Prasino Engineering, LLC

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Prasino Engineering, LLC Prasino Engineering, LLC is a Professional Design and Consulting firm with over 30 years of industry experience. No job is too small.

We are a Professional Design and Consulting firm specializing in healthcare, higher education, K-12, data centers, restaurants, tenant build-outs, roadway lighting, etc. We can help meet your facility needs be it new construction, renovation, understanding existing infrastructure capacities, code compliance, etc.

🏢 The first building performance standard deadlines have passed. Reporting was just the beginning.As building performanc...
10/15/2026

🏢 The first building performance standard deadlines have passed. Reporting was just the beginning.

As building performance standards move into their next compliance cycles, the focus is shifting from benchmarking and reporting to achieving measurable energy reductions.

According to Facilities Dive (October 5, 2026), several cities have moved into second compliance cycles, while other jurisdictions continue to refine their requirements and incentives.

What does this mean for building owners and facility managers?

🔎 Measure first. Benchmarking identifies where your building stands, but it doesn’t explain why energy is being wasted.

⚙️ Investigate next. Existing building commissioning and retrocommissioning can uncover opportunities in control sequences, equipment scheduling, economizer operation, and simultaneous heating and cooling.

📊 Invest strategically. Trend analysis and functional testing can identify operational improvements before committing to major equipment replacements.

At Prasino Engineering, we believe that better building performance starts with understanding how your systems actually operate. The right investigation can reveal opportunities to improve efficiency, reduce energy waste, and make more informed capital investment decisions.

💬 Let’s discuss: For buildings subject to performance standards, how much of your energy savings comes from controls and operational improvements versus equipment replacement?

📌 Read the full article from Facilities Dive:
⁠Building performance deadlines pass, new compliance cycles begin

💧 A DOAS can hit design dry bulb—and still fail on dew point.ASHRAE has opened public review on Standard 198P, the metho...
10/06/2026

💧 A DOAS can hit design dry bulb—and still fail on dew point.

ASHRAE has opened public review on Standard 198P, the method of test for rating DX Dedicated Outdoor Air Systems (DOAS) for moisture removal capacity and moisture removal efficiency.

Why does this matter in the field?

DOAS units often handle ventilation air and a significant portion of the latent load in today’s building designs. The published moisture-removal performance is part of what designers rely on when selecting and sizing equipment—and it ultimately matters when that equipment is evaluated during functional performance testing.

When we’re testing DOAS performance, dry bulb temperature is only part of the story. We should also be looking at:

• Leaving-air dew point at design and part-load conditions
• Outdoor airflow verified independently of the control signal
• Reheat and bypass behavior at low load
• Whether the unit is actually delivering the expected latent performance

Because latent performance is where indoor air quality, occupant comfort, and moisture risk come together.

📅 Public Review: October 2 – November 16, 2026
📄 Standard: ASHRAE 198P
🔗 Review and submit comments through the ASHRAE Online Standards Review: https://osr.ashrae.org/

How are you verifying latent performance on DOAS units at part load—and what do you consider sufficient proof?

🏗️ Join Prasino Engineering at the AIA Illinois Annual Conference 2026!We’re excited to be part of this year’s AIA Illin...
10/05/2026

🏗️ Join Prasino Engineering at the AIA Illinois Annual Conference 2026!

We’re excited to be part of this year’s AIA Illinois Annual Conference in Champaign, IL!

Join George Karras of Prasino Engineering for an educational session:

📚 Decoding the 2024 IECC & ASHRAE 90.1-2022
📅 October 23, 2026
⏰ 1:45–2:45 PM
📍 iHotel & Illinois Conference Center | Champaign, IL

Whether you’re an architect, engineer, or building professional, this session will help you better understand the latest energy codes and what they mean for design and building performance.

Decode the codes. Design with confidence.

👉 Register here:
https://web.cvent.com/event/9e575592-a451-404e-a904-b47b90bd51eb/register?environment=P2

We look forward to seeing you there!

Outdoor Air Is Only as Clean as the Place You Pull It From.Outdoor air quality can change in minutes—and where we locate...
09/29/2026

Outdoor Air Is Only as Clean as the Place You Pull It From.

Outdoor air quality can change in minutes—and where we locate an outdoor air intake can directly affect what enters a building.

A recent NIOSH health hazard evaluation at a 600-bed Level I trauma hospital highlights why outdoor air intake location, exhaust entrainment, filtration, pressurization, and controls should be considered as part of commissioning and building performance—not simply maintenance.

The evaluation found that:

• Outdoor air intakes were located approximately 100–300 feet from the helipad
• Ultrafine particle counts increased within minutes of helicopter landings
• Gas-phase filtration was installed, but the airflow rate created a very short contact time for adsorption
• Loading dock doors remained open while air curtains were not operating
• NIOSH recommended computational fluid dynamics (CFD) modeling to evaluate potential changes to helipad or intake locations

What does this mean for commissioning?

✔️ Review outdoor air intake locations during design—not after construction
✔️ Evaluate exhaust and contaminant entrainment
✔️ Trend air quality at the intake, not only in occupied spaces
✔️ Functionally test door and air-curtain interlocks
✔️ Verify building pressurization under actual operating conditions
✔️ Confirm filtration performance against the actual airflow and required contact time

A filtration system can look right on paper and still underperform in the field.

Commissioning helps bridge that gap between design intent and actual building performance.

How many facilities are trending particle counts at the outdoor air intake—not just relying on occupied-space sensors?

📌 Source: NIOSH Health Hazard Evaluation Report 2025-0068-3436, Evaluation of Cancer Concerns Among Employees at a Hospital (August 2026).

ASHRAE & ACCA Standard 180: Full Revision Now Under Public ReviewMaintenance is not commissioning — but the quality of a...
09/28/2026

ASHRAE & ACCA Standard 180: Full Revision Now Under Public Review

Maintenance is not commissioning — but the quality of a maintenance program can have a direct impact on building performance.

ASHRAE and ACCA’s Standard 180, Standard Practice for Inspection and Maintenance of Commercial Building HVAC Systems, is currently undergoing a full revision, with the public review period open through October 5, 2026.

Why does this matter to commissioning and building performance professionals?

🔹 Maintenance tasks that are never clearly defined, scheduled, or verified can become recurring building performance issues.
🔹 Standard 180 provides owners with a reference point for what a comprehensive HVAC inspection and maintenance program should address.
🔹 Systems manuals and ongoing commissioning plans often rely on the same maintenance task definitions.
🔹 A full revision is an opportunity for professionals in the field to provide input before the standard is finalized.

When evaluating an existing building, some of the details we look at include:

• Filter and coil condition
• Damper and actuator operation
• Sensor calibration and drift
• Outdoor air minimum positions
• Overrides and manual commands left active after service

Public review period: August 21 – October 5, 2026

Professionals who work with existing buildings, HVAC systems, commissioning, and maintenance may find it valuable to review the proposed revision and provide comments through the ASHRAE Online Standards Review process.

🔗 ASHRAE Online Standards Review: https://osr.ashrae.org/default.aspx

If you perform EBCx or RCx, what maintenance task do you find missing most often when you walk an existing building?

🏢 Build It Right. Verify It. Perform Better.A building isn’t truly complete just because construction is finished. Its s...
09/21/2026

🏢 Build It Right. Verify It. Perform Better.

A building isn’t truly complete just because construction is finished. Its systems need to work together as intended.

At Prasino Engineering, commissioning helps verify that critical building systems are properly installed, tested, and performing as designed—from HVAC and electrical systems to controls and building envelope performance.

Our goal is simple: help identify issues early, improve building performance, and support better outcomes throughout the life of the building.

More than a report — onsite, on point, until completion.

🌐 prasinoeng.com

🏫 Better learning environments start with better-performing buildings.Students and staff spend much of their day inside ...
09/16/2026

🏫 Better learning environments start with better-performing buildings.

Students and staff spend much of their day inside school buildings, making HVAC performance an important part of maintaining comfort, indoor air quality, and reliable building operations.

Regular HVAC inspections and functional testing can help schools:

🌬️ Verify ventilation and airflow
🌡️ Maintain consistent temperatures
⚡ Identify energy waste
🔧 Catch equipment and controls issues early
🏫 Support a comfortable learning environment

A system that simply runs isn’t necessarily a system that performs as intended. Proper testing and verification can help facility teams identify issues before they become costly problems.

At Prasino Engineering, we help building owners and facility teams verify that critical building systems perform as intended.

More than a report — onsite, on point, until completion.

🌐 prasinoeng.com

Today, we pause to remember the lives lost on September 11, 2001, and honor the brave first responders, service members,...
09/11/2026

Today, we pause to remember the lives lost on September 11, 2001, and honor the brave first responders, service members, and everyday heroes who stepped forward in a time of unimaginable tragedy.

We remember the families who continue to carry their loved ones in their hearts, and we honor the strength, courage, and unity that followed.

We will never forget. 🇺🇸

⚡ Is Your Building Using More Energy Than It Should?High energy costs can be a symptom—not the root of the problem.Ineff...
09/08/2026

⚡ Is Your Building Using More Energy Than It Should?

High energy costs can be a symptom—not the root of the problem.

Inefficient equipment, poor controls, incorrect settings, air leaks, and systems running when they don’t need to can quietly drive up operating costs over time.

At Prasino Engineering, we help uncover the issues behind energy waste so building owners and facility teams can make smarter, more informed decisions.

Because energy efficiency isn’t just about using less energy.

It’s about making your building work better. 🌱

📩 Ready to take a closer look at your building’s energy performance? Let’s talk.

🌐 www.prasinoeng.com

🏢 Your building is always telling you something. The question is—are you listening?Unusual temperature changes, rising e...
09/01/2026

🏢 Your building is always telling you something. The question is—are you listening?

Unusual temperature changes, rising energy use, equipment cycling too often, moisture, or systems that just don’t seem to perform as they should can all be clues to a bigger issue.

At Prasino Engineering, we go beyond the symptoms. We investigate how building systems actually perform in the field, connect the dots, and help uncover the root cause—so you can make smarter decisions with confidence.

Because good engineering isn’t about guessing what went wrong.
It’s about finding out why.

🔍 Listen to your building. Understand its performance. Protect your investment.

🌐 prasinoeng.com

Address

747 E Boughton Road
Bolingbrook, IL
60440

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+16308004579

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