"Crafting comfort with purpose and compassion.”

mensch (men(t)SH)

noun: a person of integrity and honor

Founded by John K. Chavez, an HVAC-R veteran with nearly four decades of hands-on experience and industry education, hvacMENSCH provides critical services rooted in engineering fundamentals, best practices, building science, and a deep commitment to indoor air quality. We serve building owners, contractors, architects, builders, real estate professionals, and manufacturers with system design, maintenance, performance analysis, consulting, and owner representation—grounded in both technical expertise and real-world insight. Whether residential, commercial, or industrial, every project benefits from our focus on healthy air, durable buildings, and smart, efficient systems. As your advocate, hvacMENSCH is dedicated to delivering exceptional results for every client.

Your trusted HVAC industry insider, advocate and expert advisor.

service | expertise | resource | leadership

"From meeting at LG training in California, to chatting and then working together on a problem project, John's professionalism and candor is unmatched. I consider myself fortunate to be able to work together. Customers love him as well."

- Joshua Tonihka, Owner, Sustainable Climate Solutions

”I am a high performance home builder/remodeler in Texas Hill Country. I have used John on several projects and have been very happy with the results. My projects tend to be more value oriented and finding an HVAC consultant & contractor that will keep budget in mind has proven to be very difficult. I wouldn't call John cheap, but I do find him reasonable. He is extremely knowledgeable and I have enjoyed many conversations with him where we try to accomplish something others are spending lots of money on for much less. High performance homes all start with good design and John has become a valuable member of my design process. I can't recommend him enough.”

- Robert Ridenour, Auriel Builders

Offering Next-Level HVAC-R Services

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

HVAC Design

At hvacMENSCH, we know how to design 21st-century HVAC systems that prioritize human health, comfort, and efficiency. Guided by building science and engineering best practices, we create systems that form the foundation for exceptional building performance, energy efficiency, and indoor air quality.

Thoughtful design influences every aspect of an indoor environment, from occupant well-being to long-term operating costs. We provide full MEP design services, including energy modeling, for commercial, residential, and industrial projects, delivering world-class solutions tailored to each project’s unique needs, budget, and technical requirements.

Owner Representation

Let hvacMENSCH serve as your advocate throughout your project's life cycle. We handle contract and vendor negotiations, vetting, liaise with stakeholders, and ensure that best practices are always followed.

Our goal is to fully understand and absorb your project's intentions, making them our own to ensure a successful outcome

For those seeking to streamline their procurement process and realize substantial cost savings, hvacMENSCH offers a unique and valuable service. We can organize your project needs and scope of work to create an accurate equipment and materials list.


By teaming with hvacMENSCH,
our clients can enjoy a seamless and efficient purchasing experience, reduced fees, and realize cost savings of up to 60%

Whether you're building a new HVAC system or need help with an existing system, hvacMENSCH has you covered. With expertise in HVAC Fundamentals and Design best practices, Inverter-based systems, Energy Recovery Ventilators, Dehumidification, and Building Science, hvacMENSCH can recommend, support, monitor, and help ensure that all your HVAC systems and equipment run at
peak performance.

Client Concierge
Equipment Analysis
Problem Resolution
Trusted Advisor
Construction Projects
Trainer/Educator
Mystery Shopper
Customer Profiling
Networking
  • Blower Door Test

  • Site Surveys

  • Commissioning

  • Performance Analysis

more services & resources

Brand Ambassador
  • Market Research

  • Case Studies

  • Special Projects

  • Sales Channels

  • Technical Support

  • Project Management

  • Report Writing

  • Vendor Relations

  • Mechanical Adjuster

  • Value Engineering

  • Humidity Control

  • Expert Witness