mensch (men(t)SH)

noun: a person of integrity and honor

Founded by John K. Chavez, a licensed HVAC contractor and design-build professional with nearly four decades of hands-on field experience and industry education, hvacMENSCH supports building projects through a combination of contractor-performed HVAC design-build services and independent technical advisory support.

Our work bridges building science, engineering fundamentals, and real-world field experience to help clients better understand system options, performance considerations, and practical tradeoffs. Although hvacMENSCH frequently operates at the advisory and owner-representation level, our perspective is grounded in licensed HVAC contracting practice and hands-on experience with installation, commissioning, and system operation, ensuring guidance informed by real-world conditions.

hvacMENSCH provides system evaluation, design guidance, performance analysis, technical advisory, and owner-representation services to building owners and project teams across residential, commercial, and industrial projects. Our work emphasizes healthy indoor air, durable buildings, and HVAC systems grounded in sound engineering and real-world performance. Where required, MEP documentation is developed in coordination with appropriately licensed professionals, including Oscar Villarreal, P.E.

We help clients navigate complexity, evaluate options, and make informed decisions.

Your trusted HVAC industry insider and technical advisor.

service | expertise | resource | leadership

hvacMENSCH offers a comprehensive range of HVAC support, repair, installation, and advisory services tailored to the needs of building owners, contractors, architects, builders, real estate professionals, and manufacturers.

Permit Ready Design Support

hvacMENSCH provides HVAC system planning and design support focused on health, comfort, durability, and energy efficiency. Grounded in building science and informed by engineering best practices, our work aligns system intent, performance goals, and real-world operating conditions.

Where permit submittals or stamped documents are required, design documentation is developed in coordination with appropriately licensed professionals.

Owner Representation (Advisory Role)

hvacMENSCH provides owner-side technical representation to support informed decision-making throughout a project. Services may include review of contracts, vendor proposals, and technical scope, along with coordination and communication support.

Our role is advisory in nature and focused on helping owners understand options, risks, and tradeoffs—not directing construction means or methods.

hvacMENSCH offers procurement and coordination support to help clients organize project needs, scope equipment options, and evaluate materials. Our goal is to streamline decision-making and improve clarity during the purchasing process.

Savings, efficiencies, and outcomes vary by project and are influenced by market conditions, scope, and execution.

hvacMENSCH provides equipment evaluation and analysis for new and existing HVAC systems. Drawing on HVAC fundamentals, inverter-based systems, ventilation, dehumidification, and building science principles, we help clients assess options and understand performance considerations.

Recommendations are provided as technical guidance and are implemented by licensed contractors under project-specific agreements.

Client Concierge

Equipment Analysis

Problem Project Assessment

Advisory Services

HVAC Installation

Trainer/Educator

Mystery Shopper

Diagnostics and Repair

Special Projects

• Blower Door Testing

• Functional Reviews

• Commissioning Support

• Performance Assessments

Project Support

• Market Research

• Case Studies

• Vendor Relations

• Sales-Channel Support

• Customer Persona Profiling

• Technical Support

• Independent Technical Review (Project-Specific)

• Ventilation Design Concepts

• Humidity Control

• Vendor Relations

• Value Engineering Support

• Technology and Controls Review and Support

• Equipment Analysis

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