The Heater is a mechanic used in UCN and although it is an advantage, it is also a problem as well. Freddy becomes more active, Phantom Freddy appears faster, Lefty becomes increasingly agitated and Jack O' Chica appears when the temperature is high. On the other hand, the Mediocre Melodies (except Happy Frog) can be pushed back by the Heater and Rockstar Freddy will malfunction and eventually skip his Faz-Coin request while the Heater is in use. The hotkey for the Heater is '3'.

Main Mechanics
CutscenesBeginning MinigameBadgesCertificatesCatalog ModeOffice MonitorEndingsFaz RatingsLawsuitPlay TestingSalvage (Mechanic)SponsorsTemperature
Custom Night Mechanics
IntermissionsPower-UpsTabletFreddy MaskFlashlightDoor ControlsDuct SystemMusic BoxAudio LureHeaterNoise MeterDeath CoinMusic SelectionGlobal Music BoxFive Nights with Mr. HugsClockPresetsPower IndicatorTemperatureFaz-CoinsPlushiesShock PanelFigurinesVent MonitorWet Floor SignPower A/CPower GeneratorSil. Ventilation