Cobalt Creed

Modular construction moves fast. HVAC systems should too.

Traditional ductwork often creates problems modular builders know too well — oversized runs, difficult routing, longer installation timelines, and coordination issues once modules arrive on site.

Small Duct High Velocity systems solve those problems differently.

A flat plenum designed to fit between stacked modules.
2-inch supply tubing that works inside tight cavities traditional duct cannot reach.
90–95% factory-installed before the module ships.
Final on-site connections completed in hours instead of days.
One scalable HVAC approach across single-family, multifamily, workforce housing, and modular developments.

This is why more modular builders are moving toward SDHV systems built around the realities of off-site construction.

Smaller duct. Same comfort. Built for the way modular actually builds.

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Smaller ductwork is not just about saving space. It is about delivering more of the conditioned air where it is actually needed. Traditional metal duct systems can lose up to 25% of conditioned air through leakage before it even reaches the occupied space. Small Duct High Velocity systems lose less than 5%.

Less leakage means better airflow delivery, more consistent comfort, improved efficiency, and less wasted energy throughout the system.
Smaller duct. Less loss. Better delivered comfort. That is the difference efficient HVAC design makes in modular, multifamily, workforce housing, and high-performance builds.

What duct leakage specifications are you seeing on your current projects?

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In modular and tight-cavity construction, the biggest HVAC limitation is often not the equipment — it is the space available to install it.

That is why cavity dimensions should be one of the first things evaluated before HVAC decisions are made.

Three things builders should pay attention to:

Measure the tightest cavity first.
If the available space is under 6 inches, traditional ductwork quickly becomes a challenge.
Ask about interstitial installation.
Small Duct High Velocity systems use flat plenums designed to fit within tight structural spaces where standard duct systems cannot.
Focus on airflow specifications, not just tonnage.
In tight-cavity applications, CFM per outlet matters more than oversized equipment.

Good HVAC design is not just about capacity. It is about fitting performance into the realities of the build.

What is the tightest cavity space you have ever had to design HVAC around?

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Most HVAC decisions are made after equipment selection.

The better approach is asking the right performance questions before the system is specified.

How much conditioned air is actually being lost through leakage?
What airflow velocity is being delivered into the space?
How consistent is the room temperature from wall to wall?
How effectively is humidity being removed?
And how quiet is the system once the space is occupied?

These are not small details. They directly affect comfort, efficiency, operating cost, and long-term building performance.

Small Duct High Velocity systems are engineered around measurable performance:
• Under 5% duct leakage
• 1,000–2,000 FPM outlet velocity for aspiration
• Less than 2°F temperature variation
• Up to 30% greater humidity removal
• Operating sound levels under 30 dB

Five questions. One spec sheet. Better builds.

Which of these specs is the one nobody on your team asks about, but should?

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Traditional HVAC duct: up to 30 inches wide.
SDHV supply tubing: 2 inches.

Same comfort. Better air quality. 30% less energy. No soffits. No dropped ceilings. No compromises.

The duct size is not the only thing that changed. The whole system logic changed.

High-velocity delivery means even temperature distribution, continuous air circulation, and MERV 14 filtration built into the same compact package.

If you are specifying HVAC for a high-performance build, this is the conversation worth having.

Full breakdown at the link in comments.

https://cobaltcreed.com/revolutionizing-high-performance-homes-with-small-duct-high-velocity-hvac-systems/

Revolutionizing High-Performance Homes with Small Duct High Velocity HVAC Systems - Cobalt Creed In the world of modern home construction, where energy efficiency and indoor comfort are non-negotiable, traditional HVAC systems often fall short. Enter

"Does my contractor need special training to install your system?"

It’s the question we get before almost every first project. The answer is simple: No.

No specialist trades. No mandatory certifications. No extra hoops.

Here is how it actually works:
Cobalt creed joins your preferred contractor on-site for the first installation. We walk through every component, every connection, and every step of the process—until your team is 100% confident.

By the second project, most crews are fully self-sufficient.

Full support. Practical training. Builder confidence. Better outcomes on every project.

That is what HVAC installation done right looks like.

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Traditional ductwork was never designed for modular construction.

That’s why more builders, developers, and prefab manufacturers are moving toward Small Duct High Velocity (SDHV) HVAC systems for factory-built housing.

Here are 5 reasons SDHV works so well in modular and offsite construction:

✔ Smaller duct footprint for tight framing cavities
✔ Easier HVAC coordination during design and fabrication
✔ Faster factory installation workflows
✔ Reduced on-site HVAC labor requirements
✔ Cleaner architectural integration without bulky soffits

For modular builders, HVAC planning is no longer just a mechanical decision.

It’s a construction efficiency decision.

Cobalt Creed works directly with builders and project teams to support:
• SDHV system design
• Manual J / D / S load calculations
• Modular HVAC integration
• Mechanical coordination
• Factory-built housing workflows
• Unico System implementation

The earlier HVAC gets coordinated, the smoother the project moves.

Visit our website www.cobaltcreed.com or send your floor plan to discuss SDHV integration support.