The Degreaser is a community-made primary weapon for the Pyro. It is a flamethrower that comprises a gas pump, car muffler, exhaust pipe, a team-colored fire extinguisher and stove top burner. This has a weapon switch 65% faster making it useful for Airblasting a enemy up into the air and using the Reserve Shooter or Flare Gun for extreme damage. This is seen commonly with the Axtinguisher, as the fast weapon switch will allow you to switch weapons almost instantly and land melee critical hits.
The downside is that it is slightly less suitable for direct combat and hit-and-run tactics, as the Afterburn damage does 25% less damage and the flame damage does 10% less than the stock Flamethrower.