Business Details
35 Years
experience
Expert Engineering Solutions
Guth DeConzo approaches engineering with a commitment to personal attention and technical excellence. Founded in 1991, we specialize in design, construction management, and commissioning services for complex systems in aviation, healthcare, education, and commercial sectors. Our team of experts, many with over 35 years of experience, delivers energy-efficient solutions and tailored project oversight. By maintaining a hands-on presence from project inception to completion, we ensure systems meet exact specifications while prioritizing client needs. Our principals remain directly involved in every project, fostering a culture of accountability and innovation. With a track record of 5,000+ successful projects across 25+ states and the Caribbean, we combine deep technical knowledge with practical problem-solving.Client trust is built through transparency, reliability, and measurable results, including $11 million in annual energy savings for recent projects. Certifications such as LEED and CCP commissioning validate our expertise in sustainable engineering practices. We measure success through client satisfaction, having partnered with organizations like Delta Airlines and Pfizer, and through long-term improvements in system performance. Always evolving, we integrate cutting-edge technology with proven methodologies to address modern infrastructure challenges.
Services
Energy Studies
Design Services
Construction Management
Commissioning
MEP Systems
Details
- Year established: 1991
Highlights and features
- We combine 25+ years of engineering expertise with hands-on project oversight.
- Our team includes LEED-certified and CCP-commissioning professionals.
- We guarantee measurable energy savings, as demonstrated by $11M annual savings in recent projects.
- Direct involvement of principals ensures accountability and technical rigor.
- We serve clients across 25+ U.S. states and the Caribbean with localized expertise.
Associations and certifications
- LEED
- ASHRAE
- USGBC
- IEEE
What people say
Expertise in complex systems
Measurable energy savings
Consistent project delivery
Services
Energy Studies
Our energy studies analyze complex systems to identify efficiency improvements, cost reductions, and sustainability opportunities. Using advanced modeling tools and field testing, we create master plans and implement $120M+ in capital upgrades. Clients benefit from proven results, including $11M in annual savings for educational institutions.
Commissioning
Commissioning ensures MEP systems operate as designed through hands-on testing and troubleshooting. We use state-of-the-art equipment to validate performance in BSL-3 labs and $250M hospital facilities. Our retro-commissioning services achieve sub-1-year payback periods by optimizing existing systems for efficiency and compliance.
Design Services
Our engineering design services cover HVAC, electrical, and plumbing systems tailored to client needs. From lab renovations reducing energy costs to NYC's first inverter-based gas engine installation, we combine code compliance with innovative solutions. Each project undergoes rigorous field condition checks for accuracy.
Construction Management
We provide end-to-end construction management with on-site presence and online tracking tools. Our 20+ year veteran team oversees $150M+ expansions, ensuring safety, budget adherence, and adherence to specifications through regular invoicing and change order management.
People
John Guth
Principal
With 37+ years in electrical/mechanical systems, John founded Guth DeConzo in 1991. Licensed in 20+ states, he mentors engineering students at Pratt Institute and City College while directing projects from concept to completion.
Jeremy McDonald
Principal
Jeremy brings 25+ years of MEP design and commissioning expertise to Guth DeConzo. A LEED-certified engineer and adjunct professor, he leads energy studies and STEM initiatives while managing complex healthcare and infrastructure projects.
Questions
What industries does Guth DeConzo specialize in?
We focus on aviation, healthcare, education, and commercial sectors requiring complex engineering solutions.
Can you help with energy efficiency projects?
Yes. We've delivered $11M in annual energy savings through master plans and retrofits for institutions like Stony Brook University.
Do you handle large-scale construction projects?
Our team manages projects valued up to $250M, including medical towers and airport renovations.
What regions do you serve?
We work across 25+ U.S. states and the Caribbean, with experience in both urban and remote locations.
Are your engineers certified for technical projects?
Our team holds certifications including LEED, CCP, and CEM, ensuring technical excellence in all services.
How do you ensure project quality?
We combine on-site presence with principal-level oversight and advanced testing equipment to guarantee system performance.
