The Yellow Heart Canister is an item added by Tinkers' Construct. When it is equipped in the Armor tab added by Tinkers' Construct in the player's inventory interface, it increases their maximum health by 2 points (1 heart), depicted by overlaying an orange heart over preexisting ones. If 10 Red Heart Canisters are already equipped, the additional health from the Yellow Heart Canisters will then replace those orange hearts with yellow ones.
A total of 10 Yellow Heart Canisters Can be equipped, increasing the maximum health of the player by 20 points (10 hearts). When equipped along with 10 Red Heart Canisters, increases the maximum health by 40 points (20 hearts).
