Engineering & Consulting for the Built Environment
360 Engineering, Inc. is a mechanical and plumbing engineering practice headquartered in Golden, Colorado. Founded in 2003, it delivers HVAC and plumbing design, prime engineering consulting, and energy and commissioning services for new construction, renovations, retrofits, and complex existing or historic facilities. Its engineers hold licenses in more than 45 states, supporting public and private sector clients across education, government, recreation, science and technology, and commercial markets.
Professional Engineer (PE) licensed in 45+ states · LEED AP Building Design + Construction (LEED AP BD+C) · ASHRAE High-Performance Building Design Professional (HBDP) · ASHRAE Building Energy Modeling Professional (BEMP) · AABC Commissioning Group (ACG) Certified Commissioning Authority (CxA)
Denise DihleFounder, President, Partner
Melissa KisickiDirector of Finance & Administration, Partner
Stacey RichardsonDirector of Business Development, Partner
Spencer RiouxDirector of Quality & Sustainability, Partner
Brennen GuyDirector of Technical Staff, Partner
Lexie ZimmermanDirector of Operations, Partner
Full-service mechanical and plumbing engineering for new construction, renovations, retrofits, and complex existing or historic buildings. The practice designs systems that balance budget, efficiency, comfort, safety, and sustainability.
High-performance HVAC system design balancing budget, efficiency, comfort, safety, and sustainability.
Plumbing system design including domestic water, waste, lab utilities, and specialty systems.
Assessment and modernization of aging HVAC and plumbing systems in operating, space-constrained, or historically significant buildings.
Lead consultant and project manager services coordinating multidisciplinary teams from early goal setting through construction and closeout, including schedule, budget, and risk management.
Guiding architectural and engineering teams through every phase to ensure collaboration, transparency, and shared accountability.
Proactive management of cost drivers, schedules, and construction coordination to achieve best-value project outcomes.
Comprehensive energy and commissioning services including energy audits, energy modeling, commissioning, retro-commissioning, and performance verification for new and existing facilities.
Whole-building energy modeling and energy audits to evaluate system options and support net-zero, electrification, and lifecycle cost goals.
Commissioning and retro-commissioning of HVAC and plumbing systems to verify systems perform as designed throughout their lifecycle.
Education · Government · Public Safety · Airports · Sports & Recreation · Historic Preservation · Research Facilities · Commercial · Parks & Open Space
Denver, CO · Airports · Client: Jacobs
Plumbing engineering services including plans, specifications, and construction administration for new B-East and C-East concourses at Denver International Airport. C-East features 530,000 SF with 16 gates; B-East includes 10 gates.
Denver, CO · Public Safety · Client: Handprint Architecture
Mechanical and plumbing system design for a 25,000 SF police station, incorporating specialized pressurization and air separation systems designed to support LEED Gold goals.
Highlands Ranch, CO · Public Safety
Mechanical and plumbing engineering services supporting the design of a municipal fire rescue station.
Denver, CO · Education · Client: DLR Group
An all-electric school facility designed with heat pump HVAC, electric domestic hot water, and induction kitchen equipment to achieve an EUI in the low 30s.