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Our Story2019-01-08T05:14:44-05:00

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25 Years of Building Systems Excellence

Building systems are nothing without people—people to design them, people to build them, people to use them. This simple observation lies at the heart of Guth DeConzo. We approach our work with a level of personal attention and dedication that is nearly impossible to find elsewhere. It’s why one of our principals is hands-on with every project, why we maintain a continual presence on job sites, why we sit down with you after completion to identify areas for future improvement. It’s why we treat everyone with the utmost respect, from the client’s CEO to the site cleanup crew.  

Since our founding in 1991, this approach has delivered results for our firm and our clients. Over the years, some of the world’s largest organizations—Delta Airlines, Forbes, Honeywell, Pfizer, and others—have asked us to partner with them. We are experts in such uncompromising categories as airports and laboratories. In all, we have completed more than 5,000 successful projects, thanks to a team of professionals (many with 35-40 years’ experience) who look forward to coming to work every day to serve our clients.  

We are a staff of over 60 professionals with clients and projects in over 25 states and the Caribbean; designing, building and refining engineered solutions for a sustainable future.

Meet Our Leadership Team

John Guth, PE
John Guth, PEPrincipal
John Guth has over thirty-seven years of experience in the design and management of electrical and mechanical systems for transportation, institutional and commercial projects. He founded Guth Engineering in 1991 and is licensed to practice engineering in over twenty states.  As a principal, either John or his partners, Matt DeConzo and Jeremy McDonald are involved in every client project from inception to completion.

John is a member of the USGBC, IEEE and ASHRAE. He has also served as an adjunct professor at Pratt Institute and City College of New York, which has given him the opportunity to mentor future generations.

Matthew DeConzo, PE
Matthew DeConzo, PEPrincipal
Matthew DeConzo has over thirty-three years of experience in the design and management of mechanical systems for institutional and commercial projects; as well as having extensive experience in health care, hotel and laboratory design for both new and rehabilitation projects in the US and internationally.  He joined the firm in 2006.

Matt is a member of the American Society of Heating, Ventilating and Air-Conditioning Engineers, American Society of Hospital Engineers, Association of Energy Engineers, and served on the Board of Directors for New York City Society of Professional Engineers. He presented at symposium for the Hospital Engineering Society of Greater New York.

Jeremy McDonald, PE
Jeremy McDonald, PEPrincipal
Jeremy McDonald has over 25 years of experience in MEP Design, energy services, commissioning, and the construction management industry. His expertise includes energy studies, design services, construction management, management and commissioning.

Jeremy is LEED certified, CCP Commissioning Certified, a Certified Energy Manager (CEM) and a Professional Engineer (NYS).  He is also an adjunct professor for Rensselaer Polytechnic Institute. Jeremy’s commitment to education includes serving as a member of the Cohoes School Board, mentoring and various STEM Initiatives.

Learn More About Our Leadership Team
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