You should force your partnership to 4 Hearts, using this logic:
You have 4 cards in hearts (a major suit) so you know you have at least an 8 card fit.
You hold 16 points, so you know your hands have a combined valued of at least 28 points.
You need 25+ points to bid for "game" in a major suit, which will give your side a "game bonus".
Experienced players would make a strength-showing bid first (like 2 Clubs, or a conventional bid like Jacoby 2NT) and then bid 4 Hearts*.
*A direct raise to 4 Hearts shows a weak hand with many hearts, which makes it hard for the opponents to enter the auction. For example:
♠3
♥KQ983
♣T943
♦986