Clash Royale Furnace Guide

Type	Level/Tier	Objective	Reward
Spawner	1	Spawn a total of 660 Troops	100 Furnace Cards 50
	2	Spawn a total of 1,950 Troops	4,000 50
	3	Spawn a total of 3,250 Troops	150 50
Damage Dealer	1	Deal a total of 240,000 Damage to enemy Troops or buildings with spawned Barbarians	6,000 125
	2	Deal a total of 680,000 Damage to enemy Troops or buildings with spawned Barbarians	100 125
	3	Deal a total of 1,200,000 Damage to enemy Troops or buildings with spawned Barbarians	9,000 125

Deck

Royal Giant Furnace Control
Control tempo with Furnace, defend efficiently, then drop Royal Giant at the bridge with support. Use Fire Spirits to clear swarms so RG connects. Great against bait and midrange decks.

Furnace Double Prince Beatdown
Use Furnace to apply pressure and soften enemy troops. Once you gain an elixir lead, support a Giant or Prince push with Fire Spirits and splash damage. Zap helps Prince connect on defense or offense.

Fireball Bait Furnace Deck
This deck thrives on baiting out your opponent’s Fireball or Arrows, then punishing with Royal Hogs or Flying Machine. Furnace adds steady pressure while the rest of the deck overwhelms with value units. Play smart with Furnace placement and cycle to outlast their key spell.

Strategy

Control the Pace of the Game

Furnace is ideal for controlling tempo. Dropping it early in a match forces your opponent to react or play away from the Furnace lane. The constant spawn of Fire Spirits pressures both troops and the tower, making it harder for your opponent to build comfortable pushes. This pressure can give you more room to develop your strategy and dictate the flow of battle, especially in control or midrange decks.

Defensive Utility

While Furnace isn’t a hard counter to major win conditions like Hog Rider or Giant, it provides strong support defense. The Fire Spirits act as a line of defense against swarms like Skeleton Army, Goblin Gang, and Bats. This makes it a strong tool for decks that lack splash-damage troops. Against pushes with glass-cannon supports (e.g., Musketeer, Electro Wizard), the Fire Spirits soften or eliminate them so your tower or support troops can clean up.

Chip and Pressure

The Fire Spirits spawned from the Furnace can deal guaranteed chip damage if not answered. This is especially useful in decks that don’t rely on a direct-damage win condition. The consistent fireball-style hits can also force out spells or small troops from your opponent. Use this chip pressure to build a slow advantage, especially if your opponent doesn’t have a cheap, effective counter like Ice Spirit or Electro Spirit.

Synergize with Splash and Control Cards

Furnace pairs well with control and splash cards like Royal Giant, Executioner, and Fireball. It helps clear swarms so your main win condition can safely push forward. For example, if you’re playing Royal Giant, the Fire Spirits will clear Minions or Skeletons, allowing your RG to stay locked on the tower. The Furnace’s passive pressure also forces your opponent to split their focus between offense and defense.

Spell Management and Placement

Since Furnace can be targeted by spells like Fireball and Earthquake, avoid placing it near other valuable buildings or troops. Stagger your Furnace placements so they don’t provide your opponent with easy spell value. Against Earthquake decks especially, be mindful—once they know you’re using Furnace, they’ll try to shut it down every time it cycles back in.

Maximize Fire Spirit Timing

Smart Furnace players know when to drop the card so that the Fire Spirits spawn right as enemy troops approach the bridge. This ensures they deal damage before the enemy gets too close to your tower. It’s especially effective against bridge spam like Bandit and Ram Rider, as a well-timed Fire Spirit hit can completely shut down or cripple the push.

What Not to Do

Avoid using Furnace as a panic defense—it’s too slow and passive to stop fast, heavy pushes alone. Also, don’t overcommit trying to defend the Furnace itself. Sometimes letting it go and focusing on your cycle or counterpush is the smarter play. Lastly, don’t stack Furnace with other buildings if your opponent has spells like Poison or Earthquake.

Strength and Weakness

Strengths

Consistent Chip Damage

Furnace applies steady pressure through its spawned Fire Spirits, which can connect with towers or enemy troops and provide ongoing chip damage throughout the match. It helps wear down opponents over time, even if you’re not constantly attacking.

Great Against Swarms

The Fire Spirits do splash damage on impact, making Furnace excellent for clearing Skeleton Army, Goblins, Minion Horde, and Bats. This makes it an ideal support building against bait or spam-heavy decks.

Supports Pushes Well

Furnace spawns Fire Spirits behind your win condition (like Royal Giant or Hog Rider), making it harder for opponents to defend using swarms or glass-cannon troops. It helps your pushes break through defenses more reliably.

Passive Pressure and Lane Control

Even when you’re defending, the constant Fire Spirit spawns create lane pressure. This often forces your opponent to split their attention or spend elixir to deal with them, giving you room to build a counterattack.

Spell Bait Potential

Furnace can bait out spells like Fireball, Poison, or Earthquake, opening the door for other important cards like Flying Machine, Zappies, or Royal Hogs to get value.

Weaknesses

Vulnerable to Earthquake

Earthquake deals massive damage to Furnace and prevents Fire Spirits from spawning effectively, rendering the building almost useless in Earthquake matchups (e.g. Hog EQ, Royal Hogs EQ).

No Direct Damage or Tank-Stopping Power

Furnace can’t directly damage tanks or win conditions like Giant, Hog Rider, or Ram Rider. It’s not a hard-stop building like Goblin Cage or Cannon and must be paired with other defenders.

Low Immediate Value

Furnace takes time to provide value—it doesn’t deal instant damage like Tesla or Bomb Tower. In fast-paced decks or when facing aggressive pushes, it may not provide enough immediate defensive support.

Can Be Ignored by Smart Opponents

If your opponent has good cycle or air cards, they may choose to ignore the Fire Spirits entirely or use cheap counters like Ice Spirit, Skeletons, or Electro Spirit, reducing the Furnace’s effectiveness and elixir value.

Limited Air Defense

Fire Spirits only hit once, and they aren’t reliable for stopping full air pushes. Furnace doesn’t provide strong long-term air control, so it must be supported with cards like Archers, Musketeer, or Baby Dragon.

How to Counter the Furnace

Hard Counters to Furnace

These cards directly reduce or eliminate Furnace’s value by damaging it or neutralizing its Fire Spirits consistently.

Earthquake

• Completely shuts down the Furnace.
• Destroys the building over time and prevents Fire Spirits from spawning efficiently.
• Great in Hog Cycle or Royal Hogs decks.

Poison

• Slowly damages the Furnace while also clearing out Fire Spirits if timed right.
• Useful in Graveyard and control decks.

Fireball

• Doesn’t destroy the Furnace in one shot but weakens it significantly and often takes out surrounding support troops.
• Also baits out response if the opponent stacks troops behind Furnace.

Lightning

• Overkill for Furnace alone, but great if your opponent stacks Furnace with high-value cards like Flying Machine, Zappies, or Musketeer.

Soft Counters to Furnace

These cards don’t destroy Furnace itself but minimize or nullify the value of the Fire Spirits it spawns.

Electro Spirit

• Cheap and effective. It absorbs or neutralizes both Fire Spirits with its chain zap.
• Perfect for cycle decks and maintaining elixir advantage.

Ice Spirit

• Absorbs one Fire Spirit and freezes the other, keeping your troops or tower safe from splash damage.

Skeletons / Skeleton Army

• Can distract or absorb Fire Spirits, especially when placed correctly at the bridge.
• Watch for timing, though—poor placement = wasted swarm.

Archers / Spear Goblins

• Sit behind the tower or tank and safely eliminate Fire Spirits.
• Also provide air defense, making them good value cards.

Electro Wizard / Zappies

• Their stuns can reset or eliminate Fire Spirits before they reach your troops or tower.
• Good in decks that need controlled defense against splash.

How to Counter Furnace Strategically

• Ignore it (sometimes): If the Furnace is played in the opposite lane and isn’t supporting a push, it may be better to ignore the Fire Spirits and push the other lane.
• Split Push: If the opponent places Furnace in one lane, push the opposite side to avoid its splash support.
• Spell It Out: Use spells like Earthquake, Poison, or Fireball only when you can get extra value (hitting troops behind Furnace or denying a setup push).

Conclusion

In conclusion, the Furnace is an incredibly versatile card that can provide both offensive and defensive advantages, making it a valuable addition to many decks. Its ability to consistently spawn Fire Spirits offers continuous pressure on your opponent’s towers, dealing chip damage over time and forcing them to react. It excels at disrupting enemy pushes, distracting high-damage troops like Hog Rider, Giant, or Royal Giant, and providing support for your own pushes. Whether you’re using it in a Miner control deck, Royal Giant deck, Golem deck, or Mortar deck, the Furnace can fit seamlessly into different strategies, creating valuable opportunities for both defense and offense.

The key to effectively using the Furnace is understanding how to maximize its potential through smart placement and timing. Its ability to pull enemy troops and apply pressure to multiple lanes can force your opponent into awkward situations, making it difficult for them to mount a successful defense. When used with cards like Giant, Hog Rider, or P.E.K.K.A, the Furnace provides valuable support, clearing out swarms or distractions and allowing your tanks to reach the enemy tower. However, it’s important to know when to play defensively and avoid overcommitting to the Furnace, as it can sometimes be countered with spells like Poison or Earthquake, or by cards like Miner or Baby Dragon.

Overall, the Furnace is an essential card to master for players looking to control the pace of the game, apply pressure, and support their attacks. Experiment with different strategies and placements to figure out what works best for your deck and playstyle. By understanding its strengths and potential counters, you can take full advantage of the Furnace and turn it into a key tool for securing victories.

Spells such as Poison and Earthquake can also deal with the Furnace efficiently. Whether used in Miner control, Royal Giant, Mortar, or Golem decks, the Furnace provides valuable support and disruption. Experiment with different strategies and placements to find what works best for your playstyle and to master the full potential of this powerful card.

Frequently Asked Questions (F.A.Q)