Hot Water Boilers
Over the last 20 years, a new generation of higher efficiency gas boilers has come to market. An essential difference in the design of these units is how they are vented, eliminating the need for dilution air. The newer designs have been modified to reduce the amount of heated air that escapes during the on and off cycles and by extracting more of the heat contained in the combustion by-products before they are vented.
 
Residential gas boilers for sale in Canada are required to have an annual fuel utilization efficiency (AFUE) rating of at least 80 percent. A boiler's energy efficiency performance over a heating season is called the Annual Fuel Utilization Efficiency (AFUE). This AFUE is expressed as a percentage. The higher the percentage, the more efficient the boiler. ENERGY STAR qualified, high energy efficient boilers have an AFUE of 85 percent or more.
 
Viessmann Vitodens 100
 

Viessmann Vitodens Boiler
  • 95.1% AFUE efficiency
  • Gas-fired wall-mounted condensing boiler
  • Modulating stainless steel cylinder burner
  • Inox-Radial heat exchanger surface
  • Extremely quiet operation; quieter than most refrigerators
  • 2-Year Parts and Labour Warranty
 
Buderus GA124 Gas-Fired Boiler
 
  • Construction consists of flexible GL-180M cast iron
  • The GA124 offers whisper quiet operation
  • It is easily converted for use with propane
  • 1-Year Labour Warranty
  • 5-Year Parts Warranty