Business Details
45 Years
experience
Emergency
services
Your Trusted HVAC & Electrical Partner in Erie, PA
Founded in 1981, Electrical & Mechanical Systems (EMSI) is a family-owned business rooted in Erie, Pennsylvania, delivering comprehensive HVAC and electrical solutions across residential and commercial sectors. With over four decades of experience, we specialize in heating, cooling, ventilation, and electrical systems, serving Erie County, western New York, and northeast Ohio. Our dual expertise in HVAC and electrical contracting under one roof simplifies service needs while ensuring quality and reliability.We pride ourselves on clean workmanship, responsive service, and lasting client relationships, supported by in-house sheet metal fabrication for faster project timelines. As a second-generation company, we remain committed to integrity, craftsmanship, and client trust, actively participating in industry organizations and community initiatives to elevate standards and foster growth.
Services
Commercial HVAC Maintenance
Electrical Panel Upgrades
EV Charger Installation
Generator Installation
Sheet Metal Fabrication
Commercial Boiler Services
Ductless AC Systems
Indoor Air Quality
Lighting Installations
Tenant Build-Outs
Details
- Year established: 1981
Highlights and features
- We offer 40+ years of combined HVAC and electrical expertise in the tri-state region.
- Our team is fully licensed in Pennsylvania and Ohio for residential and commercial projects.
- In-house sheet metal fabrication ensures faster timelines and custom-fit HVAC solutions.
- We maintain long-standing relationships with contractors and repeat clients across Erie.
- Active involvement in industry organizations like IEC and ACCA elevates our standards.
Services
Commercial HVAC Maintenance
Our commercial HVAC maintenance plans ensure systems operate efficiently year-round. Technicians perform quarterly inspections, tune-ups, and optimizations to prevent downtime and extend equipment life. Clients benefit from consistent comfort, reduced energy costs, and compliance with industry standards across offices, schools, and industrial facilities.
Electrical Panel Upgrades
We upgrade outdated electrical panels to meet modern code and energy demands. Services include replacing breaker panels, integrating EV chargers, and ensuring safety for residential and commercial properties. Clients receive reliable power distribution, improved safety, and future-ready systems capable of handling increased electrical loads.
Sheet Metal Fabrication
In-house sheet metal fabrication produces custom ductwork and components for HVAC systems. Spiral and rectangular ducts, roof curbs, and fittings are built to precise specifications. Clients gain faster project timelines, seamless installations, and durable solutions tailored to commercial and industrial applications.
Generator Installation
We install and maintain whole-home and commercial backup generators for uninterrupted power. Services include automatic transfer switch setup, permitting, and long-term maintenance plans. Clients experience reliable power during outages, reduced downtime, and peace of mind with Generac-authorized expertise.
Ductless AC Systems
Commercial ductless AC systems provide zoned cooling for spaces without traditional ductwork. We design and install energy-efficient mini-split systems tailored to tenant finish projects and specialized environments. Clients enjoy precise temperature control, lower energy bills, and improved air quality without extensive retrofitting.
People
Stephen Herbstritt
President
Stephen leads EMSI with 30+ years of HVAC and electrical expertise. Licensed in PA and OH, he focuses on operational excellence and strategic growth while contributing to IEC leadership and the Erie YMCA Board.
Cara Herbstritt
Administrative Officer
Cara manages EMSIs HR, finance, and operations. With 15+ years in professional management, she drives internal systems and serves on IECs National and PA Boards, recognized in IEC Insights magazine for leadership contributions.
Bob Herbstritt
Founder
Bob founded EMSI in 1975 as a master electrician. Retired from daily operations, he remains a symbol of the companys founding values: craftsmanship, integrity, and client trust that guide EMSIs legacy.
Questions
What areas do you serve?
We serve Erie, PA, and surrounding regions including northwest Pennsylvania, western New York, and northeast Ohio.
Do you offer emergency HVAC services?
Yes, we provide emergency HVAC repairs for commercial and residential clients across our service areas.
Are your electricians licensed?
Yes, our team is fully licensed and insured in Pennsylvania and Ohio for all residential and commercial projects.
Can you install EV chargers?
Yes, we install Level 2 EV chargers for homes and businesses, ensuring code-compliant integration with electrical panels.
Do you work with outside contractors?
Yes, we collaborate with general contractors, facility managers, and mechanical contractors on commercial projects.
What HVAC maintenance plans are available?
We recommend quarterly maintenance for commercial systems to optimize efficiency, prevent downtime, and extend equipment life.