Fireplace

Fireplaces are Build Mode objects found in The Sims, The Sims 2 and The Sims 3.

The Sims & The Sims 2
In The Sims and The Sims 2, they raise the Room/Environment score. In The Sims 3, they give the cozy fire moodlet. However, they can cause fires if flammable objects - or Sims - are too close to them.

Fireplaces need to be placed along walls, and some fireplaces have mantels, which can hold small objects. Putting anything in front of them, or leaving them lit for extended periods of time, may increase the risk of starting a fire.

The Sims 3
In The Sims 3, cheap fireplaces can be upgraded to become fireproof or change their fire color, while the expensive types are purchased fully upgraded. Daredevil Sims can 'play with fire', which almost always sets the Sim on fire. Mummies fear fire because are very flammable, they will get the "scared" moodlet in a fire is lit in the same room as them, and they autonomously try to put fires out. Fires can cause a variety of moodlets:

Combustion Junction
The best revenge is living well, and the best way to live well is with a Combustion Junction fireplace. Its ventilated interior stimulates flames and taps into their natural ability to provide both light and heat.

The Combustion Junction is a free-standing fireplace with an environment score of 10.

Pyro-Pit
New advances in fire technology have led to the Pyro-Pit, the next evolutionary step in home fireplaces. Its Micro-Inferno vortex can reach near-supernova temperatures, which comes in handy during those cold winter nights.

The Pyro-Pit is an embedded fireplace with an environment score of 12.