Enjoy Cozy, Quiet, Efficient Heat for Years to Come with a Gas-Fired Boiler.

Gas-fired water boilers provided comfortable, even heat almost silently. What’s more is their high-level energy efficiency. At Woody's Sudden Service Inc in Manassas Park, many of the Lennox® gas-fired water boilers we offer are ENERGY STAR® qualified.

Read more about the details of our high-efficiency boilers.

GWM-IE Boiler

This gas-modulating condensing water boiler is ENERGY STAR® qualified and 40% more efficient than conventional boilers. As a matter of fact, it earned a 95% AFUE rating.* To get the most fuel savings, it features an electronic ignition control that turns on the burner to match your household demand to ensure it uses only the energy it needs to keep your family warm.

  • Reliable, self-cleaning, stainless steel heat exchanger converts waste energy into usable heat
  • Sealed combustion reduces noise
  • By allowing the burner to fire as low at 20% of its capacity, it’s modulating capability perfectly meets your comfort needs
  • Stainless steel mesh burner fights corrosion and oxidation
  • CPVC flue condensate collector is corrosion-resistant and eliminates the use of metal in the venting area.
  • 15-year limited warranty on heat exchanger, 10-year limited warranty on remaining covered components
GWM-IE Boiler
Efficiency Rating (AFUE): up to 95
Energy Star badge

GWB9-IH Boiler

The GWB9-IH boiler integrates easily with a traditional radiator system and is ENERGY STAR qualified with an AFUE rating of 90%.* Its cast-aluminum heat exchanger transfers heat quickly—as much as three times faster than a conventional cast-iron exchanger.

  • Dependable, heavy-gauge steel cabinet with baked-on paint finish
  • Condensed design for flexible installation options
  • Sealed combustion keeps noise at a minimum
  • Electronic ignition monitors water temperature and turns on the burner only when necessary
  • Burns natural gas or can be converted to LP gas
  • 15-year limited warranty on heat exchanger, 10-year limited warranty on remaining covered components
GWB9-IH Boiler
Efficiency Rating (AFUE): up to 90
Energy Star badge

GWB8-IE Boiler

With an 84.4% efficiency rating,* the GWB8-IE boiler is significantly more efficient than an older boiler—it even works with older radiator systems.

  • Electronic ignition oversees water temperature and ignites the burner only when needed
  • Thick fiberglass insulation significantly reduces off-cycle heat and energy loss
  • Cast-iron heat exchanger and titanium burners engineered for years of durability
  • Available in six different sizes for ultimate installation flexibility
  • Burns natural gas or can convert to LP gas
  • 20-year limited warranty on heat exchanger, 1-year limited warranty on remaining covered parts
GWB8-IE Boiler
Efficiency Rating (AFUE): up to 84.4

GWB8-E Boiler

With its durable cast-iron heat exchanger and long-lasting stainless steel burners, this standard-efficiency boiler can perform for years.

  • Electronic ignition oversees water temperature and ignites the burner only when needed
  • Thick fiberglass insulation significantly reduces off-cycle heat and energy loss
  • Works with traditional radiator systems
  • Offered in nine different sizes for installation anywhere in your home
  • Burns natural gas or can convert to LP gas
  • 20-year limited warranty on heat exchanger, 1-year limited warranty on remaining covered parts
GWB8-E Boiler
Efficiency Rating (AFUE): up to 83.9

Give us a call at 703-369-5528 or schedule an appointment online so our experts at Woody's Sudden Service Inc in Manassas Park can help you find the right boiler for you, or get your current boiler working as well as it should be.