Engineering 
Design & Fabrication

Johnston Engineering is the Region’s Best Product Development Engineering Company. Serving Washington & All of the Pacific Northwest.

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Client Testimonials

Andy is an incredibly intelligent and conscientious engineer. He is a consummate individual and takes great care to deliver exemplary service. Andy is a fantastic man to work with, and I highly recommend him!

Ted S.

I have worked with Andy many times over the last 18 months. He is always courteous and quick to respond. His knowledge is broad and diverse. Very nice guy as well, I would highly recommend him.

John W.

Working with Andy has been a great experience. I brought my idea for a firearm retention device to Andy and he's taken it from just an idea to a mass-producible product ready for the market. He is incredibly well organized, always available, professional, and a great human being. I will definitely be working with him again!

Dylan E.

Andy did an excellent job stepping me through the process from start to finish. He was in constant contact and I would highly recommend him for your next project.

Clinton H.

Andy Johnston is great with people. His firm, Johnston Engineering, has a variety of services he provides, that are all delivered with speed and precision. But it’s his ‘people skills’ that allow him to stand out above the rest. His ability to connect with his clients and colleagues is a rare trait. I highly recommend Andy and his firm.

Chris W.

We're fortunate to have a firm that can confidently handle engineering design and analysis locally here in Spokane. I highly recommend this firm.

Victor O.

We Bridge the Gap Between Your Ideas and Reality

We Have Extensive Experience in a Wide Range of Industries

We Handle All Phases of the Design Cycle

Services We Provide

Prototype Design & Fabrication

Prototypes allow our clients to see, hold, feel and modify their products before committing to high volume manufacturing. We can help you with your patent search, prototype design. prototype engineering, prototype fabrication, prototype testing, and high-volume manufacturing.

Engineering & Design

At Johnston Engineering, we handle all parts of the design process. From start to finish, we take your idea from concept to manufacturing. We have considerable experience in a wide range of projects, including product development, heat transfer design, custom electro-mechanical systems, 3D CAD modeling, engineered systems fabrication and testing, and high-precision instruments.

Engineering Analysis

Engineering analysis saves time and money by ensuring that designs work as intended the first time without costly and time-consuming prototype iterations. Analysis can improve part safety, reliability and performance while minimizing weight and cost. We provide structural, thermal and fluid flow analysis using ANSYS Finite Element Analysis (FEA) and Computational Fluid Dynamics (CFD) software.

Why Choose Johnston Engineering

Andy Johnston, P.E. is the principal mechanical engineer of Johnston Engineering. He is a licensed Professional Engineer in Washington with over 60 years of combined product development and mechanical engineering design and analysis expertise. He has worked hard to create a talented, capable, and focused team. This team at Johnston Engineering has designed products for a wide range of industries, including biotechnology, energy storage, renewable energy, consumer products, military and aerospace electronics cooling, nuclear, sports equipment and food handling equipment.

We Have Over 60 Years of Combined Experience

We Offer the Best Services at a Competitive Price

Johnston Engineering is the region’s best product development engineering company. We provide the best design, engineering analysis, build and test services to ensure our customers success.  Our approach of integrated design and analysis ensures the quickest product development cycle and least number of prototype iterations which saves our customers time and money. We design, fabricate and deliver your product in a timely manner and at a competitive price.

Make Your Idea A Reality

Whether you need help building your idea from the ground up or with a small piece, Johnston Engineering has the skills and expertise to bring your idea to life. Fill out our form or give us a call to see how we can help.

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509.290.1034

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509.290.1034

We Bridge the Gap Between Your Ideas and Reality

At Johnston Engineering, we have over 60 years of combined experience helping our clients make their ideas a reality, all while using aerospace-grade materials and cutting-edge analysis to make sure your design works right every time.

We serve a broad range of clients in the biomedical, renewable energy, consumer product, pumped fluid systems, HVAC, thermal management, manufacturing, food handling equipment, firearms and energy storage fields.

We Have Extensive Experience in a Wide Range of Industries

We Handle All Phases of the Design Cycle

We handle all phases of the design cycle from concept to finished product. We will manage your project design, schedule, budget, fabrication and test. We partner with local electrical engineers for circuit board design and software development for integrated electrical-mechanical devices.

At Johnston Engineering, we have over 40 years of combined experience helping our clients make their ideas a reality, all while using aerospace-grade materials and cutting-edge analysis to make sure your design works right every time.

We serve a broad range of clients in the biomedical, renewable energy, consumer product, pumped fluid systems, HVAC, thermal management, manufacturing, food handling equipment, firearms and energy storage fields.

We handle all phases of the design cycle from concept to finished product. We will manage your project design, schedule, budget, fabrication and test. We partner with local electrical engineers for circuit board design and software development for integrated electrical-mechanical devices.

Spokane Office

3009 S. Mt Vernon St. Suite 4
Spokane, WA 99223

509.290.1034

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Featured Clients

Designed Right the First Time

We are the only regional product development company with truly integrated design and engineering analysis by utilizing 3D CAD modeling.

Save Time & Money

Engineering analysis saves you time and money and ensures the design is right the first time. We offer FEA & CFD services.

Stress-Free Process

Project management without the stress. We manage the entire team, buy the hardware, assemble and test your product.

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