This month, we’re shaking things up for something a little more festive—our team’s favorite holiday cocktail hour treats. From family traditions to new seasonal favorites, we’re excited to share the recipes and stories that bring us joy this time of year. We hope you’ll try a few, savor the flavors, and let us know if any make it into your own holiday lineup!
We look forward to working with you in 2026!
As winter approaches, building owners and commercial service contractors must ensure that heat pump HVAC systems are ready to perform efficiently in colder conditions. Unlike traditional furnaces, heat pumps operate by transferring heat rather than generating it, making them highly efficient—but also sensitive to outdoor ambient conditions. Proper winter preparation not only protects your investment but also ensures occupant comfort and energy savings.
Heat pumps work by extracting heat from the outside air—even in cold weather. However, their efficiency can drop as temperatures fall, especially in older or improperly maintained systems. Cold climate heat pumps are designed to perform better in freezing conditions, but all systems benefit from seasonal maintenance.
For buildings in colder regions, consider upgrading to a cold climate heat pump or adding supplemental heating. Dual-fuel systems, which combine a heat pump with a gas furnace, offer flexibility and efficiency. As noted above, make sure to include compensating auxiliary heat for defrost cycles if necessary, and keep the area around the outdoor unit clear of snow and debris to maximize unit performance and efficiency.
Winterizing your heat pump system reduces emergency repair risks, lowers energy bills, and extends equipment life. For engineers and contractors, specifying systems with winter readiness in mind—such as variable-speed compressors and smart thermostats—can enhance building performance and client satisfaction.
We recently had our Strategic Leadership Retreat and reflected on the past year. We identified that we’ve experienced meaningful growth—not in numbers, but in depth, capability, and direction. As our client base expands and our work continues to speak for itself, we’re reminded that real growth isn’t only about the bottom line — it’s about evolving.
A cornerstone of our progress has been the continued development of our leadership. We’ve invested in empowering current leaders while actively nurturing emerging ones. Strong leadership doesn’t happen by accident—it requires intention, mentorship, and space to grow. This mindset has helped us create a culture where leaders at every level can take initiative, drive results, and bring others along with them.
Looking forward, we’re focused on leveling up the entire firm. That means raising the bar on how we work, how we lead, and how we deliver. We’re refining systems, deepening expertise, and doubling down on collaboration. Growth is only meaningful if everyone rises with it—so we’re building an environment where people are challenged, supported, and inspired to reach their next level, too.
This next chapter isn’t just about doing more. It’s about doing the hard stuff better, together.
Denise M. Dihle, PE
President, Partner
Denver Public Schools (DPS) set a new standard with the Responsive Arts & STEAM Academy (RASA), a ground-up, 120,000-square-foot school designed and built in two phases. Phase 1 opened in August 2024 for ECE through 5th grade, followed by Phase 2 in August 2025, expanding the school through 8th grade. From the start, the project team planned ahead—accounting for future mechanical loads, water heater capacity, and even sanitary sewer piping depth—ensuring a seamless expansion. DLR Group led the architectural design, with 360 Engineering providing mechanical and plumbing engineering and consulting expertise.
The design team was challenged to create a highly energy-efficient building. Energy modeling was used to evaluate three mechanical system options:
With 360 Engineering’s input and guidance, the team compared installation cost, energy efficiency (measured in Energy Use Intensity, or EUI, given as a measure of energy use per square foot per year), maintenance needs, and long-term operating costs. The VAV RTU system emerged as the best fit—offering strong efficiency, the lowest upfront cost, and familiarity for DPS’s facilities staff.
The system incorporates air-side economizers and energy recovery wheels to improve performance further, taking advantage of Colorado’s dry climate. Smart controls also monitor CO₂ levels in each space, adjusting outdoor air intake to strike the right balance between energy savings—less outdoor air to heat or cool—and indoor air quality, ensuring efficient operation while keeping classrooms filled with fresh air to support active, engaged learning.
Designed with the future in mind, RASA is the district’s first all-electric school: heat pump technology powers the mechanical systems, domestic water heating is electric, and even the kitchen ranges and ovens are induction.
Now, more than a year after RASA’s grand opening, with the Phase 2 expansion substantially complete, early performance data is beginning to prove the success of the design and construction efforts. While initial energy use reflects commissioning, ongoing construction, and partial occupancy, adjusted metrics show the building’s EUI in the low 30s—right on target with original energy modeling and well below Denver’s K–12 benchmark of 48.1. RASA stands as a safe, energy-efficient learning environment, ready to support and inspire the next generation.
The stakes are higher when designing HVAC and plumbing systems near the ocean. Salt-laden air, high humidity, and corrosive conditions can significantly reduce the lifespan and performance of mechanical equipment and fixtures. Whether you’re working on a marine research facility, a waterfront national park, or a retail store with water views, understanding how to protect your HVAC systems in these environments is essential.
Salt in the air accelerates corrosion, especially on exposed metal components like condenser coils, piping, and ductwork. Over time, this can lead to:
When you are near the ocean, protecting your condenser and/or evaporator coil is essential to ensuring the longevity of your equipment. Without this, corrosion can occur at your coils, reducing the equipment’s lifespan.
Beyond coils, all exposed materials should be chosen for their resistance to corrosion:
Designing HVAC systems for marine environments isn’t just about resisting rust—it’s about ensuring long-term performance, reliability, and safety. By specifying the right coatings, materials, and installation practices, you can protect your systems from the harshest coastal conditions.
360 Engineering, a full-service mechanical engineering firm founded in 2003 by Denise Dihle and working on projects of all sizes in Colorado and across the U.S., has announced that the firm’s senior leadership team has joined Dihle as equity partners. The senior leadership team is comprised of Melissa Kisicki, CDFA, Stacey Richardson, CPSM, Spencer Rioux, PE, Brennen Guy, PE, and Lexie Zimmerman, PE. The move reflects 360 Engineering’s long-standing commitment to growing from within, ensuring continuity for the firm’s clients, and building a strong future grounded in shared vision and values.
“I established 360 Engineering as a firm that would be able to provide customized engineering solutions and personalized customer service to all our clients, and that will continue to be the case as this outstanding and highly respected team of professionals join me as equity partners,” said Dihle who has been recognized by industry organizations, peers and clients as a progressive leader in mechanical engineering, design and construction administration throughout her 30-plus year career. “These individuals have worked side by side with me and our entire team for years and promise to maintain the trust and results 360 Engineering has achieved with our clients. It’s an exciting time as we continue to look forward to delivering the same outstanding results on behalf of the companies and projects we represent.”
360 Engineering will maintain the firm’s SBE/MWBE (Small Business/Woman-Owned Business) status. Dihle will continue in her role as president and principal-in-charge.
The senior leadership team’s deeper investment in the firm after years of service signals not just confidence in where 360 Engineering is going, but a commitment to the people and partnerships that have been integral to the firm’s growth and success.
“Our clients’ experience with 360 Engineering remains unchanged and grounded in the same values, quality, and reliability they’ve always trusted,” continued Dihle. “We look forward to continuing in our status as an award-winning, locally and nationally recognized Woman-Owned Small Business. We’re excited about what the future holds and deeply grateful for the continued trust of our clients and colleagues.”
Media:
Stacey Richardson
720-619-1524
When it comes to HVAC design, humid climates present unique challenges that require thoughtful planning and precise execution. Whether you are working in coastal regions or cities with high summer humidity, understanding how to manage moisture is critical for comfort, efficiency, and building longevity. In this post, we’ll explore essential considerations for designing HVAC systems in humid environments.
Equipment SizingIn humid climates, your cooling coil must do double duty—cooling the air and removing moisture. This means:
Air DistributionPoor air distribution can lead to condensation and comfort issues. Keep these tips in mind:
InsulationThe location of insulation on the ductwork and piping systems shall be thoughtfully considered to avoid condensation and mold growth while balancing acoustic needs. The following should be considered in the equipment specifications:
Designing HVAC systems in humid climates requires more than just standard cooling calculations. From equipment sizing to insulation and material selection, every detail matters when moisture is in play.
By following these best practices, you can ensure your systems perform reliably, maintain occupant comfort, and withstand the challenges of high humidity.
As summer comes into full swing and temperatures begin to climb, commercial and industrial facilities face increasing pressure to ensure their HVAC systems are operating at peak performance. One of the most critical components in large-scale cooling systems is the chiller. Whether you’re managing a hospital, data center, office complex, or manufacturing plant, upgrading your chiller system before the summer heat hits can make a significant difference in energy efficiency, occupant comfort, and operational reliability.
Here’s what you need to know before investing in a chiller system upgrade.
Before considering an upgrade, conduct a thorough performance assessment of your existing chiller system. Look for signs of inefficiency such as:
Modern chillers are significantly more efficient than those installed even a decade ago. If your system is more than 15 years old, an upgrade could reduce energy consumption significantly.
Chiller systems should be sized based on actual cooling load demands, not outdated or estimated figures. Consider the actual occupancy and usage of your building, as well as any other facility upgrades that may have been implemented previously (such as window replacement, improved insulation, even office equipment moderniziations). Over- or under-sizing can lead to inefficiencies, increased wear and tear, and higher operational costs. A professional load analysis will help determine the optimal capacity and configuration for your facility’s current and future needs.
Today’s chiller systems come equipped with advanced technologies that offer superior performance and energy savings:
Incorporating these technologies can also help your facility qualify for utility rebates and sustainability certifications like LEED O+M.
Upgrading your chiller is only part of the equation. Integrating it with a modern Building Automation System (BAS) allows for real-time monitoring, predictive maintenance, and optimized performance. Smart controls can adjust chiller operation based on occupancy, weather forecasts, and energy pricing, further enhancing efficiency.
Chiller upgrades can be complex and may require temporary system shutdowns. Planning ahead is crucial to minimize disruption. 360 can help building owners navigate these challenges, working with vendors, contractors, and facility staff to:
A well-executed upgrade plan ensures a smooth transition and long-term performance benefits.
While upfront costs are important, the total cost of ownership—including energy use, maintenance, and lifespan—should guide your decision. A slightly more expensive chiller with higher efficiency and lower maintenance needs can pay for itself in just a few years.
Choosing the right HVAC design engineering partner is key to a successful chiller upgrade. 360 Engineering is a firm with:
Upgrading your chiller system before the summer heat arrives isn’t just a smart move—it’s a strategic investment in your facility’s performance, sustainability, and bottom line. With the right planning and expertise, you can ensure your building stays cool, efficient, and resilient all season long.
Need help evaluating your chiller system? Contact our team of HVAC design experts today to schedule a consultation.
In today’s world of high-performance buildings and sustainable design, one technology is quietly transforming how we think about indoor air quality and energy efficiency: the Energy Recovery Ventilator (ERV).
At its core, an ERV is a smart system that captures the energy from outgoing stale air and uses it to condition incoming fresh air. This process not only reduces the load on heating and cooling systems but also ensures a consistent flow of clean, filtered air throughout the building, critical for both comfort and occupant health.
Whether it’s a high-rise office, school, hospital, or even a multi-family residence, integrating an ERV into the mechanical design can make a measurable difference in performance and sustainability.
At 360 Engineering, we specialize in designing HVAC systems that work smarter—and ERVs are one of the most effective tools in our playbook.
The National Renewable Energy Laboratory (NREL) is a leading research facility on clean energy and alternative fuel sources. This year, the Flatirons Campus and Wind Facility are completing their first ground-up building construction in several years, led by the HDR team. The new state-of-the-art building will act as the central control facility for all research efforts on the Flatirons Campus.
Modernized building construction requires a modernized mechanical and plumbing system to complement the building design. During the early phases of design, five (5) different mechanical systems were considered, with a wide range of factors including ease of maintenance, energy efficiency, and utilization of heating and cooling utilities. Ultimately, after energy modeling, lead time considerations, and cost considerations, NREL opted to proceed with the first Variable Refrigerant Flow (VRF) mechanical system on their Flatirons Campus.
The VRF system includes a packaged heat pump Dedicated Outdoor Air Unit (DOAS) with a heat recovery wheel for low-energy preconditioning of the building. The DOAS provides ventilation air to each indoor fan coil unit, easily complying with code requirements for the varied room types within the building. The building hosts conference spaces, electronics labs, a data center, and general office space.
The control facility was optimized to maximize floor space, presenting the unique challenges of configuring mechanical and plumbing systems in the limited plenum space. The team utilized REVIT during design to model systems beyond the 2D of CAD and capture any constructability conflicts early on.
The building is nearing the end of construction and the final stages of mechanical commissioning, with an occupancy slated for April. The unique mechanical and plumbing integration of exposed versus concealed aspects balances with the architectural aesthetics to create a truly beautiful building that is both pretty to look at and functions as a high-tech research facility. It’s great when these two design objectives find a way to cooperate!
