Low Velocity Systems
Low Velocity Sizing Request
Low-velocity systems operate at reduced fan speeds, delivering whisper-quiet comfort without sacrificing performance. They're ideal for luxury residential spaces, offices, recording studios, and any application where noise is a critical factor. Zone control lets each area be managed independently for maximum efficiency.
Estimate your load
This works the way a Manual J does: it measures the actual surfaces losing and gaining heat rather than multiplying square footage by a rule of thumb. That matters most in apartments, where shared walls carry almost no load.
IECC climate zone
Enter a ZIP to set design temperatures
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Zone 1 is hottest, 8 coldest. New York City is Zone 4A, which the NYC Energy Code requires for all city projects. Heating varies enormously by climate; cooling much less, because outdoor cooling design temperatures sit within a narrow band nationwide.
This is an estimate to start the conversation. It follows the structure of an ACCA Manual J, using real U-values, design temperatures and infiltration rates, but it assumes a roughly square footprint and average window sizes and does not do per-window orientation or a measured blower-door test. A stamped Manual J is a different thing. Airflow follows conventional design practice. We supply equipment and handle delivery; your contractor installs it.
Low Velocity Sizing Request
Submit your project details for a custom low-velocity HVAC system sizing quote. Include zone and ductwork information for the most accurate sizing.
Prefer to talk directly? Call us at (385) 319-1559