From Blichmann:

In 2009, Blichmann lit the brewing world on fire with our TopTier™ burner, the first made just for home brewing. But never resting, our team of engineers and avid homebrewers reinvented what a burner should be: efficient, fast, and versatile. That new burner was appropriately named the HellFire™.

Waiting for a boil is now a thing of the past. This dual-mode, patent-pending propane burner has twice the power of our previous burner and is unlike anything else on the market. Whether you want efficiency or ultra-blazing heat, this burner is right for you. Plus, with our patent-pending heat shield, you can keep all that extra heat away from your valve and thermometer and channel it directly into your wort.

Key features include:

• High-efficiency mode of 80,000 BTU/hr
• High-power mode of 140,000 BTU/hr
• Simple operation
• Quiet and efficient heat transfer
• Fume-free, heavy-gauge, non-rusting stainless steel frame
• Patent-pending clip-on heat shield
• Infinitely adjustable kettle retaining bars compatible with kettles up to 19.75" in diameter or 25" with HellFire™ XL Burner
• Excellent outdoor flame stability (not suitable for indoor use)