLP98V Variable-Capacity Gas Furnace
Efficiency Rating (SEER): up to 98.7
Price Guide: $$$Energy Star badge

SL280V Variable Speed Gas Furnace

One of our best options is an SL280V gas furnace if you’re in Manassas. This two-stage heating system achieved an 80% AFUE energy efficiency rating, which may help reduce your utility expenses. It also includes SilentComfort™ technology to generate heat very quietly. With the SL280V, you’ll enjoy cozy and reliable warmth. Other great features include:

  • Efficiency rating of 80% AFUE*
  • iComfort®-enabled technology—allows the furnace, when installed with the easy-to-use programmable iComfort Wi-Fi® thermostat, to produce even better efficiency and performance
  • SureLight® ignition for an efficient performance
  • Insulated blower compartment traps heat inside so your system doesn’t have to work as hard to keep the air warm
  • 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

Need help with a gas furnace repair or want to set up a gas furnace maintenance visit? We can handle it all. Our staff in Manassas is trained, experienced and ready to help. Schedule an appointment or call 703-754-1062 now.


* 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.