Horizon Credit Union is highly praised for its friendly and efficient customer service, particularly from a standout employee named Kenna. Customers appreciate her quick responses, positive attitude, and personal touch, as she greets them by name and provides helpful answers to their questions. The atmosphere is described as warm and welcoming, resembling a "mom and pop" vibe rather than a large corporate bank. Overall, clients find their experiences at Horizon Credit Union to be pleasant, professional, and genuinely satisfying.