The Backburner is a nice choice of flame spewer. It deals critical damage when torching a foe's backside in exchange for a more expensive airblast. It can be obtained in a myriad of ways: unlocking Pyro Milestone 2, uncrating Mann Co Supply Crate #25, uncrating Naughty Winter Crate 2014 (retired), crafting, purchasing from the Mann Co Store, or through random drops.

Now let's talk stats:
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The backburner particles do 6.5 damage to a frontfacing player at medium range. At point blank range, they do 13 damage to a nonburning player. When hit, a player will suffer 3-10 seconds of afterburn damage at 4 damage per tick, depending on how long the victim was roasted. When a player is hit from behind, the Backburner particles do 20-39 damage. On minicrits, the flames do 9-18 damage with a boosted 5 damage per tick of afterburn.

Airblasting costs 50 ammo to use, so on a full tank, up to 4 airblasts can be used. Upon airblasting a burning ally, you will be awarded 20 health.

The Backburner has a reserve tank of 200 fuel, with no reload.

This weapon is a good choice for flankers and sneaky pyros. Why should you (or shouldn't you) use it?

• Awards critical hits from behind enemy lines
  
• Heavies can be killed in mere seconds
  
• Awards a more mobile playstyle

• Airblasts cost 1/4 of total ammo

The Backburner comes in 4 different qualities: Unique, Strange, Vintage, and Collector's. There are two forms of the Backburner:

The first version, obtained by crafting, unboxing, or achievements:

















The second version, the festive one obtained from Naughty Winter Crate 2014: