Engineering Dedicated to Your Success
Ramirez, Johnson, and Associates is a full service engineering firm that provides building systems design, commissioning, and engineering solutions to meet the needs of any project. We offer designs that are efficient and appropriate for the building’s owners, occupants, and staff. Whether you’re an architectural firm or a mom and pop shop starting a business for the first time, RJA is dedicated to building project success and strong client relationships through open communication and responsive design. Plus, we’re a Certifiably Green Denver company, which means we’re dedicated to environmentally friendly practices and high-performance design.
Scope of Services
The scope of services RJA can provide includes the design of HVAC, plumbing, fire protection, medical gas and temperature controls/automation. We embrace the unique challenges each project provides and strive to design systems that are energy efficient and integrate seamlessly with the building architecture all while being mindful of the client’s budget.
Mechanical, Electrical, & Plumbing
Ramirez, Johnson & Associates, LLC (RJA) provides mechanical, electrical and plumbing design services to our clients through a collaborative, team oriented approach. Our engineers are able to provide a wide variety of mechanical system design solutions and considerations to meet the needs of any project.
The type of project experience RJA can bring to the table includes solutions for commercial, retail, food service, K-12 educational facilities, multi-family housing, healthcare, historic preservation, renovation, hospitality, government, industrial, laboratory and tenant finish.

M/WBE, DBE, SBE, EBE Certified and Licensed in These States:


Commissioning
Commissioning is a systematic and documented process of verifying that all of a building’s systems, including mechanical/HVAC, lighting, electrical, plumbing and specialty systems work as they were intended by the design engineers and as required by the building owner.
RJA’s commissioning agents have design and mechanical construction backgrounds to provide systematic and practical inspections of the installation and operation of these systems, ensuring all of the equipment operates in an integrated manner, improving reliability, maintainability, and overall efficiency.
RJA can provide commissioning services for new and existing buildings, through retro-commissioning and re-commissioning.
Systems and equipment commissioned by our team include:
- large scale VAV air handling systems,
- industrial condensing water system,
- split system A/C systems,
- steam and heating water boiler systems,
- domestic hot water systems,
- daylight harvesting lighting systems,
- occupancy sensor controlled lighting systems and photocell exterior lighting systems.
Additionally, we are experienced with:
- fire alarm systems,
- hospital medical gas systems (bulk and local),
- nurse call systems,
- solar thermal and solar photovoltaic renewable energy systems,
- emergency and back-up power systems,
- and mission critical cooling systems.
Sustainability Consulting and Energy Modeling

Energy modeling is a powerful tool that can be used to quantify a building’s energy use and the cost savings associated with various design options. Throughout the design process the simulation is used to help inform and shape the project’s design features. Each design alternative’s performance may be compared individually or in concert to optimize the building. Additionally, energy modeling is a critical tool for documenting compliance with State and Local energy codes and modern building rating systems (LEED, Green Globes, etc.).
Our modeling services include:
- Full Building Energy Modeling
- Identify and Prioritize Energy Conservation Measures
- High Performance Design and Energy Consulting
- Local Utility and Government Rebates
Testimonials

Contact Our Denver Team
We consider projects of all sizes from across the state of Colorado, as well as in the states of Utah and Wyoming. Talk to our team to see if RJA is right for your next engineering project.
OUR CERTIFICATIONS
- Professional Engineering
- MBE, DBE, SBE, EBE
- Member of the AABC Commissioning Group
- CXA Certified Commissioning Agents
- Certifiably Green Denver
OFFICES & CONTACT