Shafer Mechanical

Shafer Mechanical is a trusted commercial HVAC and plumbing contractor serving San Antonio and communities across Texas. With more than a century of experience, we partner with businesses, facilities teams, and property managers to keep buildings operational, safe, and efficient. We understand that downtime impacts operations, revenue, and reputation. That is why our approach focuses on proactive maintenance, rapid response, and clear communication. From complex HVAC systems and commercial plumbing infrastructure to emergency service and long-term maintenance planning, our team delivers solutions designed to support performance and reliability. Our services include commercial HVAC installation, repair, and maintenance, rooftop units, chilled water systems, VAV systems, boilers, gas piping, plumbing repair, and preventative maintenance programs tailored to each facility’s needs. At Shafer Mechanical, we believe strong partnerships are built on trust, accountability, and doing the right thing. We work alongside our customers to support compliance, manage risk, and plan confidently for the future. Serving commercial, industrial, and institutional facilities with 24/7 emergency service.