Receive your window replacement quote via email with no need for an in-home visit. No salespeople. No pressure. Zen Windows provides stress-free window replacement services in Harrisburg, York, Lancaster, and the surrounding cities and counties, without the stress and frustration of lengthy sales presentations and high-pressure salespeople. By dealing directly with owners Andrew and Sarah Zahn, you are assured that your experience will be the best from initial contact to following up after the expert installation.