This is a guide to opening doors and chests in Fire Emblem: Three Houses (FE3H). Read on to learn how to use keys as well as abilities to open doors and chests that show up in battle.

Locked Doors and Chests

Doors Block Entry for Enemies and Allies Alike

Doors can be beneficial or harmful to your party. Having the ability to open doors is a good way to control the state of the battle in some areas.

Chests Contain Items or Weapons

Chests are commonly found in battlefields. They are locked by default and contain items that will prove beneficial for your army. Make sure to always open treasure chests to make your characters stronger!

How to Open Doors and Chests

Use Keys

Keys are items used to open locks in the game. They are pretty cheap, so you can buy them in the market place and equip them to your units before starting the battle.

Purchase Keys in the Market

Keys can be purchased in the market place before starting a battle. Since they are so cheap, they can be purchased in huge quantities.

Use Abilities

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Class Abilities like Locktouch is an easier and cheaper way to open doors and chests. Locktouch can be equipped by reclassing your units to a Thief or an Assassin. Similarly, Ashe's Lockpick ability provides the same effect as Locktouch, so if you have Ashe in your party, Doors and Chests will be really easy to open.

Use Convoy

Carrying a key in your inventory and giving it out to units that are near chests using Convoy is a good method to opening doors and chests. Just make sure that Byleth is near your party members to be able to do this!

Fire Emblem Three Houses Related Links

Beginner Guides

Stats and Game Mechanics
What Does Luck Do?	What Does Dexterity Do?
What Does Weight Do?	What Does Charm Do?
What Does Authority Do?	What Does Speed Do?
The Attack Speed Formula	How To Learn and Equip Abilities
Character Guides
Recruitment Guide	Lecture Guide | How to Instruct
Classes That Can Use Magic	List of Unique Classes
Best Classes for Each Character	What Happens When Someone Dies?
How to Change Outfits	-
Battle Guides
How to Beat Demonic Beasts	How to Beat the Death Knight
Gambit Guide	Training Weapons or Iron Weapons?
How Do Linked Attacks Work?	How to Use Divine Pulse
How to Use Auto Battle	List of Terrains
How to Open Doors and Chests	-
Building your Army
Best Characters to Recruit	What Are Adjutants?
How to Repair Weapons	Are Rusted Weapons Worth Forging?
Where to Get Umbral Steel	What is Renown?
Where to Get Advanced Seals	-
Maddening Guides
Maddening Tips and Guide	Best Characters for Maddening
FAQS
What Carries Over To New Game Plus?	How Long Does It Take To Beat FE3H?
Difficulty Levels and Differences	Is There a Weapon Triangle?
Which House Should You Pick?	-