The Unico System is Quieter than Traditional and Mini-Spilt Systems
- Audree Grubesic
- Nov 20
- 3 min read
Updated: Nov 25
When choosing a heating and cooling system, noise levels are often overlooked, but they make a big difference in comfort, especially in modular homes and smaller spaces. The Unico System, known for its small-duct, high-velocity design, is one of the quietest options available today.
Sound levels are measured in decibels (dB), and every 10 dB increase sounds about twice as loud to the human ear. For reference, a whisper or quiet library measures around 20 to 30 dB, normal conversation is about 40 to 50 dB, and a dishwasher or vacuum typically runs between 60 and 75 dB. The Unico System typically operates under 30 dB when installed correctly, comparable to a soft whisper. In contrast, most mini-splits systems run between 19 and 35 dB on low speed and up to 49 dB on high, while traditional ducted systems often produce between 50 and 75 dB indoors and outdoors.
Several engineering features make The Unico System quieter than most HVAC systems. The air handler is wrapped in sound-insulated material that blocks motor and blower noise. Its flexible, insulated tubing absorbs airflow sound much better than rigid metal ducts. Air is delivered through small, carefully placed outlets that provide balanced airflow without the harsh drafts or “whistle” that can occur with traditional systems. And because installation precision matters, following Unico’s recommended run lengths and using properly installed sound attenuators ensures consistent, quiet operation.
For modular and factory-built homes, where living spaces are close together and mechanical rooms are often in the living space, quiet performance makes a noticeable difference. A system that runs below 30 dB helps reduce the need for extra soundproofing and creates a calm, comfortable indoor environment. While mini-splits can also operate quietly, The Unico System keeps all the components concealed, avoiding bulky wall units and preserving interior design aesthetics.
You can see and hear the difference for yourself in this short demonstration video: Watch on YouTube.
The Unico System delivers whisper-quiet comfort, often below 30 dB, making it significantly quieter than most traditional HVAC systems and comparable to top-performing mini-splits. For modular manufacturers and homeowners who value both performance and peace, The Unico System offers an efficient and nearly silent solution.
Q1: How quiet is The Unico System compared to other HVAC options?
A: When installed correctly, The Unico System typically operates under 30 dB—about the level of a soft whisper. By comparison, many mini-splits run ~19–35 dB on low and up to ~49 dB on high, while traditional ducted systems often produce ~50–75 dB indoors/outdoors.
Q2: What design features make it so quiet?
A: The air handler is wrapped in sound-insulated material; flexible, insulated small-duct tubing absorbs airflow noise better than rigid metal ducts; small, well-placed outlets smooth airflow to avoid “whistle” or drafts; and following recommended run lengths with properly installed sound attenuators keeps operation consistently quiet.
Q3: Why is it a strong fit for modular or factory-built homes?
A: Living spaces are close together and mechanical areas are often nearby, so sub-30 dB operation noticeably improves comfort and reduces the need for extra soundproofing. Components are concealed (no bulky wall cassettes), preserving interior aesthetics while delivering even, quiet airflow.
FAQ's
How quiet is The Unico System compared to other HVAC options? The Unico System typically operates under 30 dB—about the level of a soft whisper. This is significantly quieter than traditional ducted systems (which often produce 50–75 dB) and comparable to the quietest mini-split systems on their low setting.
What specific design features make The Unico System a low-noise option? The system uses a sound-insulated air handler, and its flexible, insulated small-duct tubing absorbs airflow noise much better than rigid metal ducts, preventing the drafts or "whistle" sound.
Why is quiet HVAC performance especially important for modular or factory-built homes? In modular homes, living spaces are often close together and mechanical rooms may be near living areas. Sub-30 dB operation improves comfort, reduces the need for extra soundproofing, and keeps components concealed to preserve interior aesthetics.
What is the decibel (dB) level difference between a whisper and a typical traditional HVAC system? A whisper or quiet library measures around 20 to 30 dB. A traditional ducted system often operates between 50 and 75 dB, meaning it can be perceived as significantly louder to the human ear.
How is installation precision related to the system's quiet operation? Following the manufacturer's recommended duct run lengths and using properly installed sound attenuators are crucial engineering steps that ensure consistent, quiet operation and prevent potential airflow noise.
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