Building with Ducts Inside: Why Unico Is the Best Option for Modular Homes

Published by Audree Grubesic on Jun 19, 2025. Updated Jun 21, 2025.

Main claim

The article argues that The Unico System is a strong HVAC option for modular homes because it keeps ductwork inside the conditioned envelope and fits tight modular floorplans.

Why it is presented as better than ductless systems

• Ductless systems place wall-mounted indoor units in visible areas.
• The article says those units can disrupt interior finishes and floor plans.
• The Unico System is described as a near-invisible alternative.

Key technical points

• Unico ducts are said to be 2 inches in diameter.
• The article says this is roughly 33% the size of traditional ductwork.
• Traditional ductwork is described as typically 6 inches in diameter.
• The system can be routed through wall cavities, floor joists, and central corridors.
• The system is described as able to deliver up to 9 tons of conditioned air.

Benefits for modular construction

• Cleaner installs.
• Faster production.
• Better protection than ducts placed in attics or crawl spaces.
• More flexibility for structural, plumbing, and electrical components.
• Better control and visibility during final assembly and maintenance.

Comfort features described

• Each supply tube is insulated and has an outer vapor barrier.
• The system uses aspiration to mix room air with conditioned air.
• The article says this creates quiet, draft-free comfort.
• The temperature profile is described as even across the home.

Planning support

The article says Unico has a dedicated modular team that works with floorplans to determine sizing, layout, and duct count per room.

Other note

The article says some utility companies offer efficiency credits for systems that improve thermal performance.