Editing Cooler

{{infobox main|temperature|

| image = Cooler.png

They are the high-tech upgrade to [[passive cooler]]s, requiring research and power, but not limited to low of {{temperature|17}} and thus capable of refrigerating or freezing food.

==Acquisition==

Constructing a passive cooler requires [[Research#Air_Conditioning|Air Conditioning]] to be researched, which [[Scenario_system#New_Tribe_vs_New_Arrivals|New Arrivals]] start with. It requires {{Required Resources}} and is constructed in {{Ticks|{{P|Work To Make}}}}.

==Summary==

Coolers take the place of a [[wall]] tile. If [[power]]ed, they will cool their front side (shown by a blue tile on placement), and conversely, will heat their back side (red tile). The cooler must not be blocked on either side, and rooms must be enclosed with a mostly complete roof in order to actually be cooled/heated. Coolers will attempt to cool the room to its target temperature, though surrounding heat and the room's size may make this impossible. See the [[temperature]] page for more details.

Coolers have two states of power consumption: low and high. A cooler that is actively cooling a room will consume 200W (high power), regardless of the thermostat setting. Once the goal temperature is reached, the cooler will transition to its low power state where it only uses 20W. If the room's surroundings are warmer, then the room will constantly be heating (and low power mode won't be sustained). If you have multiple coolers in a room, you can exploit this by having each cooler be 1 degree lower than the last - one will actively cool the room, while the others will be in low power state.

Coolers can theoretically cool 1800 degrees, total - 1 tile by 1800 degrees, 50 tiles by 36 degrees - but this is before considering outside temperature. Simple playtesting reveals that with an exterior temperature of {{Temperature|27|38}}, a single cooler can cool a room with a 10x10 exterior to a minimum temperature of {{Temperature|10|16}}. Under these conditions, 2-3 coolers were required to maintain a constant (frozen) {{Temperature|-1|0}} within the same space.

Coolers are often required to create '''freezers'''. Perishable items will spoil if not kept cool. Cold temperatures will slow down spoiling, until the freezing point, a temperature of {{Temperature|0}}, which prevents spoilage completely.  In many warmer [[biomes]], spoilage is a major obstacle in maintaining a food supply, and thus freezer construction is generally considered a high priority.

During a [[heat wave]], or inside harsh [[biome]]s like a ''desert'', coolers are useful to regulate pawn temperature. Too far beyond a pawn's [[Maximum Comfortable Temperature]] will make them vulnerable to [[heat stroke]] and gives the [[Mood#Hot|''Hot'']] negative moodlet. Having a bedroom above {{Temperature|26}} gives colonists the [[Mood#Slept_in_the_heat|''Slept in the heat'']] negative moodlet, regardless of comfortable temperature.

The hot side is rarely useful, but must be accounted for. If a cooler is pointing in a room, it may heat the room to uncomfortable temperatures, making the cooled room more difficult to freeze. It is recommended to point coolers outside of your base. Alternatively, you can point the hot side to a 1x1 room that's unroofed, as unroofed rooms will always have the outside temperature.  

The heating side may be useful when the outdoors temperature is uncomfortably cold, but not freezing - specifically, between {{Temperature|1|16}}. But in practice, if the outdoors temperature often goes above {{Temperature|20}}, you don't want to point it at your colony. Otherwise, the cooler will make your colony unbearably hot when you actually need the freezing.

==Further test results==

* Outdoor temp: {{temperature|46}}

: = Temperature: {{temperature|-3|-2}}

* Outdoor temp: {{temperature|46}}

: = Temperature: {{temperature|-14|-12}}

{{nav|temperature}}