Alison Lange – Shafer Services Plus President

Raised in West Texas, Alison brings with her a legacy of hard work and service. She waited tables 10 hours a day to put herself through college, graduating Magna Cum Laude from Angelo State University with a bachelor’s degree in communications and an English minor — all within three years. She spent the next 25 years becoming a marketing leader in San Antonio where she has served education, tourism, culinary, literacy, health, technology, home services, government, non-profit and corporate sectors.

Alison’s  leadership helped Shafer achieve its top two performing years in the company’s 135-plus-year history. Additionally, she oversaw rebranding and launched Shafer Serves, a philanthropic program that has donated more than $55,000 in equipment and services to local non-profits and community members such as Boys and Girls Clubs of San Antonio, SA Youth, Guide Dogs of Texas, military veterans and The San Antonio Food Bank.


Jason Zapalac – Chief Commercial Officer 

Jason is a seasoned leader and industry expert who established Shafer’s commercial division in 2019 with one truck—his. In just three years, he grew Shafer’s commercial division to 14 trucks, four account managers, and a fully functional operations team that is growing dramatically. He also helped Shafer launch commercial plumbing in 2021. Today, his division oversees four departments: commercial projects, industrial refrigeration, commercial plumbing, and mechanical. Jason uses his 24 years of industry experience to provide impeccable service and treat people like family. He has diverse knowledge beginning in 1998 as a pipefitter, where he later transitioned to mechanical service, becoming a journeyman in 2002. He paused his career from 2003-2007 to serve in the United States Army. After which, he worked his way up through the ranks at Shell Oil as their R&D facilities mechanical Subject Matter Expert (SME). He then worked as a special projects manager, traveling the Gulf Coast working in refineries and petrochemical plants to provide design-build services until he joined the Shafer family in 2019.


Frank Ruhr- Master Plumber/Plumbing Service Manager

There isn’t a plumbing challenge that Frank can’t solve. As a master plumber, Frank has worked on most of the high-rise buildings in San Antonio; as well as many of the area’s hospitals, manufacturing plants, hotels, colleges, and restaurants. In addition to his master plumber certification, Frank holds a backflow license and is certified in OSHA 10 and in operating forklifts, bottom lifts, and scissor lifts.


Josh Mattox- Commercial Projects Manager

With 14 years of HVAC field experience, John is an exceptional commercial project manager. He is efficient in troubleshooting, diagnosing, and repairing all ranges of HVAC equipment, from light to heavy. As commercial projects manager for Shafer Services Plus; Josh evaluates job sites, creates management plans, orders equipment and sees installations through to completion. Josh holds a Class A license E endorsement.


Nick Gauthier- HVAC Service Manager

Nick has worked in the HVAC industry for eight years, beginning his career as a residential service technician and eventually moving into commercial operations. In 2020, he became Shafer’s commercial HVAC service manager where he has helped grow the service department and created a level of service diversity that is second to none. His stellar technical aptitude and leadership elevates service capabilities and the customer experience daily. He has helped Shafer Services Plus become a Certified WEBS Contractor. He holds numerous technical certifications including TDLR and NATE Level 5.

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