About S I Mechanical

Mike Irwin - President


 Mike has been in the HVAC industry since 1994 and holds an Associate of Applied Science degree.  Mike oversees the project management team as well as the overall operation of the business.  In addition to overseeing the office, Mike is also a certified NCCER sheet metal instructor and conducts the sheetmetal apprenticeship program.  Mike has been with our company since spring of 2012.  

Philip Shultz - Vice President


 Philip has been in the HVAC industry around Austin since 1993. Philip oversee all field operation from service to construction.  Philip has implemented the quality control and production processes that make SI Mechanical an industry leader in performance and safety and our record shows it.  He started with our company in the spring of 2012. Philip’s project experience includes data centers, clinical labs, medical, process facilities and tenant finish out.​ 

Riley Sullivan - General Manager


 Riley graduated from Texas A&M in 1998.  He started his career in the petrochem industry traveling the gulf coast before finally settling in the HVAC industry in 2003.   Riley joined SI Mechanical in 2014 as General Manager.  Riley specializes in pre-construction planning, budgeting and estimating. His extensive design-build experience helps customers reach their goals for maintaining the budget while optimizing building performance all on a fast track schedule.  Let Riley help you design and construct your next mechanical project.