Assisting clients and projects in reaching all-electric, net-zero status
CONTACT US
UC Berkeley Hildebrand Hall HVAC Modernization
Six story laboratory building at UC Berkeley.

OUSD Claremont Multi Purpose Building
New multipurpose building with adjoining all electric kitchen, under construction on Oakland Unified School District’s Claremont Middle School campus.

LBNL Building 84 Electrification
Persistent entrainment of combustion exhaust at LBNL’s Building 84 resulted in a desire to electrify building 84’s HVAC and Plumbing systems.

Laney College Theater Renovation
Major renovation of an existing 4 story Theater and classroom building on Laney College’s Campus in Oakland, California.
About Us
Alter Engineers was founded by passionate engineers who have a history of collaboration in HVAC and plumbing design for High Performance and Zero Net Energy and water building designs. The company was created out of the desire to make the team’s vast experience in low energy and water building systems attainable to a wider audience with a focus on the greater San Francisco Bay Area.
OUR PARTNERS
Our Services
Our approach and expertise together help projects genuinely excel. We have extensive experience designing Zero Net Energy, LEED, and other high-performance building rating systems.
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Engineer of record for mechanical and plumbing
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Design drawing creation (full design)
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MEP concept development
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Master Planning
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Building automation/control
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LEED credit documentation (mechanical plumbing)
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CHPS
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ZNE
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Greenpoint
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Title 24
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Passive House
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ILFI
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Energy Modeling
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Energy incentive calculations
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High level renewable energy analysis
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Fire protection design build services
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Utility/Policy consulting

OUR SOLUTIONS
Fully Electric Design Without a Natural Gas Connection
Together, we have experience specializing in the design of Zero Net Energy and water buildings as well as LEED and other high-performance building rating systems. With a long history of working in the state of California, our team is well-versed in Title 24 and CalGreen requirements. We have comprehensive experience in various delivery methods, feasibility studies, and master planning. Our team specializes in energy modeling, which is extensively used in all parts of the design process to ensure our designs feature optimized efficiency.
TESTIMONIALS
Our Team

Shannon Allison
Principal, Mechanical Design

Stefan Gracik
Principal, Building Performance Engineer

Matthew Dehghani
Principal, Mechanical Engineer

Sydney Santos
Plumbing & Water Resources Engineer

Brian Croshal
Plumbing & Fire Protection
MUSINGS
” This building should be naturally and mechanically ventilated. Having a building naturally ventilated creates a better experience. People like to feel that fresh breeze, it is invigorating. Its not just about energy. When it is not nice outside, you can use mechanical ventilation. At that point, people don’t want to be outside, they will appreciate being in a condition space. ”
Shannon Alison
01/14/2022
” People want radiant heat, they just don’t know anywhere to get it besides fireplaces. ”
Stefan Gracik
09/12/2018
” In the last 15 years our industry has experienced a technological revolution. Suddenly electrification is easy, with numerous technology types available. Now the question becomes: what technology fits the best, and which ensures the building has a low (or even positive) impact on the environment. ”
Matt Dehghani
08/24/2022