Whiteout Survival Furnace Upgrade Requirements

In this guide, I’m sharing key info on upgrading your Furnace in Whiteout Survival, a game I’ve been hooked on for months.

Finding straight-up details on Furnace requirements can be tough, so I’ve put everything I’ve learned in one place to help fellow survivors power up fast.

Why Furnace Levels 1-30 Matter

Raising your Furnace from Level 1 to 30 directly affects your gameplay in multiple ways and is key to your overall success in the game:

• Survivor Happiness: A stronger Furnace means warmer survivors, fewer strikes, and better resource production.
• Game Progression: Each Furnace level lets you build new structures and unlock features that expand your city’s capabilities.
• Resource Management: Better Furnace levels open higher resource-building tiers, bigger intel rewards, and more idle income from exploration chests.

If you’re not at Furnace Level 30 yet, feel free to skip the Fire Crystal info below and jump to the How To Cut Furnace Upgrade Time section.

Fire Crystal Upgrades (FC1 to FC5)

Fire Crystal upgrades (FC1-FC5) open up a whole new set of opportunities:

• Enhanced Power: Each FC level packs a big punch to your total city power and unlocks fresh troop skills.
• Cool New Skins: FC levels add unique skins to each upgradable building, giving your city some extra style.
• Supercharged Troops: Military Camps upgraded with Fire Crystals gain improved troop stats and additional skills.

For example, FC3 introduces extra troop abilities, and FC5 boosts them even more, making your army a real force on the battlefield. Read my full guide to Fire Crystals in Whiteout Survival here.

How To Cut Furnace Upgrade Time

Double Time in the Chief’s House

• Cooldown: 24 hours
• Time Reduced: 20%
• Active Time: 5 minutes

Find this order (Double Time) in the Chief’s House. You can activate it once a day to drop building and upgrade times by 20% for five minutes.

Tip: Use it on major upgrades – like the Furnace – alongside another big building to double-dip on the time reduction.

Hyena’s Skill

• Cooldown: 23-24 hours (depends on Hyena’s level)
• Construction Speed: 10-12% (depends on Hyena’s level)
• Active Time: 5 minutes

Once you hit Furnace Level 18, you can unlock pets. Hyena’s skill can shave off 10–15% of your upgrade times, based on its level.

I have a full guide to pets in the game, make sure to check it out to boost your knowledge!

“Tooling Up” Research

• Cooldown: None
• Construction Speed: Up to +27.80%
• Active Time: Permanent

Maxing “Tooling Up” in your Tech Center can cut construction times by up to 27.80%. If you’re pushing Furnace levels, prioritize this research.

Unlock Zinman

• Cooldown: None
• Construction Speed: Up to +15% (based on skill level)
• Upgrade Cost Reduction: Up to 15% (based on skill level)
• Active Time: Permanent

Zinman is a Mythic Hero with a skill called “Construction Emergency,” which reduces upgrade times by 15%. His “Resourceful” skill also chops 15% off resource costs. Grab Zinman early to save time and materials.

For even more great heroes, check out my guide to the best heroes in Whiteout Survival.

Team Up with an Active Alliance

Join an alliance that focuses on Alliance Tech Research, especially “Adaptive Tools.” This increases everyone’s construction speed. If you’re R4 or R5, make sure to boost that research so your entire crew can level up faster.

Use Speedups

You can snag speedups from daily missions, events, shops, and intel quests. If you play regularly and stick with a solid alliance, you’ll stockpile plenty. Combine all these methods to turbocharge your Furnace upgrades.

Also read: Whiteout Survival Gift Codes

Furnace Upgrade Requirements (Levels 1-30)

Here’s a quick-reference table for each Furnace level. Upgrade times below don’t account for buffs or research bonuses, so your actual times may vary. Remember to use every boost you can before starting a big upgrade.

Furnace Level 1

This is part of the game’s tutorial, so there’s no special resource requirement or separate upgrade time. By completing the initial steps, you reach a max power of 2,000. You’ll also unlock the Cookhouse, Shelter 1, Shelter 2, and Sawmill.

Furnace Level 2

Requires Sawmill Level 1. You’ll spend 180 Wood (no Coal, Iron, or Meat) and wait 6 seconds to finish. Your new max power is 3,800, and you unlock the Hunter’s Hut.

Furnace Level 3

Needs Shelter 1 (Level 2). It costs 805 Wood (no Coal, Iron, or Meat) and takes 1 minute to complete. Your max power climbs to 6,500, and you unlock the Coal Mine.

Furnace Level 4

Requires Coal Mine (Level 3). You’ll spend 1,800 Wood and 360 Coal (no Iron or Meat). It takes 3 minutes, boosting your max power to 10,100. You also unlock another Hunter’s Hut.

Furnace Level 5

Needs a Hero Hall plus Shelter 3 (Level 3). It costs 7,600 Wood and 1,500 Coal (no Iron or Meat) and takes 10 minutes. Your max power goes up to 15,500, and you unlock Shelter 4 plus the Iron Mine.

Furnace Level 6

Requires Iron Mine (Level 5). You’ll need 19,000 Wood, 3,800 Coal, and 960 Iron (no Meat). The upgrade time is 30 minutes, raising your max power to 23,600. You also unlock Shelter 3, Clinic, Explorer’s Cabin, and Hero Hall upgrades.

Furnace Level 7

Needs Shelter 5 and the Chief’s House. This costs 69,000 Wood, 13,000 Coal, and 3,400 Iron (no Meat). You’ll wait 1 hour, ending up with 35,300 max power. It unlocks Shelter 6, the Lighthouse, the Infantry Camp, and Barricade.

Furnace Level 8

Requires Infantry Camp (Level 7). It costs 120,000 Wood, 25,000 Coal, and 6,300 Iron (no Meat). You’ll spend 2 hours 30 minutes upgrading. This pushes max power to 47,000 and unlocks the Embassy, Arena, Marksmen Camp, and Infirmary.

Furnace Level 9

Needs Embassy (Level 8) and Infirmary (Level 1). It’ll run you 260,000 Wood, 52,000 Coal, and 13,000 Iron (no Meat) over 4 hours 30 minutes. Your new max power is 58,700, and it unlocks the Storehouse, Research Center, and Lancer Camp.

Furnace Level 10

Requires Marksman Camp (Level 9) and the Research Center. The cost is 460,000 Wood, 92,000 Coal, and 23,000 Iron (no Meat) with a 6-hour wait. You’ll get 75,700 max power and unlock Shelter 7, Shelter 8, and the Command Center.

Furnace Level 11

Needs Embassy (Level 10) and Lancer Camp (Level 10). It’s 1.3M Wood, 260k Coal, 65k Iron, and 1.3M Meat over 7 hours 30 minutes. Your max power moves to 92,700, and you unlock the Enlistment Office plus access to Tier 4 Troops.

Furnace Level 12

Requires Embassy (Level 11) and Command Center (Level 1). It costs 1.6M Wood, 330k Coal, 84k Iron, and 1.6M Meat in 9 hours. That boosts your max power to 109,700. No new buildings unlock here, but you’ll get closer to advanced troops.

Furnace Level 13

Needs Embassy (Level 12) and Infantry Camp (Level 12). You’ll spend 2.3M Wood, 470k Coal, 110k Iron, and 2.3M Meat over 11 hours. Your max power increases to 138,400, and you unlock the Drill Camp plus Tier 5 Troops.

Furnace Level 14

Requires Embassy (Level 13) and Marksman Camp (Level 13). It’ll run 3.1M Wood, 630k Coal, 150k Iron, and 3.1M Meat with a 14-hour upgrade time. Your new max power is 167,100. No big building unlocks, but this sets you up for further gains.

Furnace Level 15

Needs Embassy (Level 14) and Lancer Camp (Level 14). This calls for 4.6M Wood, 930k Coal, 230k Iron, and 4.6M Meat over 18 hours. You’ll end up with 195,800 max power and unlock Hero Gear features.

Furnace Level 16

Requires Embassy (Level 15) and Research Center (Level 15). It costs 5.9M Wood, 1.1M Coal, 290k Iron, and 5.9M Meat, taking 1 day 6 hours 28 minutes. Your max power jumps to 236,200, and you can train Tier 6 Troops.

Furnace Level 17

Needs Embassy (Level 16) and Infantry Camp (Level 16). You’ll drop 9.3M Wood, 1.8M Coal, 480k Iron, and 9.3M Meat over 1 day 12 hours 34 minutes. This upgrades you to 276,600 max power without new building unlocks.

Furnace Level 18

Requires Embassy (Level 17) and Marksman Camp (Level 17). It uses 12M Wood, 2.5M Coal, 620k Iron, and 12M Meat in 1 day 19 hours 53 minutes. Your power climbs to 317,000, and you unlock the Beast Cage (Pets).

Furnace Level 19

Needs Embassy (Level 18) and Lancer Camp (Level 18). It calls for 15M Wood, 3.1M Coal, 780k Iron, and 15M Meat over 2 days 17 hours 50 minutes. Your max power goes up to 374,400, and you get Tier 7 Troops.

Furnace Level 20

Requires Embassy (Level 19) and Research Center (Level 19). You’ll spend 21M Wood, 4.3M Coal, 1M Iron, and 21M Meat in 3 days 10 hours 18 minutes. That sets your power to 431,800 and unlocks Mastery Forging.

Furnace Level 21

Needs Embassy (Level 20) and Infantry Camp (Level 20). It costs 27M Wood, 5.4M Coal, 1.3M Iron, and 27M Meat over 4 days 10 hours 59 minutes. You’ll jump to 489,200 max power. No direct unlocks here, but you’re on track for more advanced troops.

Furnace Level 22

Requires Embassy (Level 21) and Marksman Camp (Level 21). You’ll need 36M Wood, 7.2M Coal, 1.8M Iron, and 36M Meat for 6 days 16 hours 29 minutes. Your new power is 575,300, with Chief Gear and Tier 8 Troops unlocked.

Furnace Level 23

Needs Embassy (Level 22) and Lancer Camp (Level 22). This runs 44M Wood, 8.9M Coal, 2.2M Iron, and 44M Meat in 9 days 8 hours 40 minutes. It pushes your power to 661,400. No fresh building unlocks at this level, but your city gains more overall strength.

Furnace Level 24

Requires Embassy (Level 23) and Research Center (Level 23). It takes 60M Wood, 12M Coal, 3M Iron, and 60M Meat over 13 days 2 hours 33 minutes. Your max power hits 747,500 with no new structures unlocked.

Furnace Level 25

Needs Embassy (Level 24) and Infantry Camp (Level 24). You’ll drop 81M Wood, 16M Coal, 4M Iron, and 81M Meat during 18 days 8 hours 22 minutes. Your power reaches 833,600, and you get Chief Gear Charms.

Furnace Level 26

Requires Embassy (Level 25) and Marksmen Camp (Level 25). This costs 100M Wood, 21M Coal, 5.2M Iron, and 100M Meat over 21 days 2 hours 26 minutes. You’ll climb to 960,100 max power and unlock Tier 9 Troops.

Furnace Level 27

Needs Embassy (Level 26) and Lancer Camp (Level 26). It calls for 140M Wood, 24M Coal, 7.4M Iron, and 140M Meat in 25 days 7 hours 43 minutes. Your new power is 1,086,600, but no specific building unlocks here.

Furnace Level 28

Requires Embassy (Level 27) and Research Center (Level 27). This one costs 190M Wood, 39M Coal, 9.9M Iron, and 190M Meat over 29 days 2 hours 52 minutes. Your power moves up to 1,213,100, and you’re nearing the final tiers.

Furnace Level 29

Needs Embassy (Level 28) and Infantry Camp (Level 28). It uses 240M Wood, 49M Coal, 12M Iron, and 240M Meat in 33 days 11 hours 42 minutes. That raises your power to 1,339,600, one step short of the big final upgrade.

Furnace Level 30

Requires Embassy (Level 29) and Marksman Camp (Level 29). This major jump takes 300M Wood, 60M Coal, 15M Iron, and 300M Meat over 40 days 4 hours. Reaching it boosts power to 1,523,500 and unlocks Tier 10 Troops plus Fire Crystal Upgrades.

Also read: Whiteout Survival Essence Stone Guide

Fire Crystal Upgrade Requirements (FC1-FC5)

Below is a table for Fire Crystal (FC) upgrades. Times and resources don’t include any buffs (Zinman’s skills, research perks, etc.), so you may see differences in your game.

Fire Crystal Level 1 (FC1)

To reach FC1, you must have an Embassy Level 30 and Research Center Level 30. It requires 67M Wood, 13M Coal, 3.3M Iron, 67M Meat, and 132 Fire Crystals, with an upgrade time of 7 days. Your max power increases to 1,810,500. This unlocks a new Furnace skin along with FC upgrades for the Embassy and Infirmary (FC Lv. 1), among others.

Fire Crystal Level 2 (FC2)

Once you have Embassy FC Level 1 and Lancer Camp FC Level 1, you can upgrade to FC2. The cost is 72M Wood, 14M Coal, 3.6M Iron, 72M Meat, and 158 Fire Crystals. It takes 9 days to complete, boosting your max power to 2,097,500. You also unlock FC2 skins for the Furnace, Embassy, and Infirmary.

Fire Crystal Level 3 (FC3)

To get FC3, you need Embassy FC Level 2 and Infantry Camp FC Level 2. It requires 79M Wood, 15M Coal, 3.9M Iron, 79M Meat, and 238 Fire Crystals, taking 11 days to finish. Your max power jumps to 2,384,500, and you unlock FC3 skins for the Furnace, Embassy, Infirmary, and more.

Fire Crystal Level 4 (FC4)

For FC4, you must have Embassy FC Level 3 and Marksman Camp FC Level 3. This upgrade calls for 82M Wood, 16M Coal, 4.1M Iron, 82M Meat, and 280 Fire Crystals. It takes 12 days, raising your max power to 2,700,500. You’ll also gain new FC4 skins for buildings like the Furnace, Embassy, and Infirmary.

Fire Crystal Level 5 (FC5)

Finally, FC5 requires Embassy FC Level 4 and Lancer Camp FC Level 4. It consumes 84M Wood, 16M Coal, 4.2M Iron, 84M Meat, and 335 Fire Crystals, with a 14-day timer. Your max power climbs to 3,016,500, and you unlock the final tier of FC skins for the Furnace, Embassy, Infirmary, and other buildings.

Also read: List of ALL Heroes and How to Unlock Them

Extra Tips for Furnace Upgrades

Upgrading the Furnace shapes your entire strategy. Here are a few more pointers:

Plan Your Resources: Each Furnace level demands a ton of materials. Keep an eye on upcoming requirements so you can gather everything in advance.

Balance Your Builds: Don’t focus on the Furnace alone. Remember to keep other vital buildings and troops growing, too.

Use Boosts and Bonuses: Events or special state bonuses can reduce upgrade times or costs. Plan your builds during these windows for maximum benefit.

Prioritize Key Levels: Certain levels unlock major features, like the Beast Cage at Level 18. Push these levels first for strategic advantages over rivals.

Check Each Level’s Perks: Every upgrade has unique unlocks. Knowing what’s ahead helps you pick upgrades that match your playstyle.

Think Long-Term: Some upgrades may look underwhelming right now but pay off big later. Stay patient and keep your eyes on future goals.For instance, some Furnace Level 30 players might seem weak at first because they haven’t built out everything else. Once they focus on T10 troops and supporting buildings, their power skyrockets.

Track Your Power: Watch how each upgrade boosts your total power. This is a great way to see if you’re ready for harder challenges or PvP.

Watch for Building Events: Sometimes the game hosts events that reward you for upgrading buildings or training troops within a specific timeframe. Align your Furnace upgrades with these events to score extra resources, speedups, and other freebies.

Final Thoughts

Leveling up your Furnace in Whiteout Survival has a huge impact on your city’s success. Use these tips to crank up your Furnace levels more efficiently.

Always remember to stack every buff and bonus you can before starting a long upgrade – every minute and resource counts.

And if you want to make sure you get the most out of the game, check out my Whiteout Survival guide hub here.