Haldeman Mechanical, Inc

Founded in 1939, Haldeman Mechanical has proudly served the Manheim community and surrounding Lancaster County for more than 86 years. From generation to generation, our team has been trusted for dependable plumbing, heating, cooling, and water treatment solutions; always built on craftsmanship, honesty, and care for our neighbors. On October 1st, 2025, Haldeman Mechanical joined JM Lapp Plumbing & Heating, a locally owned and growing mechanical services company based in New Holland, PA. Together, we carry forward the Haldeman tradition while expanding our resources to serve customers with excellence, speed, and innovation. What this means for our community: The same familiar faces and trusted technicians. Expanded services and capabilities to meet today’s needs. A shared commitment to quality, reliability, and long-term relationships. Our story is rooted in nearly nine decades of service—and our future is built on ensuring that families, businesses, and neighbors in Lancaster County can always count on us. Services We Provide: Plumbing Installation & Service Heating & Cooling Solutions Water Treatment Systems Residential & Light Commercial Projects Haldeman Mechanical, now a JM Lapp company—honoring the past, building the future.