Learn more about heating technologies and industry specific terms.
Advanced Energy (AE) Technology
Quadra-Fire Advanced Energy (AE) technology is a combination of efficient engineering and easy operation.
Automatic Combustion Control (ACC)
Automatic Combustion Control (ACC) is an advanced heat-management system from Quadra-Fire that maintains precision airflow for longer, cleaner and more efficient burns.
Direct Vent Technology
With Direct Vent Technology, your fireplace can use outside air for combustion, expelling 100% of the combustion exhaust and by-products.
Exhaust Sensing Probe (ESP) Technology
Harman pellet stoves utilize an advanced Exhaust Sensing Probe (ESP) system to deliver precision heating control.
Direct vent FireBrick gas fireplaces and inserts provide the warmth and glow of a real wood burning fire without any of the inconvenience.
FireDome technology maximizes wood-heating efficiency and keeps the viewing area clean by directing airflow between the glass and fire.
IntelliFire™ Ignition System
IntelliFire features intermittent-pilot Ignition (IPI) allowing you to conserve fuel and money when the fireplace is not in use.
Quadra-Fire® Four-Point Burn System
Quadra-Fire wood stoves, inserts and fireplaces are famous for the patented “four-point” Quad Burn combustion system.
VertiFlow™ Coal Stoker
The VertiFlow™ Stoker System burns each piece of coal thoroughly and completely—for amazing fire control, maximum heat and impressive burn times.
Wood Stove Technology
Our wood stoves utilize the latest in engineering breakthroughs to maximize performance and efficiency.