Call Now
Website
Call
Business Details
42 Years
experience
Trusted HVAC Contractors in Oakland, CA
Founded in 1984, H & M Mechanical Group has established itself as a leader in mechanical engineering services. With over 70 years of combined experience among our principals, we specialize in Heating, Ventilating, and Air Conditioning (HVAC) design, Plumbing design, Energy Analysis, and Fire Protection systems. Our approach prioritizes practicality over theoretical complexity, ensuring solutions align with budget constraints, occupancy needs, and energy efficiency standards. We actively integrate sustainable design principles through certifications like LEED, CHPS, CalGreen, and Green Point Rating, reflecting our commitment to environmental responsibility. Our team utilizes advanced technologies, including AutoCAD and Revit BIM platforms, to deliver precise and innovative designs.

We emphasize timely communication and collaboration with architects, owners, and consultants to ensure project success. Our LEED Accredited Professionals bring specialized expertise to projects requiring certification compliance. By balancing technical rigor with client-focused service, we aim to exceed expectations in every project. Our response time philosophy ensures prompt handling of inquiries, submittals, and design adjustments, fostering client satisfaction. With a legacy of adapting to industry advancements, we remain at the forefront of mechanical engineering innovation while maintaining a steadfast commitment to quality and reliability.
Services
HVAC Design Plumbing Design Fire Protection Energy Analysis LEED Consulting CHPS Certification CalGreen Compliance Building Information Modeling AutoCAD Drafting Fire Sprinkler Systems
Details
  • Year established: 1984
Highlights and features
  • We offer 70+ years of combined mechanical engineering experience.
  • Our team includes LEED Accredited Professionals for sustainable design.
  • We utilize Revit BIM technology for precise, modern solutions.
  • Our response time philosophy ensures timely client communication.
  • We provide comprehensive systems balancing energy efficiency and budget.
Associations and certifications
  • LEED
Services
HVAC Design
Our HVAC design balances energy efficiency, budget constraints, and occupant comfort. We create customized solutions for residential and commercial buildings using advanced modeling software. With LEED-certified professionals, we ensure systems meet sustainability standards while maintaining optimal performance and code compliance.
Plumbing Design
We design plumbing systems that integrate with energy efficiency goals, especially for all-electric buildings. Our solutions optimize domestic hot water systems while meeting California's strict environmental regulations. Designs consider long-term maintenance and code requirements for residential and commercial applications.
Fire Protection
Our fire protection services include comprehensive sprinkler system design for various building types. We ensure compliance with current fire safety codes while integrating systems seamlessly with overall building design. Solutions prioritize life safety and property protection through modern engineering practices.
Energy Analysis
We conduct detailed energy analysis using CEC-approved software to model building performance. Our Title 24 compliance reports evaluate HVAC, plumbing, and envelope systems to maximize efficiency while maintaining occupant comfort and health standards for sustainable building certification.
LEED Consulting
Our LEED Accredited Professionals guide projects through certification processes for Leadership in Energy and Environmental Design. We incorporate green building strategies that reduce environmental impact while meeting performance requirements for energy efficiency and occupant well-being.
People
Gary Hennings
Principal
With decades of mechanical engineering experience, Gary leads design projects focusing on sustainable systems integration and code compliance.
John Chou
Principal
John specializes in energy analysis and BIM implementation, bringing technical expertise to complex mechanical system designs.
David Sandoval
Senior Engineer
David focuses on fire protection systems and plumbing design, ensuring solutions meet both functional and regulatory requirements.
Stephen Wafer
Project Manager
Stephen coordinates client communication and project timelines, maintaining H & M's commitment to timely, responsive service delivery.
Questions
What mechanical engineering services do you offer?
We provide HVAC design, plumbing systems, fire protection, energy analysis, and LEED-certified sustainable solutions using BIM technology.
How long has your company been in business?
H & M Mechanical Group has served Northern California since 1984, with 70+ years of combined engineering expertise.
Are your engineers LEED-certified?
Yes, we employ LEED Accredited Professionals who specialize in sustainable design and certification compliance.
What technology do you use for design projects?
We utilize Revit BIM platforms and AutoCAD for precise, modern mechanical system modeling and documentation.
How do you handle client communication?
Our response time philosophy ensures prompt handling of inquiries, submittals, and design adjustments to maintain project momentum.
What building codes and standards do you follow?
We comply with LEED, CHPS, CalGreen, and Green Point Rating systems while meeting all local fire and safety regulations.
Reviews (6)
Jon Jenkins
Mar 09, 2022 Report
This place did solid work at our home doing some venting for a heater, and when we hit an issue with quoted versus billed labor cost, the owner didn't hesitate to make it right. Highly recommended.
Ashley Murray
Sep 29, 2021 Report
I absolutely love this company, we have very unique homes out here and H&M has always delivered great quality service. They help us turn our swamp coolers on and off each season, and it's been a great company for our units. Services: A/C system maintenance, HVAC system maintenance
Doug Young
Sep 14, 2021 Report
The H&M team did a great job improving the performance of our evaporative cooler in our condo at the Arista Live Work Lofts. Thanks for your help. Service: A/C system maintenance
Laurence Ferguson
Jan 26, 2021 Report
On the hottest day of the year we're very pleased with the professional check-up that Joe performed on our AC system; particularly the thorough inspection and maintenance of the outdoor condenser unit. Terrific workmanship and customer service at a very reasonable price! Service: A/C system maintenance
Helen El Mallakh
Jan 19, 2021 Report
H&M Mechanical is the best in the area for heating, air conditioning, and refrigeration. They are locally owned and have a stellar reputation. On time, super professional, and a good value for your money, you don't need to worry when working with this team. Recently Jesse Coleman and Joe Hashman installed a new furnace in our home. They were outstanding and it was a massive job. They were responsive, fast, and installed a new highly efficient thermostat. I would highly recommend this company.
Peter Wayne
Dec 20, 2020 Report
I have been using H&M for the last twenty years for my home and rental properties. Their technicians are always professions and do a great job at a fair price. They have excellent emergency response. When my water heater broke one night, they arrived the next day to install a new one, quickly and efficiently. Services: A/C system maintenance, Heating system installation, Install AC, Heating system maintenance