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Interface Engineering, Inc.

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www.interfaceengineering.comUpdated

Interface Engineering is a 100% employee-owned, multidisciplinary mechanical and electrical engineering firm delivering high-performance, sustainable buildings.

Overview

Interface Engineering is a multidisciplinary mechanical and electrical engineering consultancy known for visionary sustainable design, building science tools, and commissioning services. The firm serves clients through the entire design, construction, and operations process, delivering creative engineering solutions for high-performance buildings. Since its founding in 1969, Interface Engineering, Inc. has built a reputation for technical problem solving and engineering innovation and advocates smart, efficient, and sustainable approaches for future generations. The organization emphasizes mentorship, continuing education, and the use of advanced technologies to create optimal environments for life.

Mission statement

Our mission is simple: to help build optimal environments for life.

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What we offer

Mechanical Engineering

Service

Delivering high-performance, sustainable mechanical engineering solutions to enhance building efficiency.

Pricing not published

www.interfaceengineering.com/services/mechanical-engineering

Electrical Engineering

Service

Provides innovative electrical engineering solutions for sustainable design.

Pricing not published

www.interfaceengineering.com/services/electrical-engineering

Plumbing Design

Service

Deliver integrated plumbing solutions that optimize water conservation and efficiency.

Pricing not published

www.interfaceengineering.com/services/plumbing

Building Technologies

Service

Enhance building performance through innovative technology integration.

Pricing not published

www.interfaceengineering.com/services/building-technologies

Commissioning Services

Service

Deliver reliable, efficient building operations and energy savings.

Pricing not published

www.interfaceengineering.com/services/commissioning

Energy Consulting

Service

Optimizes building design for energy efficiency, cost savings, and sustainability.

Pricing not published

www.interfaceengineering.com/services/energy-consulting

Fire/Life Safety

Service

Ensuring the safety of buildings and occupants through comprehensive fire and life safety solutions.

Pricing not published

www.interfaceengineering.com/services/fire-life-safety

Lighting Design

Service

Provides imaginative and sustainable lighting solutions for various architectural contexts.

Pricing not published

www.interfaceengineering.com/services/lighting-design

Market segments

Market size by segment

Growth potential (CAGR)

Commissioning and performance optimization

3.5 Billion USD6.5% CAGR

Services to verify, test, and optimize system performance across design, retro-commissioning, and diagnostic health assessments to reduce failures and improve efficiency.

Products: Commissioning Services, Building Technologies, Mechanical Engineering

Energy modeling and sustainability consulting

4 Billion USD10% CAGR

Early-stage energy analysis, lifecycle cost assessment, and renewables integration to drive low‑energy design, compliance, and incentive capture.

Products: Energy Consulting, Mechanical Engineering, Electrical Engineering, Plumbing Design

Electrical and power systems services

100 Billion USD4.5% CAGR

Design, installation and maintenance of electrical systems, switchgear, generators, lighting and VFDs for commercial and industrial facilities.

Products: Electrical Engineering, Building Technologies, Commissioning Services

Fire protection design and compliance

21.3 Billion USD6.8% CAGR

Design, installation, testing and maintenance of fire protection and sprinkler systems, including backflow protection and regulatory testing to meet local and national safety codes.

Products: Fire/Life Safety, Commissioning Services, Building Technologies

Lighting design and photometric analysis

0.4 Billion USD7.5% CAGR

Tools for creating lighting layouts, performing photometric calculations and compliance checks, and generating automated reports for lighting professionals and architects.

Products: Lighting Design, Building Technologies, Energy Consulting, Mechanical Engineering

More information about our offering

Mechanical Engineering

Mechanical engineering services for high-performance, energy-efficient buildings. Interface Engineering designs and optimizes building systems, applying strategies such as renewable energy integration to balance performance with reduced power use.

Pricing not published

  • Integrate Renewable Energy Solutions
    Our team implements renewable energy strategies to enhance system efficiency, reduce environmental impact, and ensure cost-effectiveness in building designs.
  • Plan Financially Sustainable Solutions
    Our analyses help in predicting long-term energy costs and savings, facilitating informed decision-making for building projects.
  • Optimize Building Efficiency
    We implement advanced control systems that enhance building operation, providing real-time monitoring and adjustment capabilities for optimal performance.
  • Maximize Energy Efficiency
    By strategically designing thermal mass systems, we enhance energy efficiency and interior comfort in buildings.

Electrical Engineering

Electrical engineering services delivering efficient, integrated electrical systems and support for sustainable building design.

Pricing not published

  • Design Efficient Electrical Systems
    Our engineers specialize in creating seamless electrical systems that prioritize efficiency and sustainability, ensuring optimal performance and reduced operational costs.
  • Tailor Power Distribution Systems
    Focuses on creating custom solutions for effective power distribution, ensuring reliable energy delivery across facilities.
  • Optimize Electrical System Performance
    Ensures that all components are installed correctly and perform as intended, maximizing system efficiency and sustainability.
  • Monitor Power Quality
    Implement continuous monitoring solutions to detect and mitigate potential power quality issues, enhancing system reliability and performance.
  • Design Renewable Energy Systems
    Expertise in integrating solar technologies into electrical designs, promoting sustainable energy practices and reducing utility costs.

Plumbing Design

Plumbing design capabilities covering simple to sophisticated projects. We design efficient, integrated plumbing systems with advanced solutions for water conservation, reclamation and treatment, and we have expertise in specialized plumbing for process, manufacturing, and medical facilities.

Pricing not published

  • Capture Rainwater Smartly
    Develop innovative rainwater harvesting solutions that reduce reliance on municipal water supply and enhance sustainability in building design.
  • Ensure Efficient Distribution
    Design robust water and waste distribution systems to ensure efficiency, reliability, and compliance with all regulations.
  • Conserve Water Efficiently
    Implement advanced greywater systems that minimize water usage and maximize sustainability for various projects.
  • Recycle Water Systems
    Implement advanced treatment systems that reclaim and recycle water, significantly reducing overall consumption and environmental impact.
  • Specialized Plumbing Design
    Provide unique plumbing solutions tailored for process, manufacturing, and medical facilities, ensuring operational efficiency.
  • Utilize Solar Energy
    Incorporate solar thermal systems to efficiently harness solar energy for heating applications, promoting energy conservation.

Building Technologies

Building Technologies focuses on integrating technology systems and improving building performance through commissioning, with a track record of better operation and air quality.

Pricing not published

  • Optimize Building Efficiency
    Implementing advanced building automation systems to manage and control HVAC, lighting, and other systems for improved energy efficiency.
  • Enhance Safety and Security
    Integrating high-quality electronic security systems to protect building assets and occupants.
  • Improve Emergency Response
    Installing reliable emergency communication systems to enhance response times and safety within buildings.
  • Facilitate Engaging Presentations
    Designed to create seamless audiovisual experiences that enhance communication and engagement in various environments.
  • Support Reliable Connectivity
    Designing robust telecommunications infrastructure to ensure reliable communication and data transfer.
  • Enable Seamless Connectivity
    Designing and implementing efficient wireless networks for flexible and mobile user connectivity.
  • Create Effective Communication
    Providing custom paging and intercom solutions for seamless communication in various settings.

Commissioning Services

Commissioning services ensure building systems are installed and functioning properly, delivering energy savings and other benefits. Interface Engineering brings multi-disciplinary expertise to commissioning, to improve system operation and indoor air quality.

Pricing not published

  • Facilitate LEED Certification
    Assist building owners in meeting sustainability goals by incorporating LEED standards into the commissioning process, enhancing building performance and resource efficiency.
  • Identify Energy Savings Opportunities
    Implement actionable strategies that help clients reduce energy consumption and operational costs through detailed assessments.
  • Optimize Building Performance
    Enhance functionality and efficiency for both new and existing structures, ensuring all systems are operating as intended.
  • Consistent Quality Support Anywhere
    Clients can expect reliable and high-quality commissioning services regardless of where their projects are located.
  • Maximize System Efficiency
    Achieve optimal performance in HVAC and other systems, leading to improved comfort and reduced energy costs.
  • Empower Staff for Effective Management
    Equip facility managers with the knowledge and skills necessary for effective building maintenance, promoting long-term efficiency.
  • Maintain Long-term Operational Excellence
    Regular assessments and adjustments help sustain high performance and energy efficiency throughout the lifespan of the building.
  • Ensure Life Safety Compliance
    Confirm that smoke control systems function correctly to protect occupants during emergencies, adhering to code requirements.

Energy Consulting

Energy Consulting identifies energy and cost-saving strategies early in design using advanced modeling and economic analysis. It employs tools like eQuest, DOE-2, IES, TRACE 700, EnergyPro, and conducts energy audits and daylighting analyses to inform design decisions.

Pricing not published

  • Utilizes Advanced Simulation Techniques
    Advanced modeling tools predict building energy performance, allowing for informed design choices that enhance energy efficiency.
  • Identifies Financial Incentives
    Comprehensive energy audits reveal avenues for savings and available incentives, enhancing the project's financial viability.
  • Enhances Decision-Making with Visualizations
    By involving energy consulting from the start, clients can visualize and understand the impact of design decisions on sustainability.
  • Facilitates Comprehensive Data Gathering
    Advanced data collection tools ensure precise monitoring and analysis of building performance metrics, optimizing energy use.

Fire/Life Safety

Fire/Life Safety services design, review, and implementation to protect buildings and occupants, covering fire detection, alarm and suppression, code compliance, testing, and special suppression systems.

Pricing not published

  • Design Comprehensive Systems
    Expertly design fire safety systems to detect, alarm, and suppress fires, ensuring safety and compliance.
  • Ensure Code Compliance
    Conduct detailed reviews to ensure all safety plans meet local codes and regulations.
  • Review Contractor Designs
    Thoroughly review contractor plans to validate design effectiveness and compliance with safety standards.
  • Program and Commission Systems
    Implement and optimize systems to ensure they operate as intended for maximum safety.
  • Conduct Confidence Testing
    Perform rigorous testing to ensure fire systems function effectively during emergencies.
  • Implement Specialized Systems
    Design and install advanced suppression systems tailored to specific risks and environments.

Lighting Design

Lighting Design extends beyond luminaire placement to give form; the team combines creative design with advanced technologies, sustainability, and daylighting to express clients’ architectural vision.

Pricing not published

  • Optimizes Lighting For Businesses
    Our commercial solutions enhance the functionality, aesthetics, and energy efficiency of business environments.
  • Showcases Artistic Features
    Specialized designs enhance the visual impact of artworks and architectural features, creating engaging spaces.
  • Promotes Wellbeing In Healthcare
    Our healthcare lighting solutions improve patient comfort and operational efficiency while meeting stringent regulatory standards.
  • Enhances Comfort In Aged Care
    Our aged care lighting designs promote a comforting atmosphere that assists residents with vision and orientation.
  • Enhances Learning Environments
    Designed to support various educational functions, ensuring optimal visibility and engagement.
  • Enhances Outdoor Spaces
    Our designs ensure safety and aesthetic appeal in public and private outdoor areas.
  • Provides Strategic Lighting Solutions
    Long-term plans ensure cohesive and effective lighting strategies that meet evolving project goals.
  • Delivers Tailored Lighting Solutions
    We create unique luminaires that meet specific project requirements while aligning with the overall design vision.
  • Improves Light Management
    Our control systems enhance energy efficiency and customization, adapting lighting to specific needs.
  • Transforms Living Spaces
    Our residential solutions enhance the aesthetic and functional aspects of homes, creating inviting environments.
  • Visualizes Lighting Effects
    We use advanced modeling techniques to visualize design concepts and expected outcomes before implementation.
  • Updates Existing Lighting Systems
    We improve older installations with modern solutions that enhance performance and efficiency.

Sources

Methodology and sourcing behind the figures and links shown above.

Commissioning and performance optimization

No explicit size for commissioning & performance-optimization services was present in the provided results. I estimated a global market of roughly $3.5B with ~6.5% CAGR by analogy to related ‘optimization’ services markets in the search results (which show market values and mid-to-high single- to double-digit CAGRs) and by applying domain knowledge that commissioning/retro‑commissioning is a narrower professional services niche within building/industrial efficiency and facility services. Rationale: commissioning is a specialized subset of broader optimization and retrofit markets (smaller than platform/software optimization markets cited), yet benefits from steady demand from building codes, energy-efficiency retrofits, ESCO activity, and asset‑performance monitoring — supporting a moderate, sustained CAGR rather than the faster growth seen in software/platform segments.

Energy modeling and sustainability consulting

None of the provided search results contained explicit market‑size or CAGR data for this segment. Using internal market‑hierarchy knowledge: energy modeling and sustainability consulting is a specialized subset of the broader sustainability/energy consulting and building‑performance services markets. Global sustainability and energy consulting services are commonly estimated in the low tens of billions USD; the early‑stage energy analysis/lifecycle cost assessment/renewables‑integration niche typically represents a single‑digit‑billion USD slice. I estimate the segment at about $4.0B globally, driven by demand from building owners, developers, and regulators for decarbonization, code compliance, incentive capture, and renewables integration. Growth potential (CAGR) is ~10% reflecting accelerating regulation, corporate ESG commitments, electrification and retrofit activity, and increasing adoption of energy‑modeling tools and services.

Electrical and power systems services

No explicit market-size or CAGR data was present in the provided search results. Using internal industry knowledge: the broader U.S. electrical contracting and services sector is on the order of many tens to low hundreds of billions USD annually. Focusing on commercial and industrial (design, installation, maintenance of switchgear, generators, lighting, VFDs, etc.), a reasonable estimate is roughly $100B (U.S. annual market). Growth potential is driven by building electrification, energy-efficiency retrofits, VFD and motor upgrades, grid-modernization and standby/backup power demand; these support a mid-single-digit CAGR. The estimate reflects a conservative midpoint of industry revenue splits (residential vs. commercial/industrial) and expected demand from decarbonization, automation, and replacement cycles.

Fire protection design and compliance

Primary sources show the global fire protection systems market at about USD 85B (2025) with a 6.8% CAGR; sprinkler systems including design & installation account for a multi‑billion submarket (~USD 15.4B). Using these published totals and the IFSA/region data as benchmarks, I estimate design, installation, testing and compliance (services-focused portion across fire protection and sprinkler systems) represents roughly 20–30% of the overall market. Applying a midpoint service share (~25%) to the USD 85B market yields an estimated segment size of ~USD 21.3B in 2025. The growth potential is aligned with the published global CAGR (6.8%), reflecting regulatory-driven recurring service demand and retrofit activity.

Lighting design and photometric analysis

Search results provided no explicit data for lighting-design or photometric-analysis software. Estimate derived from internal industry knowledge: lighting-design/photometric tools are a small niche within the much larger global lighting and AEC software markets. Factors considered: number of lighting professionals and consultancies, prevalence of a few dominant/low-cost tools (DIALux, Relux, AGi32, Photopia, plugins), recurring license and service revenues, and growing drivers (LED retrofit/specification, smart lighting controls, BIM integration, tighter energy/regulatory compliance). Combining typical per‑user or per‑firm software spend, enterprise purchases, and services/support leads to an estimated current annual market ~USD 0.3–0.5B (rounded to 0.4B). Adoption and integration trends imply moderate growth; estimated CAGR ~6–9% (midpoint 7.5%). No explicit market-size sources were available in the supplied search results.

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