Business Details
50+ Years
experience
Your Trusted Engineering Partner in Pennsylvania
Gatter & Diehl has been delivering high-quality engineering, design, and construction management services since 1946. Our team of experienced professionals specializes in pre-construction planning, technical design, and project management for complex facilities across healthcare, education, senior living, and commercial sectors. We utilize advanced tools like Building Information Modeling and geothermal software to optimize project outcomes while maintaining cost-effectiveness.With decades of combined expertise, our licensed engineers and LEED-certified professionals guide clients through every phase from land development to occupancy. We prioritize client collaboration, life/work balance for employees, and community engagement through educational programs like our STEAM Student Observation initiative. Our commitment to excellence has earned us recognition for delivering premium value across 30+ licensed states.
Services
Pre-construction Planning
Engineering Design
Project Management
Energy Modeling
Commissioning
Details
- Year established: 1946
Highlights and features
- We offer 75+ years of engineering experience since 1946
- Our team includes LEED-certified professionals and licensed engineers
- We utilize advanced BIM and energy modeling software tools
- We provide full-service project management for developments over $20 million
- We maintain 30+ licensed states for nationwide project capabilities
Associations and certifications
- USGBC
Services
Pre-construction Planning
Our technical design experts conduct master planning and facility assessments to prepare clients for future developments. We analyze existing conditions and provide strategic guidance for expansions or campus-wide projects of any scale. This service ensures optimal project readiness through comprehensive feasibility studies and phased implementation strategies.
Engineering Design
We deliver full-spectrum engineering services from land development to occupancy. Our team navigates administrative permitting and technical requirements while specializing in mechanical and electrical systems for healthcare, education, and commercial facilities. This includes HVAC, plumbing, fire protection, and integrated power systems design.
Project Management
We manage complex projects exceeding $20 million and 100,000 sq. ft. Our comprehensive approach covers planning, estimating, design, bidding, and occupancy phases. We work directly with owner executives to maintain quality control, cost efficiency, and timely delivery across all project stages.
Energy Modeling
We utilize advanced software tools including BIM, geothermal modeling, and solar analysis to optimize building performance. Our energy modeling services identify efficiency opportunities and predict system behavior, ensuring sustainable solutions that reduce long-term operational costs for commercial facilities.
Commissioning
Our commissioning process validates building systems performance through rigorous testing and documentation. We ensure mechanical, electrical, and HVAC systems operate as designed while meeting LEED certification requirements. This service guarantees optimal functionality and energy efficiency for healthcare, education, and commercial facilities.
People
Jeff Crist
President
Licensed Professional Engineer and LEED Accredited Professional with Building Design + Construction specialization. Leads strategic direction and technical excellence across all projects.
Rich Kreiger
Vice President
Licensed Professional Engineer and LEED AP BD+C specialist managing complex engineering projects. Oversees technical staff and ensures adherence to quality standards.
Andrew Andreyo
Professional Engineer
Experienced mechanical engineer specializing in HVAC and plumbing systems design for healthcare and commercial facilities. Provides technical leadership on major projects.
Hannah Roy
Human Resources
Manages recruitment and internship programs. Primary contact for career opportunities and coordinates STEAM educational initiatives for future engineering professionals.
Daniel Crist
Engineering Intern
Entry-level engineer supporting design tasks under senior supervision. Participates in mechanical and electrical system development for commercial projects.
Questions
What engineering services do you specialize in?
We specialize in mechanical and electrical engineering for healthcare, education, senior living, and commercial facilities including HVAC, plumbing, and power systems.
Do you handle large-scale construction projects?
Yes, we manage complex projects exceeding $20 million and 100,000 sq. ft. from planning through occupancy with dedicated project management teams.
Are your engineers LEED-certified?
Yes, we have LEED Accredited Professionals with Building Design + Construction credentials who implement sustainable solutions across our projects.
Do you offer internship opportunities?
Yes, we provide paid summer internships for STEAM students working toward 3.0+ GPAs. Applications are accepted until April 30th for Mechanicsburg-based positions.
