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Heater Efficiency Upgrade |
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Heaters will burn less Coal (-1 coal per Heater). | |
Tier 3 | |
Time | |
Easy | 8 hours |
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Medium | 10 hours |
Hard | 14 hours |
Extreme | 16 hours |
Cost | |
Prerequisite | Improved Heaters |
Wood | 60 |
Steel | 40 |
Heater Efficiency Upgrade is one of the Technologies in Frostpunk.