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45 Years
experience
Trusted MEP Engineering Solutions in Rye, NY
Since 1981, our firm has been delivering MEP consulting services to the Tri-State Area and beyond. Our decades of experience allow us to seamlessly integrate proven techniques with modern technology, creating innovative and reliable systems. We have completed over 2,500 projects, ranging from consultations on problematic systems to complete mechanical and electrical designs for projects exceeding $120 million. Our engineers are trained in multiple disciplines, ensuring holistic design solutions and seamless coordination. We specialize in mechanical and electrical engineering services for architects, schools, municipalities, and property management firms.

Our commitment to integrity, innovation, and long-term relationships guides every project we undertake. We prioritize energy efficiency and advanced technology, designing systems that meet budgetary and practical constraints. Our team includes experts in BIM (Revit MEP) design, with extensive experience in large-scale projects. We actively contribute to the community through charitable initiatives and an intern program exposing students to engineering fundamentals. Our reputation for reliability and quality remains central to our operations.
Services
HVAC Design Electrical Systems Plumbing/Fire Protection LEED Consulting Revit MEP Design Cogeneration Systems Geothermal Design Emergency Generators Facility Energy Reports Code Compliance Analysis
Details
  • Year established: 1981
Highlights and features
  • We offer 40+ years of experience in MEP engineering and design.
  • Our engineers are trained in multiple disciplines for holistic solutions.
  • We specialize in BIM (Revit MEP) design for modern projects.
  • We prioritize energy-efficient systems and innovative technology integration.
  • Our team has completed over 2,500 projects across diverse sectors.
Services
HVAC Design
We design energy-efficient HVAC systems tailored to commercial and residential projects. Our engineers optimize performance while adhering to budgetary constraints. Our solutions integrate modern technology for reliability and sustainability.
Electrical Systems
Our electrical engineering services include complete system design and emergency generator installations. We focus on safety, code compliance, and energy efficiency. Projects range from small upgrades to large-scale complexes.
LEED Consulting
We provide MEP designs for LEED-certified buildings, including solar and geothermal systems. Our team ensures compliance with sustainability standards. We specialize in high-efficiency HVAC and renewable energy integration.
Revit MEP Design
Our engineers use Revit for advanced BIM-based MEP design. This ensures precise coordination across disciplines. We deliver detailed models for complex projects, improving construction accuracy and efficiency.
Cogeneration Systems
We design cogeneration plants that maximize energy efficiency and reduce costs. Our systems integrate with existing infrastructure for optimal performance. These solutions are ideal for large commercial and industrial facilities.
People
Werner E. Tietjen
Founder
With over 40 years of experience, Werner founded the firm in 1981 and established its reputation as a leading MEP consultancy. His expertise in mechanical engineering and commitment to innovation remain foundational to our success.
Edison Venegas
Principal
Edison joined as a principal in 2018, bringing extensive experience in electrical engineering and project management. He leads complex designs and ensures technical excellence across all projects, emphasizing client collaboration.
Questions
What services does Tietjen Venegas offer?
We provide mechanical, electrical, plumbing, and LEED engineering services, including Revit MEP design and energy-efficient systems for commercial, residential, and institutional projects.
How long has the firm been in business?
We have been providing engineering services since 1981, with over 40 years of experience in the Tri-State Area and beyond.
Do you work on large-scale projects?
Yes, we handle projects from small upgrades to complexes costing over $120 million, including HVAC, electrical, and sustainable energy systems.
Are you experienced in green building design?
Yes, we specialize in LEED consulting, solar, geothermal, and cogeneration systems to meet sustainability goals for modern buildings.