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| Hothouse Insulation |
|---|
 
| |
| Hothouses and Industrial Hothouses will be warmer (+1 heat level). | |
| Tier 2 | |
| Unlocks | |
| Technologies | |
|---|---|
| Time | |
| Easy | 7 hours |
| Medium | 9 hours |
| Hard | 13 hours |
| Extreme | 15 hours |
| Cost | |
| Prerequisite | Hothouse |
 Wood
|
30 |
 Steel
|
20 |
Hothouse Insulation is one of the Technologies in Frostpunk.